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New Cornelia Mine area, New Cornelia Mine, Ajo, Little Ajo Mountains, Ajo Mining District, Pima County, Arizona, USAi
Regional Level Types
New Cornelia Mine areaMining Area
New Cornelia MineMine (Inactive)
AjoUnincorporated Community
Little Ajo MountainsMountain Range
Ajo Mining DistrictMining District
Pima CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
32° North , 112° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~2km
GRN:
N22W68
Type:
Mining Area
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
52270
Long-form identifier:
mindat:1:2:52270:9
GUID (UUID V4):
41200b4d-623e-419f-874d-4922fa244ee0
Other/historical names associated with this locality:
Ajo Mine area


Occurrences near the New Cornelia pit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

15 valid minerals.

Detailed Mineral List:

ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
Description: Dense, porcelainous. Occurs in considerable amount in veins (knife-edge to 3 inches (7.5 cm) thick) cutting Concentrator volcanics east of the head of the approach incline to the pit.
ⓘ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
ⓘ Baryte
Formula: BaSO4
ⓘ Calcite
Formula: CaCO3
Description: Occurs as vesicle fillings in drill cores.
ⓘ Chalcocite
Formula: Cu2S
Description: Minor.
ⓘ Chalcopyrite
Formula: CuFeS2
Description: Occurs in small quartz veins.
ⓘ 'Chlorite Group'
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Description: The most abundant copper mineral that occurs fanglomerate & volcanic rocks, associated with a small amount of malachite, as grains ranging from less than 1 mm to 10 mm & as vein filling in small fractures and long joints.
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Gold
Formula: Au
Description: Small amounts as placer gold evidently derived from the oxidized portion of the New Cornelia orebody.
ⓘ Hematite
Formula: Fe2O3
ⓘ Hematite var. Specularite
Formula: Fe2O3
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
Description: Occurs in small amounts in fanglomerate & volcanic rocks, associated with chrysocolla, as grains ranging from less than 1 mm to 10 mm & as vein filling in small fractures and long joints.
ⓘ Mottramite
Formula: PbCu(VO4)(OH)
Description: Occurs in small quantities as crusts on outcrops of weathered keratophyre and Hospital porphyry. Only definately determined mineral found at Ajo that contains Pb - primary mineral from which derived unknown. Location is SW of the pit, along east side of the approach to the pit.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Planerite
Formula: Al6(PO4)2(PO3OH)2(OH)8 · 4H2O
Description: Doubtfully identified by Miss Glass as a weathering crust, but verified by E. Foord.
ⓘ Quartz
Formula: SiO2
ⓘ 'Stibiconite' ?
Formula: Sb3+Sb5+2O6(OH)
Description: In gossan. No primary mineral from which derived could be found.

Gallery:

Cu2(CO3)(OH)2ⓘ Malachite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘChalcocite2.BA.05Cu2S
ⓘChalcopyrite2.CB.10aCuFeS2
Group 4 - Oxides and Hydroxides
ⓘHematite
var. Specularite		4.CB.05Fe2O3
ⓘ4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘ'Stibiconite' ?4.DH.20Sb3+Sb5+2O6(OH)
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
Group 8 - Phosphates, Arsenates and Vanadates
ⓘMottramite8.BH.40PbCu(VO4)(OH)
ⓘPlanerite8.DD.15Al6(PO4)2(PO3OH)2(OH)8 · 4H2O
Group 9 - Silicates
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘvar. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Unclassified
ⓘ'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ MottramitePbCu(VO4)(OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2O
Hⓘ StibiconiteSb3+Sb25+O6(OH)
Hⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
OOxygen
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Oⓘ BaryteBaSO4
Oⓘ CalciteCaCO3
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ HematiteFe2O3
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MottramitePbCu(VO4)(OH)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2O
Oⓘ QuartzSiO2
Oⓘ StibiconiteSb3+Sb25+O6(OH)
Oⓘ Hematite var. SpeculariteFe2O3
Oⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2O
Alⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
PPhosphorus
Pⓘ PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2O
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
Sⓘ BaryteBaSO4
Sⓘ ChalcopyriteCuFeS2
Sⓘ ChalcociteCu2S
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Caⓘ CalciteCaCO3
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
VVanadium
Vⓘ MottramitePbCu(VO4)(OH)
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ HematiteFe2O3
Feⓘ Hematite var. SpeculariteFe2O3
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ ChalcociteCu2S
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ MottramitePbCu(VO4)(OH)
SbAntimony
Sbⓘ StibiconiteSb3+Sb25+O6(OH)
BaBarium
Baⓘ BaryteBaSO4
AuGold
Auⓘ GoldAu
PbLead
Pbⓘ MottramitePbCu(VO4)(OH)

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

Mexico
North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Gilluly, J. (1937), Arizona Bureau of Mines Bull. 141.
Gilluly, J. (1946), The Ajo mining district, Arizona, USGS PP 209: 97.
Schwartz, G.M. (1958), Alteration of biotite under mesothermal conditions, Economic Geology: 53: 164-177.
Creasey, S.C. (1959), Some phase relations in the hydrothermally altered rocks of porphyry copper deposits, Economic Geology: 54: 351-373.
Anthony, John W., Williams, Sidney A., Bideaux, Richard A., Grant, Raymond W. (1995) Mineralogy of Arizona (3rd ed.) University of Arizona Press, Tucson, AZ.
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