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Pima Co., Arizona, USAi
Regional Level Types
Pima Co.County
ArizonaState
USACountry

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Key
Locality type:
Largest Settlements:
PlacePopulation
Tucson531,641 (2017)
Casas Adobes66,795 (2011)
Catalina Foothills50,796 (2011)
Oro Valley43,565 (2017)
Marana41,315 (2017)
Drexel Heights27,749 (2011)
Other Languages:
French:
Comté de Pima, Arizona, États-Unis
German:
Pima County, Arizona, Vereinigte Staaten
Italian:
Contea di Pima, Arizona, Stati Uniti d'America
Russian:
Пима, Аризона, Соединённые Штаты Америки
Simplified Chinese:
皮马县, 亞利桑那州, 美国
Spanish:
Condado de Pima, Arizona, Estados Unidos
Albanian:
Pima County, Arizona, Shtetet e Bashkuara të Amerikës
Amharic:
ፒማ ካውንቲ፥ አሪዞና, አሪዞና, አሜሪካ
Arabic:
مقاطعة بيما, أريزونا, الولايات المتحدة
Armenian:
Պիմա շրջան, Արիզոնա, Ամերիկայի Միացյալ Նահանգներ
Basque:
Pima konderria, Arizona
Bavarian:
Pima County, Arizona, Vaoanigte Stootn
Bishnupriya Manipuri:
প্রিমা কাউন্টি, অ্যারিজোনা, তিলপারাষ্ট্র
Bulgarian:
Пима, Аризона, Съединени американски щати
Cebuano:
Pima County, Arizona (estado)
Croatian:
Pima, Arizona, Sjedinjene Američke Države
Czech:
Pima County, Arizona, Spojené státy americké
Danish:
Pima County, Arizona, USA
Dutch:
Pima County, Arizona (staat), Verenigde Staten
Estonian:
Pima maakond, Arizona, Ameerika Ühendriigid
Farsi/Persian:
شهرستان پیما، آریزونا, آریزونا, ایالات متحده آمریکا
Finnish:
Piman piirikunta, Arizona, Yhdysvallat
Hungarian:
Pima megye, Arizona, Amerikai Egyesült Államok
Irish Gaelic:
Contae Pima, Arizona, Stáit Aontaithe Mheiriceá
Japanese:
ピマ郡, アリゾナ州, アメリカ合衆国
Judaeo-Spanish:
Pima, Arizona, Estados Unidos de Amerika
Korean:
피머 군, 애리조나주, 미국
Limburgian:
Pima County, Arizona, Vereinegde Staote vaan Amerika
Low Saxon/Low German:
Pima County, Arizona, USA
Malayalam:
പിമ കൗണ്ടി, അരിസോണ
Min Dong Chinese:
Pima Gông, Arizona
Norwegian:
Pima County, Arizona, USA
Polish:
Hrabstwo Pima, Arizona, Stany Zjednoczone
Portuguese:
Condado de Pima, Arizona, Estados Unidos
Romanian:
Comitatul Pima, Arizona, Statele Unite ale Americii
Serbian:
Округ Пима, Аризона, Сједињене Америчке Државе
Serbo-Croatian:
Pima County, Arizona, Sjedinjene Američke Države
Swedish:
Pima County, Arizona, USA
Turkish:
Pima Kontluğu, Arizona, Amerika Birleşik Devletleri
Ukrainian:
Піма, Аризона, Сполучені Штати Америки
Urdu:
پیما کاؤنٹی، ایریزونا, ایریزونا, ریاستہائے متحدہ امریکا
Vietnamese:
Quận Pima, Arizona, Chủng Quốc Hoa Kỳ
Waray:
Condado han Pima, Arizona, Estados Unidos
Western Punjabi:
پیما کاؤنٹی, ایریزونا, امریکہ


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Standard Detailed Gallery Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

246 valid minerals. 4 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Acanthite
Formula: Ag2S
Localities: Reported from at least 19 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 102 (Table 4); Arizona Bureau of Mines file data.
Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22OH2
Localities: Reported from at least 12 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 133 (Table 4); Ransome (1922): 425-426; Cummings & Romslo (1950); Arizona Bureau of Mines file data.
Adamite
Formula: Zn2(AsO4)(OH)
Reference: In collection of Tom Trebisky.
Adamite var. Copper-bearing Adamite
Formula: (Zn,Cu)2AsO4OH
Reference: Collected in 1980 by Bruce J. Murphy. Analysis by Bart Cannon 2009
Aegirine
Formula: NaFe3+Si2O6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 102; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Aerinite
Formula: (Ca5.1Na0.5)(Fe3+,Al,Fe2+,Mg)4(Al,Mg)6[HSi12O36(OH)12][(CO3)1.2(H2O)12]
Reference: Handbook of Mineralogy
Aikinite
Formula: PbCuBiS3
Description: Occurs in small quantities.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 103; Galbraith, F.W. (1947), AZ Bur. Mines Bull. 153: 28.
Ajoite (TL)
Formula: (K,Na)Cu7AlSi9O24(OH)6 · 3H2O
Habit: Tufts of acicular crystals
Colour: pale aquamarine
Description: Fills interstices of radiating spherulitic crystalline shattuckite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 316, 319-320; Schaller, W.T. & A.C. Vlisidis (1958), Ajoite, a new hydrous aluminum copper silicate, Am.Min.: 43: 1107-1111; Hutton, C.O. & A.C. Vlisidis (1960), Papagoite, a new copper-bearing mineral from Ajo, AZ, Am.Min.: 45: 599-611; Sun, M.S. (1961), Differential analysis of shattuckite, Am.Min.: 46: 67-77; Newberg, D.W. (1964), X-ray study of shattuckite, Am.Min.: 49: 1234-1239; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Clark, 1993 - "Hey's Mineral Index, 3rd Edition"; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 111.
Albite
Formula: Na(AlSi3O8)
Description: Secondary product of alteration of anorthite component of plagioclase, along with sericite and epidote.
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 93.
Albite var. Andesine
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Description: Forms a later groundmass of the spessartite.
Reference: Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mountains, Pima Co., AZ, AZ Geol. Soc. Digest: 3: 47.
Albite var. Oligoclase
Formula: (Na,Ca)[Al(Si,Al)Si2O8]
Reference: Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mountains, Pima Co., AZ, AZ Geol. Soc. Digest: 3: 47.
'Albite-Anorthite Series'
Description: Rock forming minerals - wide range of compositions. Primary plagioclase of both the Concentrator volcanics & Cornelia quartz monzonite is largely andesine, although some zoned crystals show oligoclase rims.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 93.
Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Description: Occurs in black sands over an area of several miles across.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 104; Adams, J.W. & M.H. Staatz (1969), Rare earths and thorium, in Mineral and water resources of AZ, AZ Bur. of Mines Bull. 180: 245-251.
'Allanite Group'
Formula: {A12+REE3+}{M3+2M32+}(Si2O7)(SiO4)O(OH)
Description: Rock forming minerals
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Almandine
Formula: Fe2+3Al2(SiO4)3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed. 106, 205, 240.
Alunite
Formula: KAl3(SO4)2(OH)6
Localities: Reported from at least 7 localities in this region.
Description: Occurs in numerous narrow veins cutting Concentrator volcanics.
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 84 (Table 4); Arizona Bureau of Mines file data.
