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American Eagle Mine (American Eagle Basin), Copper Creek, Copper Creek (Copper Creek Canyon), Bunker Hill District (Copper Creek District), Galiuro Mountains, Pinal Co., Arizona, USAi
Regional Level Types
American Eagle Mine (American Eagle Basin)Mine
Copper CreekCreek
Copper Creek (Copper Creek Canyon)Creek
Bunker Hill District (Copper Creek District)Mining District
Galiuro MountainsMountain Range
Pinal Co.County

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Latitude & Longitude (WGS84):
32° 44' 57'' North , 110° 29' 44'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
Mammoth1,487 (2017)13.9km
San Manuel3,551 (2011)20.9km
Oracle3,686 (2011)30.0km
Dudleyville959 (2011)36.1km
Winkelman346 (2017)36.9km

A former Cu-Mo-Pb-Zn underground mine located in sec. 11, T8S, R18E, on W slope of North-central Galiuro Mountains on the Copper Creek - Sombrero Butte Road, several hundred feet SW of Copper Creek about ½ mile SE of the Childs-Aldwinkle Mine, and about 1¾ downstream (WSW) of Copper Creek ghost town, on federal land.

Mineralization is in a breccia pipe hosted in dacite. The ore zone is 762 meters long, 457.2 meters wide, 15.24 meters thick, striking N60E and dipping 70N. Concentration process was replacement during an early stage of brecciation. Ore control was fractures, blowout or chimney. At the blowout a replacement vein 6-18 feet wide lies against fresh diorite, thus an atypical chimney deposit. Further, the chimney is mainly cracked sericitized diorite with ore at joint intersections rather than a breccia. Alteration is sericite with breccia pipes and dacite porphyry; potassic and argillic, lesser propylitization, silicification, and tourmalinization. Host rock is the Copper Creek granodiorite. Related structure is block faulting trending NNW; strong zone of faulting striking E-W and cut by cross-faults striking N60°E and N20°E.

Assay data: 3% by weight total sulfides. In some areas of the mine near the 200 level, the richest ore averages 14% Cu. Where the vein is 50 feet wide (300 LEVEL), only 6 feet is ore grade. The rock is not leached. Where the vein is 30-49 feet wide (200 LEVEL), 18 feet is ore grade near the top, 6-18 foot wide vein is all ore.

Workings include stopes, which are caved, the adit is flooded. Production: The size of the underground workings still open indicates that an appreciable amount of ore was extracted.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

8 valid minerals.

Detailed Mineral List:

Formula: Cu5FeS4
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: CuFeS2
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: PbS
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: MoS2
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: FeS2
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Habit: Radiating groups of slender, prismatic crystals
Reference: Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 401; Simons, F.S. (1964), Geology of the Klondyke quadrangle, Graham and Pinal Cos., AZ: USGS PP 461.
Formula: ZnS
Reference: MRDS database Dep. ID #10039464; MRDS ID #M050121.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Group 9 - Silicates
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:2
AmXp, with m:p = 1:1
AmBnXp, with (m+n):p = 1:1
AmBnXp, with (m+n):p = 1:2
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Unclassified Minerals, Mixtures, etc.
var: Sericite-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
S BorniteCu5FeS4
S GalenaPbS
S MolybdeniteMoS2
S PyriteFeS2
S SphaleriteZnS
S ChalcopyriteCuFeS2
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe BorniteCu5FeS4
Fe PyriteFeS2
Fe ChalcopyriteCuFeS2
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Zn SphaleriteZnS
Mo MolybdeniteMoS2
Pb GalenaPbS


Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Weed, W.H. (1913) Mining and Engineering World: 38: 375-378.
Kuhn, T.H. (1941) Pipe deposits of the Copper Creek area. Economic Geology: 36(5): 512-522.
Simons, F.S. (1964), Geology of the Klondyke quadrangle, Graham and Pinal Cos., AZ: USGS PP 461.
Guthrie, J.O., and Moore, D.G. (1978) The geology of the Copper Creek area, Bunker Hill mining district, Galiuro Mountains, Arizona, in Jenney, J.P., and Hauck, H.R., eds., Proceedings of the Porphyry Copper Symposium, Tucson, Arizona, March 18-20, 1976: Arizona Geological Society Digest: 11: 25-31.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 401.
MRDS database Dep. ID #10039464; MRDS ID #M050121.

Other Databases

USGS MRDS Record:10039464

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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