Shasta King Mine (Lost Desert Mine; Trinity Mine), Mammoth Butte, Backbone District, West Shasta Copper - Zinc Mining District, Klamath Mountains, Shasta County, California, USAi
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Latitude & Longitude (WGS84):
40° 43' 59'' North , 122° 29' 46'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Central Valley (historical) | 4,340 (2015) | 12.0km |
Shasta Lake | 10,159 (2017) | 12.1km |
French Gulch | 346 (2011) | 12.5km |
Keswick | 451 (2011) | 12.6km |
Mountain Gate | 943 (2011) | 14.0km |
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 |
---|---|---|
Shasta Gem & Mineral Society | Redding, California | 19km |
Mindat Locality ID:
92921
Long-form identifier:
mindat:1:2:92921:2
GUID (UUID V4):
b31d6756-2364-47f0-967d-7b5fcea5e7f5
A former Cu-Au-Ag-Zn (trace) mine located in secs. 11 & 12, T33N, R6W, MDM, 3.9 km (2.5 miles) SSW of Mammoth Butte (coordinates of record), on private land (patented). Owned by the Silver King Mining Co. (100.00%), California (1978). Production years were 1908-1909 and 1918-1919. MRDS database stated accuracy for this location is 10 meters.
Mineralization is a replacement sulphide deposit (Deposit model: 184: Massive sulfide, kuroko), hosted in porphyry and rhyolite. The ore body is lenticular at 12.8 meters (and/or 8 meters) thick, 152.4 meters (and/or 70 meters) wide and 179.83 meters (and/or 150 meters) long. The primary mode of origin was hydrothermal and the secondary mode was contact metasomatism. Primary ore control was folding and the secondary control was fracturing.
Controls for ore emplacement included the partial or complete replacement of a thin flow of porphyritic rhyolite that lies between a bed of pyroclastic rock above and a flow of non-porphyritic rhyolite below. Ore solutions were apparently stopped by pre-mineral foliated bands of gouge and sericite.
The ore body replaced the Balaklala Rhyolite. Rocks adjoining the ore body are porphyritic and non-porphyritic varieties of this rhyolite. A bed composed of shaly, rhyolitic tuff, interlayered with fine and coarse volcanic breccia lies immediately above gossan at the surface. It is also found in back of the stopes in the SW part of the mine.
Alteration is local and wall rock alteration is intense (hydrothermal, chloritization, intermediate argillic, propylitic and pyritization). The ore is uniform and structureless in appearance, composed principally of massive pyrite and lesser amounts of chalcopyrite and sphalerite. Local rocks include Paleozoic metavolcanic rocks, unit 1 (Eastern Klamath Mountains).
Local structures include pre-mineral and post-mineral faults. Evidence for pre-mineral age on faults Nos. 3 , 5 & 12 is the pressence of pyrite and pyrite clasts filled with iron oxide, along faults away from the ore body. All faults, except No. 12, show post-mineral movement (horizontal). horizontal movements have been suggested to occur along faults No. 2, 5 & 7 as well as vertically.
Production data are found in: Kinkel, et al (1956): 140.
Analytical data results: 2.5% Cu, 7.61% Zn.
Year: 1919: period: 1908 - 1919: ^2.92% Cu, 1.01 oz/ton Ag, 0.034 oz/ton Au.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Chalcocite Formula: Cu2S |
β Chalcopyrite Formula: CuFeS2 |
β Copper Formula: Cu |
β Galena Formula: PbS |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
β Muscovite var. Sericite Formula: KAl2(AlSi3O10)(OH)2 |
β Pyrite Formula: FeS2 |
β Sphalerite Formula: ZnS |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Copper | 1.AA.05 | Cu |
Group 2 - Sulphides and Sulfosalts | |||
β | Chalcocite | 2.BA.05 | Cu2S |
β | Sphalerite | 2.CB.05a | ZnS |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Galena | 2.CD.10 | PbS |
β | Pyrite | 2.EB.05a | FeS2 |
Group 9 - Silicates | |||
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | var. Sericite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
O | Oxygen | |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Al | Aluminium | |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
S | Sulfur | |
S | β Chalcopyrite | CuFeS2 |
S | β Chalcocite | Cu2S |
S | β Galena | PbS |
S | β Pyrite | FeS2 |
S | β Sphalerite | ZnS |
K | Potassium | |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
K | β Muscovite var. Sericite | KAl2(AlSi3O10)(OH)2 |
Fe | Iron | |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Pyrite | FeS2 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Cu | β Chalcocite | Cu2S |
Cu | β Copper | Cu |
Zn | Zinc | |
Zn | β Sphalerite | ZnS |
Pb | Lead | |
Pb | β Galena | PbS |
Other Databases
Link to USGS MRDS: | 10077588 |
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