Analcime
Formula: Na(AlSi2O6) · H2O
Description: Occurs in micro-cavities in amygdaloidal basalts.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 109; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 103;Tschernich, R. (1992): Zeolites of the World, 64
Anatase
Formula: TiO2
Description: Rock forming minerals
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Anauxite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 266
Andalusite
Formula: Al2(SiO4)O
Description: Occurs in Cardigan Gneiss.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 110; Gilluly, J. (1937), Geology and ore deposits of the Ajo quadrangle, AZ, AZ Bur. of Mines Bull. 141.
Andradite
Formula: Ca3Fe3+2(SiO4)3
Localities: Reported from at least 9 localities in this region.
Anglesite
Formula: PbSO4
Localities: Reported from at least 28 localities in this region.
Description: Supergene mineral.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 229; Guild, F.N. (1917), A microscopic study of the silver ores and their associated minerals, Econ.Geol.: 12: 297-353;
Anhydrite
Formula: CaSO4
Localities: Reported from at least 7 localities in this region.
Reference: No reference listed
Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
Colour: White, buff (weathered)
Description: Much more common than relatively pure dolomite. Occurs in veins or as druses coated by calcite. Curved faces, weathers buff.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 114; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 91-92.
Anorthite
Formula: Ca(Al2Si2O8)
Localities: Reported from at least 6 localities in this region.
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Description: Plagioclase in the andesine-labradorite range. Phenocrysts to 2 inches in intrusive & flow porphyritic rocks, locally termed 'Turkey Track' porphyry.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 329-330; Cooper, J.R. (1961), Turkey-track porphyry - A possible guide for correlation of iocene rocks in southeastern AZ, AZ Geol. Soc. Digest: 4: 17-35.
Anthophyllite
Formula: ◻{Mg2}{Mg5}(Si8O22)(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 115.
Antigorite
Formula: Mg3(Si2O5)(OH)4
Reference: MRDS database Dep. ID file #10103756, MRDS ID #M050530.
Antimony
Formula: Sb
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 138.
Antlerite
Formula: Cu3(SO4)(OH)4
Reference: Rob Lavinsky
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Localities: Reported from at least 6 localities in this region.
Description: Minor amounts in altered rock.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 117; Hutton, C.O. & A.C. Vlisidis (1960), Papagoite, a new copper-bearing mineral from Ajo, AZ, Am.Min.: 45: 599-611.
'Apophyllite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 268; Anthony, J.W. & R.B. Laughton (1970), Kinoite, A new hydrous copper calcium silicate mineral from Arizona, Am.Min.: 55: 709-713..
Aragonite
Formula: CaCO3
Localities: Reported from at least 8 localities in this region.
Description: Occurs as large fibrous and stalactitic masses.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 49; Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 117 (Table 4); Schrader (1915): 149; Arizona Bureau of Mines file data.
'Asbestos'
Reference: MRDS database Dep. ID file #10210709, MAS ID #0040190377.
Atacamite
Formula: Cu2(OH)3Cl
Localities: Reported from at least 8 localities in this region.
Reference: Rolf Luetcke
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Description: Rock forming minerals
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298..
Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Localities: Reported from at least 15 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123, 308, 331; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 53.
Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Reference: Granger, H.C. & R.B. Raup (1962), Recon. Study of uranium deposits in AZ, USGS Bull. 1147A: A36.
Axinite-(Mn)
Formula: Ca2Mn2+Al2BSi4O15(OH)
Habit: Plates
Colour: Yellow
Description: Occurs in vesicles in andesite flow boulders being replaced by withamite variety of clinozoisite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 179, 288; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Azurite
Formula: Cu3(CO3)2(OH)2
Localities: Reported from at least 67 localities in this region.
Habit: Blocky, tabular, terminated
Colour: Azure-blue
Fluorescence: None
Description: Exceptionally sharp crystals common in gossan cavities and fissures.
Reference: [www.johnbetts-fineminerals.com]
Baryte
Formula: BaSO4
Localities: Reported from at least 67 localities in this region.
Habit: Rosette-shaped aggregates to 15 cm
Colour: Pink
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 128; Shannon, D.M. (1981), What's new in minerals, Min.Rec.: 12: 117-118.; Shannon, M. (1981): Weldon mine Barite. Mineralogical Record 12, 118
Bassanite
Formula: Ca(SO4) · 0.5H2O
Habit: Tiny, sub-hedral, fibrous crystals
Description: Occurs in veinlets filled with quartz in hydrothermally altered diorite and quartz diorite porphyry.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 130.
Bayldonite
Formula: PbCu3(AsO4)2(OH)2
Reference: No reference listed
Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Description: Pseudomorphic replacements of plagioclase phenocrysts in outlying parts of mineralized area. Occurs also in zone of oxidation coating malachite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 132; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 96; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Beryl
Formula: Be3Al2(Si6O18)
Localities: Reported from at least 6 localities in this region.
Description: Occurs in a vein in granite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 134; Staatz, M.H., et al (1965), Differences in the minor element composition of beryl in various environments, Am.Min.: 50:1783.
Beudantite
Formula: PbFe3(AsO4)(SO4)(OH)6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 135.
Bieberite
Formula: CoSO4 · 7H2O
Colour: Pink
Description: Efflorescences on side of ditch draining approach to the pit.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 98.
'Bindheimite'
Formula: Pb2Sb2O6O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 130, 136.
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2
Localities: Reported from at least 14 localities in this region.
Description: Rock forming mineral. Occurs in the Cardigan gneiss, Concentrator volcanics, and Cornelia quartz monzonite. A little broadleaved material associated with pegmatized part of the Cornelia quartz monzonite in the orebody.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Bisbeeite'
Formula: (Cu,Mg)SiO3 · nH2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 137.
Bismuth
Formula: Bi
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 138; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. Mines Bull. 153: 12.
Bismuthinite
Formula: Bi2S3
Reference: MRDS database Dep. ID file #10096063, MRDS IDC #TC38463.
Bismutite
Formula: (BiO)2CO3
Reference: MRDS database Dep. ID file #10096063, MRDS IDC #TC38463.
Bornite
Formula: Cu5FeS4
Localities: Reported from at least 53 localities in this region.
Reference: MRDS database Dep. ID file #10039689, MRDS ID #M050656.
Bornite var. Silver-bearing Bornite
Formula: (Cu,Ag)5FeS4
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 136 (Table 4); Ransome (1922): 423-424; Wilson, E.D., et al (1950), Arizona zinc and lead deposits, part I, AZ Bur. Mines Bull. 156: 48; Arizona Bureau of Mines file data.
Bournonite
Formula: PbCuSbS3
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 125 (Table 4); Arizona Bureau of Mines file data.
Braunite
Formula: Mn2+Mn3+6(SiO4)O8
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 145; Havens, R., et al (1954), Beneficiation of oxide manganese and manganese-silver ores from southern AZ, US Bur. of Mines Rept. Inv. 5024.
Brezinaite (TL)
Formula: Cr3S4
Type Locality:
Description: Occurs in iron meteorite as tiny (5-80 micron) anhedral grains in metal matrix & contiguous to silicate inclusions.
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.; Anthony, J.W., Williams, S.A., Wilson, W.E., Grant, R.W. (1995) Mineralogy of Arizona. University of Arizona Press. 3rd edition: 508 pgs (145).
Brochantite
Formula: Cu4(SO4)(OH)6
Localities: Reported from at least 15 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 146.
