Tungstar Mine (Crawford; Tungstar Mine-Greeve orebody; Greve orebody; Mount Tom), Scheelite, Bishop Mining District (Tungsten Hills Mining District), Inyo County, California, USAi
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Latitude & Longitude (WGS84):
37° 22' 60'' North , 118° 43' 0'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Round Valley | 435 (2011) | 12.1km |
Swall Meadows | 220 (2017) | 15.1km |
Mesa | 251 (2011) | 15.9km |
Sunny Slopes | 182 (2017) | 21.0km |
West Bishop | 2,607 (2011) | 23.2km |
Mindat Locality ID:
79542
Long-form identifier:
mindat:1:2:79542:0
GUID (UUID V4):
81d5fefd-0288-453a-97eb-7218a6ceb8b2
A former W mine located in secs. 4, 9 & 15, T7S, R30E, MDM, 3.6 km (2.2 miles) W of Scheelite and E of Lower Morgan Lake (on the steep W shoulder of Mt Tom), in the Sierra Nevada, on National Forest wilderness land (John Muir Wilderness). MRDS database stated accuracy for this location is 10 meters.
Mineralization is hosted in limestone, hornfels, and quartz diorite. The ore body is irregular with a near vertical dip, depth-to-bottom of 106.68 meters, width of 12.19 meters and a length of 30.48 meters. Controls for ore emplacement included a contact zone. The Greene ore body at depth was smaller than at the surface. Constriction may only be local. The Stevens ore body 170 feet E of the Greene body is 200 feet long and 20 to 90 feet wide. Quartz diorite is variable, a coarse-grained variety appears intrusive, but medium- and fine-grained varieties may represent altered volcanic rocks. Local rocks include Carboniferous marine rocks, unit 7 (Bishop).
Workings include surface and underground openings comprised of an 800 foot adit and an inclined winze 190 feet deep. A 2-compartment vertical shaft was sunk near the adit portal with crosscuts on 2 levels. Another adit and open pit are at the Stevens ore body.
Production statistics: Years: 1944-1945: accurate - 3 weight per cent WO3.
Ore low-grade on bottom level. Little production from the Stevens ore body since it contained only 0.5% WO3.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
ⓘ Phlogopite Formula: KMg3(AlSi3O10)(OH)2 |
ⓘ Scheelite Formula: Ca(WO4) |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 7 - Sulphates, Chromates, Molybdates and Tungstates | |||
---|---|---|---|
ⓘ | Scheelite | 7.GA.05 | Ca(WO4) |
Group 9 - Silicates | |||
ⓘ | Phlogopite | 9.EC.20 | KMg3(AlSi3O10)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
O | Oxygen | |
O | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
O | ⓘ Scheelite | Ca(WO4) |
Mg | Magnesium | |
Mg | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Al | Aluminium | |
Al | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
K | Potassium | |
K | ⓘ Phlogopite | KMg3(AlSi3O10)(OH)2 |
Ca | Calcium | |
Ca | ⓘ Scheelite | Ca(WO4) |
W | Tungsten | |
W | ⓘ Scheelite | Ca(WO4) |
Other Databases
Link to USGS MRDS: | 10008715 |
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References
(n.d.) Minerals Availability System (MAS), U.S. Bureau of Mines.file ID #0060270697