Alhambra Mine (Allumbra Mine; Wolframite Mine), Stevens Peak, Hope Valley Mining District, Alpine County, California, USAi
| Regional Level Types | |
|---|---|
| Alhambra Mine (Allumbra Mine; Wolframite Mine) | Mine |
| Stevens Peak | Peak |
| Hope Valley Mining District | Mining District |
| Alpine County | County |
| California | State |
| USA | Country |
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Latitude & Longitude (WGS84):
38° 43' 40'' North , 119° 58' 16'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
| Place | Population | Distance |
|---|---|---|
| Kirkwood | 158 (2011) | 9.2km |
| Alpine Village | 114 (2011) | 14.2km |
| Markleeville | 210 (2014) | 16.8km |
| Mesa Vista | 200 (2011) | 17.6km |
| South Lake Tahoe | 21,706 (2017) | 22.9km |
A former Au-Ag-Pb-Cu-Zn-W-Mo mine located in sec. 11, T10N, R18E, MDM, 1.2 km (3,900 feet) ESE of Stevens Peak (coordinates of record), 2.1 km (6,800 feet) NE of Red Lake Peak, and ½ mile NE of Crater Lake (The mine entrance is 2,400 feet S and 2,100 feet E of the NW corner of sec. 11), on National Forest land. Produced in the 1930's and 1950's. Owned by the Alhambra Mining Corp., Gardnerville, Nevada (1977). MRDS database stated accuracy for this location is 100 meters.
First worked for Au in the early 1930's and then for W in the early 1950's.
Mineralization is hosted in mica schist and granodiorite. An associated rock is quartzite. This mine is located in a contact zone between metamorphosed sediments and granitic rocks. Local rocks include pre-Cenozoic metasedimentary and metavolcanic rocks undivided.
This and the adjoining Alpine Mine are on a contact zone between metamorphosed sediments on the W and granitic rocks on the E. The metamorphic rocks are mainly mica schist and quartzite. The granitic rocks are mainly coarse-grained granodiorite. Mineralization zone contains abundant sulfides and small bodies of fine-grained tactite with disseminated scheelite. The schists have been invaded by basic dikes. Surface rock of Red Lake Peak is stained by iron oxide. The general strike of the schistosity is N.
Workings include underground openings with an overall length of 60.96 meters.
There are 2 open SW adits 100 feet long and 100 feet apart vertically.
No production figures available.
Commodity information: $1.80 - $88.00/ton (period values) Au assay with varying amounts of Ag.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
| ⓘ Chalcopyrite Formula: CuFeS2 |
| ⓘ Galena Formula: PbS |
| ⓘ Pyrite Formula: FeS2 |
| ⓘ Pyrrhotite Formula: Fe1-xS Description: Occurs with other sulphides. |
| ⓘ Scheelite Formula: Ca(WO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
| Group 2 - Sulphides and Sulfosalts | |||
|---|---|---|---|
| ⓘ | Chalcopyrite | 2.CB.10a | CuFeS2 |
| ⓘ | Pyrrhotite | 2.CC.10 | Fe1-xS |
| ⓘ | Galena | 2.CD.10 | PbS |
| ⓘ | Pyrite | 2.EB.05a | FeS2 |
| Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
| ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
List of minerals for each chemical element
| O | Oxygen | |
|---|---|---|
| O | ⓘ Scheelite | Ca(WO4) |
| S | Sulfur | |
| S | ⓘ Chalcopyrite | CuFeS2 |
| S | ⓘ Galena | PbS |
| S | ⓘ Pyrite | FeS2 |
| S | ⓘ Pyrrhotite | Fe1-xS |
| Ca | Calcium | |
| Ca | ⓘ Scheelite | Ca(WO4) |
| Fe | Iron | |
| Fe | ⓘ Chalcopyrite | CuFeS2 |
| Fe | ⓘ Pyrite | FeS2 |
| Fe | ⓘ Pyrrhotite | Fe1-xS |
| Cu | Copper | |
| Cu | ⓘ Chalcopyrite | CuFeS2 |
| W | Tungsten | |
| W | ⓘ Scheelite | Ca(WO4) |
| Pb | Lead | |
| Pb | ⓘ Galena | PbS |
Other Databases
| Link to USGS MRDS: | 10006806 |
|---|
Other Regions, Features and Areas containing this locality
North AmericaContinent
North America PlateTectonic Plate
- Shoofly-Olds Ferry DomainDomain
- Sierra Nevada BatholithVolcanic Arc
USA
- Sierra NevadaMountain Range
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