Brookite
Formula: TiO2
Habit: Minute, less than 0.01 mm diameter
Description: Rock forming mineral. Replacing titanite in a single sample from a drill core in quartz monzonite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 91.
Buttgenbachite
Formula: Cu19(NO3)2(OH)32Cl4 · 2H2O
Description: Product of oxidation of sulfide ores. Occurs in quartz veins cutting andesite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 149; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
Description: Occurs coating torbernite with turquoise.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 399.
Calcite
Formula: CaCO3
Localities: Reported from at least 133 localities in this region.
Reference: No reference listed
Calcite var. Limestone Onyx
Formula: CaCO3
Colour: Brown
Description: Occurs as brown travertine.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 152; Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 47.
Calcite var. Manganese-bearing Calcite
Formula: (Ca,Mn)CO3
Reference: MRDS database Dep. ID file #10039916, MRDS ID #M051101.
Caledonite
Formula: Pb5Cu2(SO4)3(CO3)(OH)6
Habit: Single anhedra to 25 mm diameter
Description: Occurs surrounded by cerussite altering to malachite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 153; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Carminite
Formula: PbFe3+2(AsO4)2(OH)2
Reference: In collection of Tom Trebisky.
Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 155.
Cerussite
Formula: PbCO3
Localities: Reported from at least 52 localities in this region.
Reference: No reference listed
'Chabazite'
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Chalcanthite
Formula: CuSO4 · 5H2O
Localities: Reported from at least 9 localities in this region.
Reference: Creasey, S.C. & G.L. Quick (1955), Copper deposits of part of Helvetia mining district, Pima Co., AZ, USGS Bull. 1027-F: 314-315.
Chalcocite
Formula: Cu2S
Localities: Reported from at least 104 localities in this region.
Description: Relatively small amounts; disseminated in narrow band bordering the southern part of the orebody.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 163; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 87-88; Joralemon, I.B. (1914), The Ajo copper district, AZ, Engr. Mining Jour.: 98: 663; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. Mines Bull. 153: 16.
Chalcocite var. Silver-bearing Chalcocite
Formula: (Cu,Ag)2S
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 132 (Table 4).
Chalcopyrite
Formula: CuFeS2
Localities: Reported from at least 232 localities in this region.
Reference: Univ. AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 29.; Copper Handbook 1911
Chamosite
Formula: (Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)8
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Chlorargyrite
Formula: AgCl
Localities: Reported from at least 33 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 102 (Table 4); Arizona Bureau of Mines file data.
'Chlorite Group'
Localities: Reported from at least 42 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 125 (Table 4); Arizona Bureau of Mines file data.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Localities: Reported from at least 79 localities in this region.
Reference: Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107, 326.
Cinnabar
Formula: HgS
Localities: Reported from at least 9 localities in this region.
Description: Traces.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 114 (Table 4); Arizona Bureau of Mines file data.
'Clays'
Localities: Reported from at least 15 localities in this region.
Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Clinochlore var. Diabantite
Formula: (Mg,Fe,Al)6((Si,Al)4O10)(OH)8
Description: In Cornelia quartz monzonite.
Reference: Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 95.
'Clinoptilolite'
Formula: M3-6(Si30Al6)O72 · 20H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 178.
Clinozoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Description: Occurs as vesicle fillings in andesite flow boulders. Variety withamite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 179; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Cobaltite
Formula: CoAsS
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 180; Galbraith, F. W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 23.
Columbite-(Fe)
Formula: Fe2+Nb2O6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 221.
Conichalcite
Formula: CaCu(AsO4)(OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183; Schaller, W.T. & A.C. Vlisidis (1958), Ajoite, a new hydrous aluminum copper silicate, Am.Min.: 43: 1107-1111; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 70.
Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
Description: Occurs in vugs with cuprite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298;
Copiapite
Formula: Fe2+Fe3+4(SO4)6(OH)2 · 20H2O
Description: Silky fibers & foliated masses.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 184.
Copper
Formula: Cu
Localities: Reported from at least 24 localities in this region.
Description: Abundant as an oxidation product.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185; Schwartz, G.M. (1934), Paragenesis of the oxidized ores of copper, Econ.Geol.: 29: 55-75; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 87; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Copper Stain'
Localities: Reported from at least 136 localities in this region.
Reference: MRDS database Dep. ID file #10039853, MRDS ID #M050934.
Coquimbite
Formula: AlFe3(SO4)6(H2O)12 · 6H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 186.
Cornetite
Formula: Cu3(PO4)(OH)3
Colour: Light peacock-blue; deep blue, deep greenish-blue
Description: Well-crystallized, fine-grained, soft clusters plastering fracture surfaces in chert or chert gangue; as clear crystal aggregates & darker crystalline clots.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 121, 146, 187, 277; Khin, B.S. (1970), Cornetite from SAginaw Hill, AZ, Min.Rec.: 1: 117-118.
Covellite
Formula: CuS
Localities: Reported from at least 23 localities in this region.
Description: Occurs as minute blebs in chalcocite veinlets and coatings on other copper minerals, especially chalcopyrite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 190; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 88; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Cristobalite
Formula: SiO2
Description: Occurs in cavities in andesite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 192, 402; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 86, 108.
Crocoite
Formula: PbCr6+O4
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 194; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Cubanite
Formula: CuFe2S3
Reference: MRDS database Dep. ID file #10111429, MRDS ID #M050387.
Cuprite
Formula: Cu2O
Localities: Reported from at least 44 localities in this region.
Description: Abundant; miners made baseballs from chalcotrichite. Occurs with supergene hematite, malachite, chrysocolla and copper in the old weathered zone of the orebody that lies beneath the Locomotive fanglomerate
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183, 196; Schwartz, G.M. (1934), Paragenesis of the oxidized ores of copper, Econ.Geol.: 29: 55-75; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89.
Cuprite var. Chalcotrichite
Formula: Cu2O
Description: Abundant; miners made baseballs out of this material.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 196; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81.
Cuprorivaite
Formula: CaCuSi4O10
Description: On a brick from the smelter.
Reference: American Mineralogist 47:409-411
Cuprotungstite
Formula: Cu2(WO4)(OH)2
Reference: Collected personally; Cuprotungstite - knowledge among local collectors
Datolite
Formula: CaB(SiO4)(OH)
Description: Occurs in thin veins in diopside-garnet tactites as micro-material.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199.
'Davidite'
Description: Occurs as dark, pitchy-lustered masses in a matrix of feldspar and titanite.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 35.
Davidite-(La)
Formula: La(Y,U)Fe2(Ti,Fe,Cr,V)18(O,OH,F)38
Colour: Dark brown
Description: Pitchy-lustered masses in matrix; nearly entirely metamict.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199; Pabst, A. & R.W. Thomssen (1959), Davidite from the Quijotoa Mountains, Pima Co., AZ (abstract), Geol.Soc.Amer. Bull.: 70: 1739; Pabst, A. (1961), X-ray crystallography of davidite, Am.Min.: 46: 700-718.; Bryan M. Gatehouse, Ian E. Grey and Patrick R. Kelly (1979) The crystal structure of davidite. American Mineralogist 64:1010-1017
Descloizite
Formula: PbZn(VO4)(OH)
Habit: Rare crystals to 5mm long
Colour: Brownish-orange
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 201; Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107.
