Eureka Mine (Eureka claim), Elephant Head group of claims (Tremaine-Daniels group), Mount Hopkins, Tyndall Mining District, Santa Cruz County, Arizona, USAi
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Latitude & Longitude (WGS84):
31° 43' 1'' North , 110° 55' 26'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Arivaca Junction | 1,090 (2011) | 13.0km |
| Amado | 295 (2011) | 13.3km |
| Tubac | 1,191 (2011) | 16.4km |
| Green Valley | 21,391 (2011) | 16.6km |
| Tumacacori-Carmen | 393 (2015) | 19.2km |
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 183.
Galbraith, F.W. (1947), Minerals of Arizona, Arizona Bureau of Mines Bull. 153: 15.
Keith, Stanton B. (1975), Arizona Bureau of Mines Bull. 191, Index of Mining Properties in Santa Cruz County Arizona: 85 (Table 4).
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 101.
Arizona Bureau of Mines file data.
A Cu-Pb-Zn-Ag-Au mine located in T.20S., R.14E., at the north end of the group of claims. Owned at times, or in part, by Powers & Stockton; Garrett & Parks; the Elephant Head Mining Co. (circa 1915); and the New State Mining Co.
Mineralization is partly oxidized sulfides in a quartz fissure vein and in a sheared and altered zone along rhyolite dikes cutting Laramide quartz monzonite wall rock.
An 18 inch (45 cm) wide quartz vein in the granite dips 80ºN., is somewhat banded, and contains sericite, copper carbonates and sulphides.
Workings include adit and shaft operations with a 1,500 foot long crosscut tunnel. Worked in the early 1900's and in 1913-1914. The group produced some 950 tons of ore averaging about 8% Pb, 3 oz. Ag/T, and minor Cu, Zn, and Au.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Acanthite Formula: Ag2S |
| ⓘ Azurite Formula: Cu3(CO3)2(OH)2 |
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Malachite Formula: Cu2(CO3)(OH)2 |
| ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
| ⓘ Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Acanthite | 2.BA.35 | Ag2S |
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| Group 5 - Nitrates and Carbonates | |||
| ⓘ | Azurite | 5.BA.05 | Cu3(CO3)2(OH)2 |
| ⓘ | Malachite | 5.BA.10 | Cu2(CO3)(OH)2 |
| Group 9 - Silicates | |||
| ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
| ⓘ | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
| H | Hydrogen | |
|---|---|---|
| H | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| H | ⓘ Malachite | Cu2(CO3)(OH)2 |
| H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| H | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| C | Carbon | |
| C | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| C | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | Oxygen | |
| O | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| O | ⓘ Malachite | Cu2(CO3)(OH)2 |
| O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| O | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Al | Aluminium | |
| Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Al | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Si | Silicon | |
| Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| Si | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| S | Sulfur | |
| S | ⓘ Acanthite | Ag2S |
| S | ⓘ Chalcopyrite | CuFeS2 |
| K | Potassium | |
| K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
| K | ⓘ Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Cu | Copper | |
| Cu | ⓘ Azurite | Cu3(CO3)2(OH)2 |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| Cu | ⓘ Malachite | Cu2(CO3)(OH)2 |
| Ag | Silver | |
| Ag | ⓘ Acanthite | Ag2S |
Other Regions, Features and Areas containing this locality
Mexico
- Sierra Madre OccidentalMountain Range
North AmericaContinent
- Sonoran DesertDesert
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mazatzal DomainDomain
- Southern Basin and RangeWide Rift
USA
- Arizona
- Santa Rita MountainsMountain Range
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