Montana Mine (Black Diamond Mine), Empire Mining District, Empire Mountains, Pima County, Arizona, USAi
| Regional Level Types | |
|---|---|
| Montana Mine (Black Diamond Mine) | Mine |
| Empire Mining District | Mining District |
| Empire Mountains | Mountain Range |
| Pima County | County |
| Arizona | State |
| USA | Country |
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Latitude & Longitude (WGS84):
31° 54' 59'' North , 110° 39' 15'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Corona de Tucson | 5,675 (2011) | 12.7km |
| Vail | 10,208 (2011) | 15.6km |
| Pimaco Two | 682 (2011) | 19.4km |
| Mescal | 1,812 (2011) | 22.2km |
| East Sahuarita | 1,622 (2006) | 26.0km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
| Club | Location | Distance |
|---|---|---|
| Old Pueblo Lapidary Club | Tucson, Arizona | 43km |
| Tucson Gem and Mineral Society | Tucson, Arizona | 43km |
‡Ref.: Schrader, F.C. & J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 582: 151-152.
Gillingham, T.E. (1936) Geology of the California mine area, Pima County, Arizona: Tucson, University of Arizona, M.S. thesis, 65 p.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 51.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 119 (Table 4).
MRDS database Dep. ID file #10109611, MRDS ID #M050393.
A former small underground Cu-Ag-Mo mine located in the NW ¼ sec. 31, T.17S., R.17E., about 1½ miles south of the California Mine and 7 miles SW of Pantano. Discovered and located in 1890. Relocated in 1894 and owned by John DeMent & Otto Schley.
Mineralization is a tabular ore body with oxidized copper minerals along a mineralized fault or shear zone, 20 feet (6.1 meters) or more wide, dipping 50W, in brecciated Paleozoic limestone. This fault marks the contact between the dark limestone and the light limestone, both of which are brecciated. An associated rock unit is granite.
At the end of the tunnel the upper 3 feet or more of the ledge, consisting of reddish-brown iron and copper-stained material, dips 50ºW.
The gangue associated with the ore in the lower part of the incline is said to be 6 or 7 feet of limy talcose or kaolin-like material.
Workings include a 30 degree incline tunnel and a 90 foot (27.43 meters), 30º incline. Worked in the 1890's, producing about 10 tons of 9% Cu ore.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Pyrite Formula: FeS2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
List of minerals for each chemical element
| S | Sulfur | |
|---|---|---|
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Pyrite | FeS2 |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
Other Databases
| Link to USGS MRDS: | 10109611 |
|---|
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
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