Devilline
Formula: CaCu4(SO4)2(OH)6 · 3H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 202.
Devilline var. Zinc-bearing Devilline
Formula: Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O
Description: Occurs in quartz veins cutting andesite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 202; Williams, S.A. (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Diaspore
Formula: AlO(OH)
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Digenite
Formula: Cu9S5
Reference: Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 204.
Diopside
Formula: CaMgSi2O6
Localities: Reported from at least 17 localities in this region.
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Dioptase
Formula: CuSiO3 · H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 205.
Djurleite
Formula: Cu31S16
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 268; Anthony, J.W. & R.B. Laughton (1970), Kinoite, A new hydrous copper calcium silicate mineral from Arizona, Am.Min.: 55: 709-713..
Dolomite
Formula: CaMg(CO3)2
Localities: Reported from at least 13 localities in this region.
Description: A little found in ores as linings in drusy cavities. Older than calcite & coats chlorite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 91-92.
Dolomite var. Zinc-bearing Dolomite
Formula: Ca(Mg,Zn)(CO3)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 202; Williams, S.A. (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Duftite
Formula: PbCu(AsO4)(OH)
Reference: Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 208.
Dyscrasite
Formula: Ag3Sb
Description: A secondary mineral in quartz diorite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 210; Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, AZ, Econ.Geol.: 12: 237-269.
Enargite
Formula: Cu3AsS4
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Enstatite
Formula: Mg2Si2O6
Reference: t: Bunch, T.E. and L.H. Fuchs (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. Amer. Mineral., 54, 1509–1518.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 94 localities in this region.
Description: With specularite in extreme NW corner of the orebody, coats specularite in vugs. Secondary alteration product of anorthite component of plagioclase along with sericite and albite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 90, 93, 94.
Epsomite
Formula: MgSO4 · 7H2O
Description: Occurs in the oxidized portion of the orebody; possible post-mining product.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 216; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89, 98; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81.
'Erionite'
Formula: M2[Al4Si14O36] · 15H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 216.
Erionite-Ca
Formula: (Ca,K2,Na2)2[Al4Si14O36] · 15H2O
Reference: O. Dzillas
Euxenite-(Y)
Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 218; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 41
'Feldspar Group'
Localities: Reported from at least 6 localities in this region.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 35.
'Ferrierite'
Description: Occurs is a dike with calcite and zeolites.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 220; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Ferrierite-Na
Formula: (Na,K)5(Si31Al5)O72 · 18H2O
Reference: azminerals.com
Ferrimolybdite
Formula: Fe2(MoO4)3 · nH2O
Localities: Reported from at least 6 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 220.
Fluorapatite
Formula: Ca5(PO4)3F
Habit: Commonly euhedral and stumpy
Description: Rock forming mineral. Occurs only as an accessory mineral in igneous rocks, including the Cornelia quartz monzonite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 97.
Fluorite
Formula: CaF2
Localities: Reported from at least 33 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 105 (Table 4); Dale, et al (1960): 102-104; Arizona Bureau of Mines file data.
Fornacite
Formula: Pb2Cu(CrO4)(AsO4)(OH)
Description: Occurs on hematite and quartz.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 225; Bideaux, R.A., et al (1960), Some new occurrences of minerals of AZ, AZ Geol. Soc. Digest: 3: 53-56; Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107.
Forsterite
Formula: Mg2SiO4
Description: Rock forming mineral.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Freibergite Subgroup'
Formula: ([Ag6]4+,((Cu,Ag)4 C2+2)Sb4S12S0-1
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 114 (Table 4); Arizona Bureau of Mines file data.
Gadolinite-(Y)
Formula: Y2Fe2+Be2Si2O10
Description: Occurs in biotite gneiss.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 227, 427; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Galena
Formula: PbS
Localities: Reported from at least 160 localities in this region.
Reference: No reference listed
Galena var. Silver-bearing Galena
Formula: PbS with Ag
Localities: Reported from at least 28 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 103 (Table 4); Arizona Bureau of Mines file data.
'Garnet Group'
Formula: X3Z2(SiO4)3
Localities: Reported from at least 64 localities in this region.
Reference: C. Lemanski, Jr. - self collected.
Gerhardtite
Formula: Cu2(NO3)(OH)3
Description: Occurs as thin semas of granular material in cuprite, coated by aurichalcite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183, 230, 336; Williams, S.A. (1961), Gerhardtite from the Daisy shaft, Mineral Hill mine, Pima Co., AZ, AZ Geol. Soc. Digest: 4: 123.
Goethite
Formula: α-Fe3+O(OH)
Localities: Reported from at least 16 localities in this region.
Description: Occurs as fine, earthy powders; a constituent of a yellow-brown to deep brown limonitic crust on the rusty outcrops of the oxidized part of the orebody.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 233; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 91; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Gold
Formula: Au
Localities: Reported from at least 89 localities in this region.
Description: Cementing some fractures in bornite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 235; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Gonnardite
Formula: (Na,Ca)2(Si,Al)5O10 · 3H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 237.
Goslarite
Formula: ZnSO4 · 7H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 238; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Goslarite var. Cuprogoslarite
Formula: ZnSO4 · 7H2O
Description: Occurs in old mine workings.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 238; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 61.
Grossular
Formula: Ca3Al2(SiO4)3
Description: Abundant in tactites result of pyrometasomatic alteration of limestone.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 240.
'Gummite'
Description: Occurs in a vein cutting arkose.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 241, 399; Robinson, R.L. (1955), Linda Lee claims, Pima Co., AZ, US Atomic Energy Comm. Prelim. Reconn. Rept. A-P-331.
Gypsum
Formula: CaSO4 · 2H2O
Localities: Reported from at least 39 localities in this region.
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Gypsum var. Satin Spar Gypsum
Formula: CaSO4 · 2H2O
Gypsum var. Selenite
Formula: CaSO4 · 2H2O
Localities: Reported from at least 6 localities in this region.
Halite
Formula: NaCl
Description: A little with epsomite and its dehydration products.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89.
Halloysite-10Å
Formula: Al2Si2O5(OH)4 · 2H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 213.
Hausmannite
Formula: Mn2+Mn3+2O4
Description: Forms veinlets cutting a matrix of braunite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 145, 244; Hewett, D.F. (1972), Manganite, hausmannite, braunite: Features, modes of origin, Economic Geology: 67: 83-102.
Hedenbergite
Formula: CaFe2+Si2O6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 245.
Hematite
Formula: Fe2O3
Localities: Reported from at least 105 localities in this region.
Description: Earthy variety of supergene origin.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 246, 298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Hematite var. Specularite
Formula: Fe2O3
Localities: Reported from at least 47 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 82 (Table 4); Gilluly (1946); Arizona Bureau of Mines file data.
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Localities: Reported from at least 10 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 357.
'Heulandite'
Description: Occurs in a dike with calcite and ferrierite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 220; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Hisingerite
Formula: Fe3+2(Si2O5)(OH)4 · 2H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 251; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
'Hornblende'
Description: Rock forming minerals. Often partially to completely altered to chlorite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 93..
Hübnerite
Formula: MnWO4
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 105 (Table 4); Dale, et al (1960): 102-104; Arizona Bureau of Mines file data.
Huntite
Formula: CaMg3(CO3)4
Description: As nodular masses in altered limestone with magnesite & as micro-crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 253, 284.
