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Red Mountain Mine (Red Mountain Copper prospect; Gem Mine; Carlton property; Ten Grand Mine; Red Mountain project), Red Mountain, Patagonia Mts, Santa Cruz Co., Arizona, USAi
Regional Level Types
Red Mountain Mine (Red Mountain Copper prospect; Gem Mine; Carlton property; Ten Grand Mine; Red Mountain project)Mine
Red MountainMountain
Patagonia MtsMountain Range
Santa Cruz Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
31° 30' 12'' North , 110° 43' 6'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Patagonia890 (2017)5.4km
Kino Springs136 (2011)17.8km
Beyerville177 (2011)19.7km
Sonoita818 (2015)20.4km
Rio Rico18,962 (2011)24.7km


A former small surface and underground Cu-Al-Zn-Pb-Mo-Au-K-Clay mine located in the center of the SW¼ sec. 21, T22S, R16E, 2.5 miles SE of Patagonia, on National Forest land. Discovered 1970 (Cu). Owned and operated by Kerr-Mc Gee Oil Industries, Inc., Earth Sciences, Inc. (1966). Claims extend into sections 20 and 17, on the northern and eastern slopes of Red Mountain. USBM gives section as 20 and longitude of 110-44-14W.

Mineralization is a porphyry copper deposit with hypogene enrichment of fractured intrusives. Gossan and some oxidized copper on surface indicates surface ozidation and leaching. Felsic volcanic rocks are pervasively altered solfatarically. Ore control was disseminations of chalcopyrite, bornite, and molybdenite in porous fractured intrusives at great depths. Alteration is high pyritic phyllic alteration surrounded by pyritic-argillic and propyllitic alteration. With depth sulphur decreases and changes from near-surface sulphur-rich phyllitic alteration, through weak potassic alteration, to low-sulphur potassic alteration at depth. Alunitization and silicification.

Significant copper mineralization encountered from 3410 feet to 5194 feet below surface. Alunite deposits found near surface in an area of 4000-5000 acres. The average copper and associated molybdenite ore zone thickness is 455 feet. Alunite deposit dimentions: maximum length of 10,000 feet; maximum width of 6000 feet; and a maximum thickness of 800 feet. Structure is a collapse caldera with intrusive source of Cu mineralization. Supergene enriched chalcocite blanket overlies the primary chalcopyrite.

The Red Mountain volcanics have been correlated with the Gringo Gulch Volcanics to the north and west, which give above K/Ar dates. The Red Mountain Volcanics overlie trachyandesite of Meadow Valley dated at 72.1 +/- 2.2 M.Y. (Simons, F.S., 1974). Basal contact between tuffaceous volcanics and underlying trachyandesite is roughly horizontal. The thickness of the Red Mountain Volcanics is estimated at 1500 feet.

Local structures. In the Patagonia Mountains the dominant structural features are major NW-trending, high-angle faults. This includes the Harshaw Creek Fault. The Patagonia Fault is a major NE-trending fault. E-W and N-S-trending faults are found in Tertiary volcanics.

Tectonic elements include the Red Mountain Fault Block with downthrow to the north.

Analytical data, including X-ray, chemical, and thin section data indicate variable tenor of alunite with considerable kaolinite, pyrophyllite, and sericite locally. Pb exceeds 100 ppm in high pyrite alteration zones, diminishing with depth; Mo exceeds 20 ppm throughout phyllic alteration zones; Zn averages 20-100 ppm in a near-surface leached zone; chalcopyrite increases with depth, averaging 0.1-0.7% Cu.

Workings extend to a depth of 138.68 meters. Kerr-McGee conducted deep drilling exploration for Cu ore; Earth Science conducted shallow percussion drilling exploration for alunite. Red Mountain interests comprise 289 unpatented claims (151 under option from W.D. Roper, 45 from A. Desaulles, 11 from J. Yanez, 4 from Carlton Spalding, 93 claimed by Kerr-McGee). Diamond drilling was conducted by Sexton Brothers drilling contractors, Metler Brothers Drilling Co., and the Joy Drilling Co.

Workings included over 10 drill holes for copper exploration, a few over 1000 feet deep, and a 688 foot exploration tunnel into the mountain. Workings on the Ten Grand claim included a 1500 foot tunnel. Alunite exploration consisted of surface drilling only (no mining).

