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American Mine (Virginia Hay claims), American Peak, Harshaw Mining District, Patagonia Mountains, Santa Cruz Co., Arizona, USAi
Regional Level Types
American Mine (Virginia Hay claims)Mine
American PeakPeak
Harshaw Mining DistrictMining District
Patagonia MountainsMountain Range
Santa Cruz Co.County
ArizonaState
USACountry

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Key
Latitude & Longitude (WGS84):
31° 27' 17'' North , 110° 43' 19'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Patagonia890 (2017)10.0km
Kino Springs136 (2011)13.2km
Beyerville177 (2011)16.5km
Francisco Miguel Cárdenas Valdez (Mascareñas)541 (2014)21.1km
Nogales20,252 (2017)23.8km


‡Ref.: The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Scottsdale, AZ: 43.

Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 277-278.

Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia Mountains, Arizona, Economic Geology: 12: 237-269.

Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 15.

Galbraith, F.W. & Brennan (1959), Minerals of Arizona: 42.

Baker (1962);

Moores, R.C., III (1972) The geology and ore deposits of a portion of the Harshaw district, Santa Cruz County, Arizona: Tucson, University of Arizona, M.S. thesis, 98 p.: 74.

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: E8-E9.

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.

Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56.

U.S. Bureau of Mines files, American Mine.

U.S. Bureau of Mines Coronado National Forest Study.

U.S. Bureau of Mines - Arizona Bureau of Geology and Mineral Technology file data.

Arizona Department of Mineral Resources file data, Big Jim Mine.

Arizona Bureau of Mines file data.

MRDS database Dep. ID file #10048358, MRDS ID #M899947; and, Dep. ID #10137423, MAS ID #0040230030.

A former small underground Ag-Pb-Zn-Cu-Au-Mn mine located in West-central (SW¼SW¼SW¼) sec. 4, T.23S., R.16E (protracted), 13 miles S of Patagonia, 1½ miles SSW of Harshaw, ½ mile SW of the Hardshell Mine, about ¼ mile east of the old Mowry stagecoach road, in the short, steep gulch at the NW slope of American Peak, at an elevation of about 5,400 feet. The property is comprised of 1 patented claim and one patented millsite claim. Discovered in 1880. Produced 1880-1943. Owned by Virginia Hay (?-1974). Operated by the Marcia Brothers; Mr. Tony Garcia; American Lease; and, Giacoma.

Mineralization is a WNW-trending lensing quartz vein and replacement lenses with argentite, chlorargyrite, pyrite, sphalerite, galena, and tetrahedrite in a silicified limestone conglomerate within Cretaceous andesite. Rhyolite is locally much altered to sericite, epidote, carbonate, and chlorite. Spotty high-grade silver values are found in the oxidized surface zone. Closely associated with Jurassic-triassic volcanics. Surface oxidation exists to 90 feet of depth. The ore zone is 45.72 meters long, 9.14 meters wide, striking WNW and dipping N.

Geology involves a contact of silicified limestone, or quartzite, with intrusive porphyritic brecciated rhyolite. The dominant structure in the sedimentary rocks dips steeply to the SE, and the rhyolite shows a north-south vertical flow structure and banding. Rhyolite occurs in considerable amount in the north slope of American Peak south of the mine. Blue limestone is said to form the hanging wall on the north in the mine, and the Paleozoic limestone is well exposed in the mountain above and in the gulch below the mine. The vein seems to trend WNW and dips to the north. The vein is normally about 3 feet in width but is reported to widen to 10 feet or more in places, forming pockets or lenses which carry good ore. Most ore was mined from a lens that dips N and is 75 feet long and 14 feet wide.

Tectonic elements are the American Mine Fault Block with upthrow to the NE.

The mine was developed to a depth of 112 feet (circa 1915). Workings totaled some 500 feet (152.4 meters)(circa 1915), including 3 shafts at 90 feet deep each, all connected by drifts on the 90 level, to a total depth of 34.14 meters. Gloryhole operations open the vein for a length of 150 feet and a width of 50 feet. There are 200 feet of drifts and stopes. Almost all ore mined between the surface and the 90 foot level. This mine produced intermittently from the 1880's to 1943. Some 7,800 tons of ore averaging about 21 oz. Ag/T, 2% Pb, minor copper and gold, and some oxidized zinc ore.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


8 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 277-278; Schrader, F.C. (1917), The geologic distribution and genesis of the metals in the Santa Rita-Patagonia ts, AZ, Econ.Geol.: 12: 237-269; Galbraith, F.W. (1947), Minerals of AZ, AZ Bur. of Mines Bull. 153: 15; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 278; Arizona Bureau of Mines file data.
Chalcopyrite
Formula: CuFeS2
Reference: MRDS database Dep. ID file #10048358, MRDS ID #M899947.
Chlorargyrite
Formula: AgCl
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Galbraith, F.W. & Brennan (1959), Minerals of AZ: 42; Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 278; Arizona Bureau of Mines file data.
'Chlorite Group'
Reference: MRDS database Dep. ID file #10048358.
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: MRDS database Dep. ID file #10048358.
Galena
Formula: PbS
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 278; Arizona Bureau of Mines file data.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10048358.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID file #10048358.
Pyrite
Formula: FeS2
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 278; Arizona Bureau of Mines file data.
Sphalerite
Formula: ZnS
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mts, AZ, USGS Bull. 582: 278; Arizona Bureau of Mines file data.
'Tetrahedrite'
Formula: Cu6(Cu4X2)Sb4S13
Reference: Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 56 (Table 4); Arizona Bureau of Mines file data.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
'Tetrahedrite'2.GB.05Cu6(Cu4X2)Sb4S13
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmXp, with m:p = 1:1
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
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
'Tetrahedrite'3.3.6.1Cu6(Cu4X2)Sb4S13
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
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
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H MuscoviteKAl2(AlSi3O10)(OH)2
OOxygen
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O MuscoviteKAl2(AlSi3O10)(OH)2
AlAluminium
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si MuscoviteKAl2(AlSi3O10)(OH)2
SSulfur
S AcanthiteAg2S
S PyriteFeS2
S SphaleriteZnS
S GalenaPbS
S TetrahedriteCu6(Cu4X2)Sb4S13
S ChalcopyriteCuFeS2
ClChlorine
Cl ChlorargyriteAgCl
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
CuCopper
Cu TetrahedriteCu6(Cu4X2)Sb4S13
Cu ChalcopyriteCuFeS2
ZnZinc
Zn SphaleriteZnS
AgSilver
Ag AcanthiteAg2S
Ag ChlorargyriteAgCl
SbAntimony
Sb TetrahedriteCu6(Cu4X2)Sb4S13
PbLead
Pb GalenaPbS

Other Databases

USGS MRDS Record:10048358

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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