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Reference: Rolf Luetcke
'Hypersthene'
Formula: (Mg,Fe)SiO3
Description: As the enstatite-hypersthene series.
Reference: Galbraith, F.W. & Brennan (1959), Minerals of AZ: 89.
Ilmenite
Formula: Fe2+TiO3
Description: A little is associated with magnetite as primary accessory constituent of the Cornelia quartz monzonite; much formed as alteration of titanite during ore deposition.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 90.
Iodargyrite
Formula: AgI
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 259; Guild, F.N. (1910), The mineralogy of Arizona, The Chemical Publishing Co., Easton, PA; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 43; Dana 6:160.
Iron
Formula: Fe
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Iron var. Kamacite
Formula: (Fe,Ni)
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Localities: Reported from at least 23 localities in this region.
Reference: Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, AZ Bur. Mines Bull. 158: 55.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Localities: Reported from at least 15 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Kasolite ?
Formula: Pb(UO2)(SiO4) · H2O
Reference: Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in Arizona, USGS Bull. 1147-A: A31-A34.
'K Feldspar'
Reference: MRDS database Dep. ID file #10095456, MRDS ID #M051072.
Kinoite
Formula: Ca2Cu2(H2O)2[Si3O10]
Habit: Small, tabular, euhedral
Description: As crystals in veinlets.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 185, 268; Anthony, J.W. & R.B. Laughton (1970), Kinoite, A new hydrous copper calcium silicate mineral from Arizona, Am.Min.: 55: 709-713.
Laumontite
Formula: CaAl2Si4O12 · 4H2O
Habit: Crystals elongate
Colour: Pink
Description: Occurs with calcite in andesite dikes.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 272; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Lazaraskeite (TL)
Formula: Cu(C2H3O3)2
Type Locality:
Reference: Yang, H., Gibbs, R.B., Gu, X., Evans, S.H., Downs, R.T. and Jabrin, Z. (2019) Lazaraskeite, IMA 2018-137. CNMNC Newsletter No. 48, April 2019, page xxx; European Journal of Mineralogy, 31, xxx-xxx.
Lazulite
Formula: MgAl2(PO4)2(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 273.
Leadhillite
Formula: Pb4(CO3)2(SO4)(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 274, 278; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Lechatelierite
Formula: SiO2
Reference: azminerals.com
Lepidocrocite
Formula: γ-Fe3+O(OH)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 275; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Leucosphenite
Formula: BaNa4Ti2B2Si10O30
Habit: Micro-crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 276; Roe, A. (1980), Micromounting in AZ, Min.Rec.: 11: 261-265.
Libethenite
Formula: Cu2(PO4)(OH)
Localities: Reported from at least 10 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 277.
'Limonite'
Localities: Reported from at least 172 localities in this region.
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 168-169.
Linarite
Formula: PbCu(SO4)(OH)2
Description: Micro-crystals assoc. with brochantite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278.
Lindgrenite
Formula: Cu3(MoO4)2(OH)2
Description: Very sparse.
Reference: thony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278.
Litharge
Formula: PbO
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 121, 279; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Lizardite
Formula: Mg3(Si2O5)(OH)4
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 280.
Ludwigite
Formula: Mg2Fe3+(BO3)O2
Description: Occurs in a contact zone.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 281.
Maghemite
Formula: (Fe3+0.670.33)Fe3+2O4
Description: Occurs as a thin, brownish surface as an alteration product on magnetite pebbles and boulders.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 282.
Magnesio-hornblende
Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 283.
Magnesite
Formula: MgCO3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 253, 284.
Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 61 localities in this region.
Habit: discrete euhedral octahedra commonly a fraction of a mm diameter (in quartz monzonite)
Description: Appears to be of 2 generations. Older generation is a primary constituent of the Cornelia quartz monzonite; younger generation as veinlets (very thin to 4 inches (10 cm) thick, associated with pegmatites in the ore deposit
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 90-91; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Malachite
Formula: Cu2(CO3)(OH)2
Localities: Reported from at least 194 localities in this region.
Reference: [www.johnbetts-fineminerals.com]
'Manganese Oxides'
Reference: P Cristofono collection, 2006
'Manganese Oxides var. Manganese Dendrites'
Reference: P Cristofono collection, 2006
Manganite
Formula: Mn3+O(OH)
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 116 (Table 4); Farnham, et al (1961): 109-111.
Marcasite
Formula: FeS2
Localities: Reported from at least 10 localities in this region.
Description: Occurs as an alteration product of pyrrhotite
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 290; Webber, B.N. (1929), Marcasite in the contact metamorphic ore deposits of the Twin Buttes district, Pima Co., AZ, Econ.Geol. 24: 304-310; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 24.
Massicot
Formula: PbO
Colour: Yellow
Description: Earthy alteration product of galena.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 291.
Matlockite
Formula: PbFCl
Description: Occurs as a single crystal in parallel growth with a prismatic anglesite crystal.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278, 291.
'Medmontite'
Reference: António Manuel Ináçio Martins collection.
Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Melanterite var. Copper-bearing Melanterite
Formula: (Fe,Cu)SO4 · 7H2O
Description: Occurs in small amounts.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 61; Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 292.
Mercury
Formula: Hg
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 117 (Table 4); Arizona Bureau of Mines file data.
Meta-alunogen
Formula: Al2(SO4)3 · 12H2O
Description: Forms crusts from a seep with gypsum.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 294.
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Description: Occurs with other copper minerals.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 109 (Table 4); Arizona Bureau of Mines file data.
'Mica Group'
Reference: MRDS database Dep. ID file #10065015, MRDS ID #TC40002.
Microcline
Formula: K(AlSi3O8)
Habit: Coarse; anhedral in the pegmatites; in vugs crystals to 3 or 4 inches (5 to 10 cm) across with well-developed domes & clinopinacoids.
Description: Occurs in the south-central part of the orebody as coarse crystals in the pegmatite masses; sparsely distributed individual grains in normal quartz monzonite & in narrow veins.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 92; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Miersite
Formula: (Ag,Cu)I
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 298; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Mimetite
Formula: Pb5(AsO4)3Cl
Description: Micro-crystals occur with wulfenite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 299.
Minium
Formula: Pb3O4
Localities: Reported from at least 6 localities in this region.
Description: As coatings on wulfenite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 300.
Molybdenite
Formula: MoS2
Localities: Reported from at least 60 localities in this region.
Description: In vugs and open fissures resting on chalcopyrite crystals and quartz; smears on slickensided joints.
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 87; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Molybdenite-2H'
Formula: MoS2
Reference: Frondel,Judith W. and Wickman ,Frans E,(1970) Molybdenite Polytypes In Theory And Occurrence,II.Some Naturally -Occurring Polytypes Of Molybdenite,The America MIneralogist,Vol.55,Nov-Dec,1970
'Monazite'
Formula: REE(PO4)
Description: Rock forming minerals
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Description: An alteration product replacing feldspar in dacite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 305; Kerr, P.F. (1951), Alteration features at Silverbell, AZ, Geol. Soc. Amer. Bull.: 62: 451-480.
Mordenite
Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O
Description: Occurs in altered tuff.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 306; Eyde, T.H. (1978), Arizona zeolites, AZ Dept. Mineral Resources Mineral Rept. 1.