Regions containing this locality

North America PlateTectonic Plate
Sonoran Desert, North AmericaDesert

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Alunite
Formula: KAl3(SO4)2(OH)6
Description: Believed to be both primary and secondary.
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 107.
Anhydrite
Formula: CaSO4
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Bornite
Formula: Cu5FeS4
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Chalcocite
Formula: Cu2S
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Chalcopyrite
Formula: CuFeS2
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
'Chlorite Group'
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Covellite
Formula: CuS
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Enargite
Formula: Cu3AsS4
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
'Erionite'
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 216.
Galena
Formula: PbS
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Gypsum
Formula: CaSO4 · 2H2O
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Hematite
Formula: Fe2O3
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Hematite var: Specularite
Formula: Fe2O3
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Molybdenite
Formula: MoS2
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Muscovite var: Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2005): USGS Open-File Report 05-1060
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Pyrite
Formula: FeS2
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 216.
Pyrophyllite
Formula: Al2Si4O10(OH)2
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Sphalerite
Formula: ZnS
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.
Tetrahedrite
Formula: Cu6Cu4(Fe2+,Zn)2Sb4S12S
Reference: MRDS database Dep. ID file #10048337, MRDS ID #M899921.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Covellite2.CA.05aCuS
Enargite2.KA.05Cu3AsS4
Galena2.CD.10PbS
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tetrahedrite2.GB.05Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Alunite7.BC.10KAl3(SO4)2(OH)6
Anhydrite7.AD.30CaSO4
Gypsum7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Illite9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Pyrophyllite9.EC.10Al2Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Erionite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Enargite3.2.1.1Cu3AsS4
3 <ø < 4
Tetrahedrite3.3.6.1Cu6Cu4(Fe2+,Zn)2Sb4S12S
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Anhydrite28.3.2.1CaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Alunite30.2.4.1KAl3(SO4)2(OH)6
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
var: Illite71.2.2d.2K0.65Al2.0[Al0.65Si3.35O10](OH)2
Pyrophyllite71.2.1.1Al2Si4O10(OH)2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Chlorite Group'-
'Erionite'-
Hematite
var: Specularite
-Fe2O3
Kaolinite-Al2(Si2O5)(OH)4
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H AluniteKAl3(SO4)2(OH)6
H KaoliniteAl2(Si2O5)(OH)4
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H PyrophylliteAl2Si4O10(OH)2
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H GypsumCaSO4 · 2H2O
H ApatiteCa5(PO4)3(Cl/F/OH)
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O AluniteKAl3(SO4)2(OH)6
O KaoliniteAl2(Si2O5)(OH)4
O AnhydriteCaSO4
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O MagnetiteFe2+Fe23+O4
O PyrophylliteAl2Si4O10(OH)2
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O GypsumCaSO4 · 2H2O
O ApatiteCa5(PO4)3(Cl/F/OH)
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O HematiteFe2O3
O Hematite (var: Specularite)Fe2O3
O Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F ApatiteCa5(PO4)3(Cl/F/OH)
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al AluniteKAl3(SO4)2(OH)6
Al KaoliniteAl2(Si2O5)(OH)4
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al PyrophylliteAl2Si4O10(OH)2
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si KaoliniteAl2(Si2O5)(OH)4
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si PyrophylliteAl2Si4O10(OH)2
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
S AluniteKAl3(SO4)2(OH)6
S PyriteFeS2
S BorniteCu5FeS4
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S EnargiteCu3AsS4
S MolybdeniteMoS2
S SphaleriteZnS
S TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
S AnhydriteCaSO4
S GypsumCaSO4 · 2H2O
S CovelliteCuS
S GalenaPbS
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K AluniteKAl3(SO4)2(OH)6
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
K Muscovite (var: Illite)K0.65Al2.0[Al0.65Si3.35O10](OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca AnhydriteCaSO4
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca GypsumCaSO4 · 2H2O
Ca ApatiteCa5(PO4)3(Cl/F/OH)
FeIron
Fe PyriteFeS2
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe HematiteFe2O3
Fe Hematite (var: Specularite)Fe2O3
CuCopper
Cu BorniteCu5FeS4
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu EnargiteCu3AsS4
Cu TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
Cu CovelliteCuS
ZnZinc
Zn SphaleriteZnS
Zn TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
AsArsenic
As EnargiteCu3AsS4
MoMolybdenum
Mo MolybdeniteMoS2
SbAntimony
Sb TetrahedriteCu6Cu4(Fe2+,Zn)2Sb4S12S
PbLead
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Schrader, F.C. (1915) Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, with contributions by J.M. Hill: U.S. Geological Survey Bulletin 582, 373 p., 3 sheets, scale 1:125,000.
Mines Magazine (1970) Nov. 1970.
Pay Dirt (1970) September 28, 1970.
Drewes, H.D. (1971) Mesozoic stratigraphy of the Santa Rita Mountains, southeast of Tucson, Arizona: U.S. Geological Survey Professional Paper 658-C, 81 p.
Simons, F.S. (1972) Mesozoic stratigraphy of the Patagonia Mountains and adjoining areas, Santa Cruz County, Arizona, in Mesozoic stratigraphy in southeastern Arizona: U.S. Geological Survey Professional Paper 658-E, p. E1-E23.
Simons, F.S. (1974) Geologic map and sections of the Nogales and Lochiel quadrangles, Santa Cruz County, Arizona: U.S. Geological Survey Miscellaneous Investigations Series Map I-762, 9 p., 1 sheet, scale 1:48,000.
Corn, R.M. (1975) Alteration-mineralization zoning, Red Mountain, Arizona: Economic Geology: 70(8): 1437-1447.
Raup, R.B. (1975) Geologic Map Elgin Quadrangle.
Pay Dirt (1975) March 24, 1975.
Tucson Daily Citizen (1975) February 22, 1975.
World Mining (1976) October 1976.
Skillings Mining Review (1977) 3-26-1977.
Hall, R.B. (1978) World Non-bauxite Aluminum Resources – Alunite. USGS Professional Paper 1076-A: A14.
Sawyer, M.B., Gurmendi, A.C., Daley, M.R., and Howell, S.B. (1992) Principal Deposits of Strategic and Critical Minerals in Arizona, U.S. Bureau of Mines Special Publication, 334 pp.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 107, 216.
Singer, D.A., Berger, V.I., and Moring, B.C. (2005): Porphyry Copper Deposits of the World: Database, Map, and Grade and Tonnage Models. USGS Open-File Report 05-1060.
U.S. Bureau of Land Management Mining District Sheet #721.
U.S. Bureau of Mines files - Red Mountain Mine, Red Mountain project.
MRDS database Dep. ID file #10048337, MRDS ID #M899921; and, Dep. ID #10137861, MAS ID #00402230027.

USGS MRDS Record:10048337
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