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Little McGee Creek Mine (White Caps Mine), Tungsten Hills, West Bishop, Bishop District (Tungsten Hills District), Inyo Co., California, USA

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Latitude & Longitude (WGS84):	37° 20' 25'' North , 118° 31' 6'' West
Latitude & Longitude (decimal):	37.34028,-118.51833
GeoHash:	G#: 9qesrj9df
USGS MRDS Record:	10035154
Locality type:	Mine
Köppen climate type:	Dsc : Dry-summer subarctic climate

A former W occurrence/mine located in sec. 13, T7S, R31E, MDM, 6.1 km (3.8 miles) WSW of West Bishop, along Little McGee Creek (8 miles W of Bishop), on National Forest land. MRDS database stated accuracy for this location is 1,000 meters.

Mineralization is hosted in limestone and quartz diorite. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include underground openings with as length of 41.15 meters and comprised of a 135 foot adit.

Production data are found in: Tucker, W. Burling & Reid J. Sampson (1941).

production information: 500 tons of ore was on the dumps, assaying at 1% WO3.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

4 valid minerals.

Detailed Mineral List:

ⓘ Epidote

Formula: {Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)

Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

ⓘ 'Garnet Group'

Formula: X₃Z₂(SiO₄)₃

ⓘ Grossular

Formula: Ca₃Al₂(SiO₄)₃

Reference: Gunnar Färber

ⓘ Quartz

Formula: SiO₂

Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

ⓘ Scheelite

Formula: Ca(WO₄)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	'Quartz'	4.DA.05	SiO₂
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	'Scheelite'	7.GA.05	Ca(WO₄)
Group 9 - Silicates
ⓘ	'Epidote'	9.BG.05a	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
ⓘ	'Grossular'	9.AD.25	Ca₃Al₂(SiO₄)₃
Unclassified Minerals, Rocks, etc.
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃

List of minerals arranged by Dana 8th Edition classification

Group 48 - ANHYDROUS MOLYBDATES AND TUNGSTATES
AXO₄
ⓘ	Scheelite	48.1.2.1	Ca(WO₄)
Group 51 - NESOSILICATES Insular SiO₄ Groups Only
Insular SiO₄ Groups Only with cations in [6] and >[6] coordination
ⓘ	Grossular	51.4.3b.2	Ca₃Al₂(SiO₄)₃
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
ⓘ	Epidote	58.2.1a.7	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO₂ with [4] coordinated Si
ⓘ	Quartz	75.1.3.1	SiO₂
Unclassified Minerals, Rocks, etc.
ⓘ	'Garnet Group'	-	X₃Z₂(SiO₄)₃

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
O	Oxygen
O	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
O	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
O	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
O	ⓘ Quartz	SiO₂
O	ⓘ Scheelite	Ca(WO₄)
Al	Aluminium
Al	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Al	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	Silicon
Si	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Si	ⓘ Garnet Group	X₃Z₂(SiO₄)₃
Si	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Si	ⓘ Quartz	SiO₂
Ca	Calcium
Ca	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
Ca	ⓘ Grossular	Ca₃Al₂(SiO₄)₃
Ca	ⓘ Scheelite	Ca(WO₄)
Fe	Iron
Fe	ⓘ Epidote	{Ca₂}{Al₂Fe³⁺}(Si₂O₇)(SiO₄)O(OH)
W	Tungsten
W	ⓘ Scheelite	Ca(WO₄)

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Holocene - Pliocene

0 - 5.333 Ma

ID: 2875507

Quaternary alluvium and marine deposits

Age: Cenozoic (0 - 5.333 Ma)

Stratigraphic Name: Temescal Formation; Modesto Formation; Victor Formation; Alameda Formation; Aromas Red Sands; Bautista Beds; Brawley Formation; Borrego Formation; Burnt Canyon Breccia; Cabezon Fanglomerate; Campus Formation; Casitas Formation; Chemehuevi Formation; Corcoran Clay; Cushenbury Springs Formation; Dos Picachos Gravels; Dripping Springs Formation; Frazier Mountain Formation; Friant Formation; Harold Formation; Heights Fanglomerate; Hookton Formation; Huichica Formation; La Habra Formation; Manix Lake Beds; Mohawk Lake Beds; Montezuma Formation; Nadeau Gravel; Ocotillo Conglomerate; Orcutt Formation; Pacoima Formation; Pauba Formation; Peckham Formation; Pinto Formation; Resting Springs Formation; Riverbank Formation; Rohnerville Formation; San Dimas Formation; Shoemaker Gravel; Temecula Arkose; Battery Formation; Bay Point Formation; Colma Formation; Lindavista Formation; Lomita Marl; Merritt Sand; Millerton Formation; Palos Verdes Sand; San Pedro Formation; Sweitzer Formation; Timms Point Silt

Description: Alluvium, lake, playa, and terrace deposits; unconsolidated and semi-consolidated. Mostly nonmarine, but includes marine deposits near the coast.

Comments: Original map source: Saucedo, G.J., Bedford, D.R., Raines, G.L., Miller, R.J., and Wentworth, C.M., 2000, GIS Data for the Geologic Map of California, California Department of Conservation, Division of Mines and Geology, CD-ROM 2000-07, scale 1:750,000.

Lithology: Major:{coarse alluvium}, Minor:{fine alluvium}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Cretaceous

66 - 145 Ma

ID: 3192002

Mesozoic intrusive rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)

Tucker, W. Burling & Reid J. Sampson (1941), Recent developments in the tungsten resources of California: California Journal of Mines and Geology; California Division of Mines (Report 37): 37(4): 570.

Norman, L.A. & Richard M. Stewart (1951), Mines and mineral resources of Inyo County, California: California Journal of Mines and Geology (Report 47): 47(1): 198.

Lemmon, Dwight Moulton and Tweto, O.L. (1962) Tungsten in the United States, exclusive of Alaska and Hawaii. USGS Mineral Investigative Resources Map MR-25.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 333 (map 10-1).

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10035154 & 10235941.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060270038.

Lemmon, D.M., Tungsten deposits in the US; Vol. I, unpublished data: 262-263.

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