Mottramite
Formula: PbCu(VO4)(OH)
Localities: Reported from at least 9 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 307; Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107; Guild, F.N. (1910), The Mineralogy of Arizona, The Chemical Publishing Co., Easton, PA; Guild, F.N. (1911), Mineralogische Notizen, Zeit. Krystal. und Mineral.: 49: 321-331; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 70.
Murdochite
Formula: PbCu6O8-x(Cl,Br)2x
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123, 308, 331; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 83 localities in this region.
Description: As 'books' of broadleaved, rather coarsely crystalline material in the Cardigan gneiss and associated pegmatites.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 94-95.
Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 309.
Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Reference: MRDS database Dep. ID file #10060262, MRDS ID #TC10261.
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Localities: Reported from at least 71 localities in this region.
Description: Occurs in altered Laramide granitic intrusive.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 105 (Table 4); Dale, et al (1960): 102-104; Arizona Bureau of Mines file data.
Neotocite
Formula: (Mn,Fe,Mg)SiO3 · H2O
Colour: Black
Description: Occurs as dendrites.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Nepheline
Formula: Na3K(Al4Si4O16)
Description: Occurs in nepheline syenite in an exploratory drill hole.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312; Schmidt, H.A., et al (1959), Disseminated deposits at the Esperanza copper mine, in Southern AZ Guidebook II, AZ Geol. Soc. Digest: 2: 205.
Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Description: Occurs in the supergene zone in collapse breccias.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 314.
Olivenite
Formula: Cu2(AsO4)(OH)
Description: Occurs as small crystals with ajoite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 316; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 8 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89.
Opal var. Opal-AN
Formula: SiO2 · nH2O
Reference: No reference listed
Orthoclase
Formula: K(AlSi3O8)
Localities: Reported from at least 8 localities in this region.
Habit: Crystals to several inches diameter
Description: Part of a massive replacement of quartz monzonite; phenocrysts in the Cornelia quartz monzonite & minute crystals in the groundmass of the monzonite. Primary igneous mineral and secondary replacements of groundmass.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 298, 318; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 92; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Osarizawaite
Formula: Pb(Al2Cu2+)(SO4)2(OH)6
Colour: Blue
Description: Attractive massive to micro-crystalline material.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 319; Stolberg, C.S. (1988), Osarizawaite from the Silver Hill mine, AZ, Min.Rec.: 19: 311-313.
Oxyplumboroméite
Formula: Pb2Sb2O6O
Reference: collected 2/5/08 by and in the collection of Eckhard D. Stuart
Palygorskite
Formula: (Mg,Al)2Si4O10(OH) · 4H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 319-320; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Papagoite (TL)
Formula: CaCu[H3AlSi2O9]
Type Locality:
Habit: Elongated, somewhat flattened crystals
Colour: Cerulean-blue
Description: Occurs in narrow veinlets & in veneers on slip surfaces in altered granodiorite porphyry.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 319-320; Hutton, C.O. & A.C. Vlisidis (1960), Papagoite, a new copper-bearing mineral from Ajo, AZ, Am.Min.: 45: 599-611; Guillebert, C. & M.T. Le Bihan (1965), Contributions à l'étude structurale des silicates de cuivre: Structure atomique de la papagoite, Bull. Soc. Franc. Min. Crist: 88: 119-121.
Paratacamite
Formula: Cu3(Cu,Zn)(OH)6Cl2
Description: Fibrous & granular masses embaying linarite & as pseudomorphs after atacamite in quartz veins cutting andesite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 278, 321; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Perovskite
Formula: CaTiO3
Description: Occurs as polysynthetically twinned cores of titanite crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 325; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56; www.admmr.state.az.us/circ9titanium.htm.
'Petrified Wood'
Description: Occurs in Cretaceous red beds.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 350.
'Phillipsite subgroup'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 326.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Piemontite
Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Localities: Reported from at least 6 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 328.
Plancheite
Formula: Cu8(Si8O22)(OH)4 · H2O
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81.
Planerite
Formula: Al6(PO4)2(PO3OH)2(OH)8 · 4H2O
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Plattnerite
Formula: PbO2
Localities: Reported from at least 6 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 123, 308, 331; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Plumbojarosite
Formula: Pb0.5Fe3+3(SO4)2(OH)6
Localities:
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 117 (Table 4); Schrader (1915): 149; Arizona Bureau of Mines file data.
Polybasite
Formula: [(Ag,Cu)6(Sb,As)2S7][Ag9CuS4]
Reference: MRDS database Dep. ID file #10039562, MRDS ID #M050286.
Posnjakite
Formula: Cu4(SO4)(OH)6 · H2O
Description: Associated with gypsum and partly altered pyrite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 334.
'Potash Clay'
Description: Occurs in a weathered, copper-stained quartz keratophyre.
Reference: Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 96.
Powellite
Formula: Ca(MoO4)
Localities: Reported from at least 16 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 118 (Table 4); Wilson, E.D. (1941): 36; Dale, et al (1960): 107-109; Arizona Bureau of Mines file data.
Prehnite
Formula: Ca2Al2Si3O10(OH)2
Description: Occurs in skarn or tactite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 199.
Pseudoboleite
Formula: Pb31Cu24Cl62(OH)48
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 183, 336; Williams, S.A. (1961), Gerhardtite from the Daisy shaft, Mineral Hill mine, Pima Co., AZ, AZ Geol. Soc. Digest: 4: 123.
Pseudobrookite
Formula: Fe2TiO5
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 336.
Pseudomalachite
Formula: Cu5(PO4)2(OH)4
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Psilomelane'
Formula: Mn, O
Localities: Reported from at least 15 localities in this region.
Reference: No reference listed
'Pumpellyite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 167.
Pyrite
Formula: FeS2
Localities: Reported from at least 240 localities in this region.
Habit: Crystals to 1 cm, bounded by pyritohedral and cubic faces.
Description: Relatively scarce in this porphyry orebody. Particularly abundant in dioritic border facies; also in Concentrator volcanics as a few fine crystal groups. Veinlets to 2 - 3 cm thick and discrete grains in silicates, quartz, and magnetite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 341; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81.
Pyrite var. Cupriferous Pyrite
Formula: FeS2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 126 (Table 4); Schrader (1915): 108-110; Arizona Bureau of Mines file data.
Pyrite var. Gold-bearing Pyrite
Formula: FeS2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 108 (Table 4); Arizona Bureau of Mines file data.
Pyrolusite
Formula: Mn4+O2
Localities: Reported from at least 13 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Pyromorphite
Formula: Pb5(PO4)3Cl
Reference: Univ. of AZ Bull. 41 (1916-17), Mineralogy of Useful Minerals in AZ: 51; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 72.
Pyrophyllite
Formula: Al2Si4O10(OH)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 345.
'Pyroxene Group'
Reference: MRDS database Dep. ID file #10039575, RDS D #M050359.
Pyrrhotite
Formula: Fe1-xS
Localities: Reported from at least 13 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 125 (Table 4); Arizona Bureau of Mines file data.
Quartz
Formula: SiO2
Localities: Reported from at least 74 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 225; Bideaux, R.A., et al (1960), Some new occurrences of minerals of AZ, AZ Geol. Soc. Digest: 3: 53-56; Jones, D. (1983), The Old Yuma mine, Min.Rec.: 14: 95-107.
Quartz var. Agate
Colour: Blue & white
Description: Occurs in abundant geodes in basalt flows.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 348; Guild, F.N. (1905), Petrography of the Tucson Mountains, Amer. Jour. Sci.: 20: 313; Galbraith, F.W. & Brennan (1959), Minerals of AZ: 85.
Quartz var. Carnelian
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 348.
Quartz var. Chalcedony
Formula: SiO2
Localities: Reported from at least 13 localities in this region.
Colour: Emerald-green
Description: Occurs as clear, nearly transparent material of beautiful color.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 85.
Quartz var. Fortification Agate
Formula: SiO2
Colour: Blue & white banded
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 348.
Quartz var. Jasper
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 102 (Table 4); Arizona Bureau of Mines file data.
Quartz var. Milky Quartz
Formula: SiO2
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 112 (Table 4); Arizona Bureau of Mines file data.
Quartz var. Rock Crystal
Formula: SiO2
Description: Occurs in geodes in basalt flows.
Reference: Galbraith, F.W. & Brennan (1959), Minerals of AZ: 84.
Quartz var. Smoky Quartz
Formula: SiO2
Reference: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 175.
Ranciéite
Formula: (Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2O
Description: Occurs in vugs in volcanic rock with zeolites.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 352.
Rhodochrosite
Formula: MnCO3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 353.
Rhodonite
Formula: CaMn3Mn[Si5O15]
Description: Minor.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 108 (Table 4); Farnham, et al (1961): 121-122.
'Riebeckite Root Name Group'
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 355.
'Riebeckite Root Name Group var. Crocidolite'
Formula: ◻[Na2][Z2+3Fe3+2]Si8O22(OH,F,Cl)2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 355.
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Localities: Reported from at least 10 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 286, 357, 374; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 53.
Rutile
Formula: TiO2
Localities: Reported from at least 6 localities in this region.
Habit: Stumpy, euhedral, somewhat rounded prisms (primary material).
Description: Rock forming mineral; microscopic constitutent of the quartz monzonite; sagenite type formed during chloritization of biotite; primary material as stumpy crystals. It occurs as equant grains over 20 microns at roughly 0.1% in-K feldspar. It is high in Nb.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 91.
Samarskite-(Y)
Formula: YFe3+Nb2O8
Colour: Black
Description: Occurs as shiny crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 360; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 41
Sanidine
Formula: K(AlSi3O8)
Description: Clear, round phenocrysts in rhyolite welded tuffs.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 360.
Sanidine var. Barium-Sanidine
Formula: K(AlSi3O8)
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 312; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 361.
'Scapolite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 102; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
Scheelite
Formula: Ca(WO4)
Localities: Reported from at least 66 localities in this region.
Reference: Personal knowledge and consultations with knowledgeable professionals
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Localities: Reported from at least 6 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 400.
Schreibersite
Formula: (Fe,Ni)3P
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Scorodite ?
Formula: Fe3+AsO4 · 2H2O
Reference: MRDS database Dep. ID file #10039817, MRDS ID #M050897.
Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 366.
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D = Mg, Fe, Ni, Mn, Al, Zn
Description: Occurs in metamorphic rocks.
Reference: Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 368.
Shattuckite
Formula: Cu5(Si2O6)2(OH)2
Description: Occurs at times included in quartz.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 319-320, 369; Vlisidis, A.C. & W.T. Schaller (1967), The formula of shattuckite, Am.Min.: 52: 782-786; Mrose, M.E. & A.C. Vlisidis (1966), Proof of the formula of shattuckite, Cu5(SiO3)4(OH)2 (abs.), Am.Min.: 51: 266-267; DeKalb (1918); Evans, H.T. & M.E. Mrose (1977), The crystal chemistry of the hydrous copper silicates, shattuckite and plancheite, Am.Min.: 62: 491-502; Schaller, W.T. & A.C. Vlisidis (1958), Ajoite, a new hydrous aluminum copper silicate, Am.Min.: 43: 1107-1111; Hutton, C.O. & A.C. Vlisidis (1960), Papagoite, a new copper-bearing mineral from Ajo, AZ, Am.Min.: 45: 599-611; Sun, M.S. (1961), Differential analysis of shattuckite, Am.Min.: 46: 67-77; Newberg, D.W. (1964), X-ray study of shattuckite, Am.Min.: 49: 1234-1239; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 111.
Siderite
Formula: FeCO3
Localities: Reported from at least 15 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Silica'
Localities: Reported from at least 9 localities in this region.
Reference: MRDS database Dep. ID file #10065016, MRDS ID #TC40003.
Silver
Formula: Ag
Localities: Reported from at least 9 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Smithsonite
Formula: ZnCO3
Localities: Reported from at least 22 localities in this region.
Habit: Small rhombohedra
Colour: Pale blue
Description: Small crystals & pale blue botryoidal masses. Dry Bone ore.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 374; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 49.
Smithsonite var. Dry Bone Ore
Formula: ZnCO3
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 374.
Spessartine
Formula: Mn2+3Al2(SiO4)3
Description: Occurs as a dense green rock.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 397; Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mountains, Pima Co., AZ, AZ Geol. Soc. Digest: 3: 47.
Sphalerite
Formula: ZnS
Localities: Reported from at least 103 localities in this region.
Reference: MRDS database Dep. ID file #10039672, MRDS ID #M050626.
Sphalerite var. Marmatite
Formula: (Zn,Fe)S
Colour: Black
Description: Masses of crystalline material in a matrix of snow-white wollastonite and marble.
Reference: ASARCO site geologist.
Stephanite
Formula: Ag5SbS4
Reference: MRDS database Dep. ID file #10039562, MRDS ID #M050286.
'Stetefeldtite'
Formula: Ag2Sb2(O,OH)7
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 381.
'Stibiconite'
Formula: Sb3+Sb5+2O6(OH)
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Stibnite
Formula: Sb2S3
Reference: Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 22.
'Stilbite subgroup'
Formula: M6-7[Al8-9Si27-28O72] · nH2O
Habit: Bladed
Colour: Yellow
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 383; Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Stolzite
Formula: Pb(WO4)
Reference: Collected by Mark Ascher sight identified
Stringhamite
Formula: CaCu(SiO4) · H2O
Description: Occurs with associated species in wollastonite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 268, 385.
Stromeyerite
Formula: AgCuS
Reference: Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of mines Bull. 153: 9, 16, 17, 27; Dana 7:I:191.
Sulphur
Formula: S8
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Svanbergite
Formula: SrAl3(PO4)(SO4)(OH)6
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 387; Williams, S.A, (1963), Oxidation of sulfide ores in the Mildren and Steppe mining districts, Pima Co., AZ, Econ.Geol.: 58: 1119-1125.
Taenite
Formula: (Fe,Ni)
Reference: Bunch, T.E., Fuchs, L.H. (1969) A new mineral: brezinaite, Cr3S4, and the Tucson meteorite. American Mineralogist: 54: 1509–1518.
Talc
Formula: Mg3Si4O10(OH)2
Reference: Galbraith, F.W. (1947), Minerals of Arizona, AZ Bur. Mines Bull. 153: 388.
'Tennantite Subgroup'
Formula: Cu6(Cu4 C2+2)As4S12S
Localities: Reported from at least 6 localities in this region.
Description: Subordinate amounts in tetrahedrite nuclei of grains whose borders are composed of bornite and chalcopyrite.
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Tenorite
Formula: CuO
Localities: Reported from at least 32 localities in this region.
Description: Relatively small amounts; black crusts on chalcocite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 90.
'Tetrahedrite Subgroup'
Formula: Cu6(Cu4 C2+2)Sb4S12S
Localities: Reported from at least 32 localities in this region.
Description: Nuclei of composite grains whose borders are composed of bornite and chalcopyrite. Contains subordinate tennantite.
Reference: Gilluly, J. (1937), AZ Bur. Mines Bull. 141: 68-75, 79-81; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 89; Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
'Tetrahedrite Subgroup var. Argentian Tetrahedrite'
Formula: (Cu,Ag)6[Cu4(Fe,Zn)2]Sb4S13
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 137 (Table 4); Ransome (1922): 423; Wilson, E.D. (1950): 48-49; Arizona Bureau of Mines file data.
'Tetrahedrite Subgroup var. Mercurian Tetrahedrite'
Formula: Cu6[Cu4(Zn,Fe,Hg)2]Sb4S13
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 114 (Table 4); Arizona Bureau of Mines file data.
Thénardite
Formula: Na2SO4
Description: Ephemeral thin, spotty crusts on andesitic volcanic rocks.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 395.
Titanite
Formula: CaTi(SiO4)O
Localities: Reported from at least 8 localities in this region.
Habit: Euhedral; commonly 1 mm, & locally more than 3 mm long.
Description: Rock forming mineral. Conspicuous in euhedral crystals in the Cornelia quartz monzonite.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 97.
Topaz
Formula: Al2(SiO4)(F,OH)2
Description: In New Cornelia Quartz Monzonite West of Gibson Arroyo fault.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 399; Gilluly, J. (1937), Geology and ore deposits of the Ajo quadrangle, AZ, AZ Bur. of Mines Bull. 141.
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Localities:
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 135 (Table 4); Arizona Bureau of Mines file data.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Localities: Reported from at least 6 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 104; Williams, S.A. (1960), A new occurrence of allanite in the Quijotoa Mts, Pima Co., AZ, AZ Geol. Soc. Digest: 3: 46-51.
Tremolite
Formula: ◻{Ca2}{Mg5}(Si8O22)(OH)2
Localities: Reported from at least 13 localities in this region.
Description: Occurs in contact-metamorphosed rocks.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 402.
Tridymite
Formula: SiO2
Description: Occurs in cavities in andesite.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 192, 402; Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 86, 108.
Tsumebite
Formula: Pb2Cu(PO4)(SO4)(OH)
Reference: Ron Gibbs
Turquoise
Formula: CuAl6(PO4)4(OH)8 · 4H2O
Localities: Reported from at least 10 localities in this region.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298.
Uraninite
Formula: UO2
Localities: Reported from at least 11 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 126 (Table 4); Schrader (1915): 119; Arizona Bureau of Mines file data.
Uraninite var. Pitchblende
Formula: UO2
Description: Sooty variety.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 132 (Table 4); Granger, H.C. & R.B. Raup (1962), Recon. study of uranium deposits in AZ, USGS Bull. 1147-A: A25-A29.
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 140 (Table 4); Granger, H.C. & R.B. Raup (1962), Reconnaissance study of uranium deposits in AZ, USGS Bull. 1147A: A29; Arizona Bureau of Mines file data.
Valleriite
Formula: (Fe2+,Cu)4(Mg,Al)3S4(OH,O)6
Reference: [MinRec 9:113]
Vanadinite
Formula: Pb5(VO4)3Cl
Localities: Reported from at least 9 localities in this region.
Description: Exceptionally beautiful specimens and as pseudomorphs after wulfenite.
Reference: Guild, F.N. (1911) Mineralogische Notizen. Zeitschrift für Krystallografie und Mineralogie, 49, 321-331.; University of Arizona Bulletin 41 (1916-17) Mineralogy of Useful Minerals in Arizona: 59.; Jenkins, O.P. and Wilson, E.D. (1920) A geological reconnaissance of the Tucson and Amole Mountains, with Notes on the southern section of the Amole mining district, by M.A. Allen: Arizona Bureau of Mines Bulletin no. 106, 29 pp.: 6, 16-17.; Galbraith, F.W. and Brennan, D.J. (1959) Minerals of Arizona: 73.; Bideaux, R.A. et al. (1960) Some new occurrences of minerals of Arizona. Arizona Geological Society Digest, 3, 53-56.; Speckels, M.L. (1965) Minerals for everyone: the complete guide to micromounts. Gembooks, Mentone, California.; Keith, Stanton B. (1974) Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bulletin 189: Index of Mining Properties in Pima County, Arizona: 102 (Table 4).; Jones, D. (1983) Famous mineral localities: the Old Yuma mine. Mineralogical Record, 14(2), 95-107, 326.; Rocks & Minerals (1988) 63, 328.; Anthony, J.W. et al. (1995) Mineralogy of Arizona, 3rd. ed.: 158, 331, 410.
Vermiculite
Formula: Mg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4 · 8H2O
Description: Occurs in rocks metamorphosed by igneous intrusions.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 413; Brown, W.H. (1939), Tucson Mountains, an Arizona basin and range type, Geol. Soc. Amer. Bull.: 50: 697-760.
Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Localities: Reported from at least 8 localities in this region.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 414.
Vesuvianite var. Beryllian Vesuvianite
Formula: (Ca,Na,◻)19(Al,Mg,Fe3+)13(◻,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 109 (Table 4); Dale, et al (1960): 105-106.
'Wad'
Formula: Mn, O, H
Localities: Reported from at least 9 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 115 (Table 4); Farnham, et al (1961): 112-113.
Willemite
Formula: Zn2SiO4
Localities: Reported from at least 10 localities in this region.
Habit: Small, barrel-shaped
Description: Occurs near head of the inclined surface tram.
Reference: Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 96; Min.Rec.: 19: 312.
Witherite
Formula: BaCO3
Description: Occurs as micro-crystals.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 421.
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Localities: Reported from at least 17 localities in this region.
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 104 (Table 4); Arizona Bureau of Mines file data; Wilson, E.D. (1941), AZ Bur. of Mines Bull. 148: 39.
Wollastonite
Formula: CaSiO3
Localities: Reported from at least 20 localities in this region.
Reference: Personal knowledge and consultations with knowledgeable professionals
Wulfenite
Formula: Pb(MoO4)
Localities: Reported from at least 39 localities in this region.
Reference: No reference listed
Xenotime-(Y)
Formula: Y(PO4)
Description: Occurs in biotite gneiss.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 227, 427; Bideaux, R.A., et al (1960), Some new occurrences of minerals of Arizona, AZ Geol. Soc. Digest: 3: 53-56.
'Zeolite Group'
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Zircon
Formula: Zr(SiO4)
Localities: Reported from at least 7 localities in this region.
Habit: Small stout prisms
Description: Primary rock forming mineral in the Cornelia quartz monzonite; quite unaffected during mineralization.
Reference: Thomas, W.J. & R.B. Gibbs (1983), Famous mineral localities: The New Cornelia mine, Ajo, AZ, Min.Rec.: 14: 283-298; Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 93..
Zoisite
Formula: Ca2Al3[Si2O7][SiO4]O(OH)
Reference: Keith, Stanton B. (1974), AZ Bur. of Geol. & Min. Technology, Geol. Survey Br. Bull. 189, Index of Mining Properties in Pima County, AZ: 108 (Table 4); Dale, et al (1960): 70.

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