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Black King Mine (Black King No. 4; Black King No. 5; Black King No. 5 Claim; Unpatented Claims: Black King No. 1; Evans Claims; Weatherly Claims), Placerville District, Lower San Miguel District, San Miguel Co., Colorado, USA

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Lock Map
Latitude & Longitude (WGS84): 38° 1' 52'' North , 108° 3' 53'' West
Latitude & Longitude (decimal): 38.03111,-108.06472
GeoHash:G#: 9wg0kgmem
Locality type:Mine
Köppen climate type:Dfb : Warm-summer humid continental climate

Commodities (Major) - Copper, Silver, Gold, Uranium; (Minor) - Vanadium; (Trace) - Titanium - Metal, Zinc, Lead, Molybdenum, Chromium, Cobalt
Development Status: Past Producer
Host Rock Unit: Cutler Formation, Pony Express Limestone Member Of Wanakah Formation
Structure: Paradox Basin, Uncompahgre Uplift, San Juan Volcanic Field, San Miguel Mtns, Black King Fault
Host Rock: Sandstone, Limestone, Shale
Tectonic Structure: Colorado Platform

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

Mineral List

22 valid minerals.

Rock Types Recorded

Note: this is a very new system on and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

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

Early Jurassic - Late Triassic
174.1 - 237 Ma

ID: 3185972
Mesozoic sedimentary rocks

Age: Mesozoic (174.1 - 237 Ma)

Lithology: Sandstone-conglomerate

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]

Late Triassic
201.3 - 237 Ma

ID: 2855835
Dolores Fm

Age: Late Triassic (201.3 - 237 Ma)

Stratigraphic Name: Dolores Formation

Description: Red siltstone, shale, sandstone, and limestone-pellet conglomerate

Lithology: Major:{siltstone,shale,sandstone}, Minor:{conglomerate}

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]

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

This page contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hess, F.l., 1913, Notes on the Vanadium Deposits near Placerville, Colorado- USGS Bull. 530, P. 142-156.
Wilmarth, V. R., and Vickers, R. C., 1953, The Robinson and Weatherly uraniferous pyrobitumen deposits near Placerville, San Miguel County, Colorado: U. S. Geol. Survey open-file report, 47 p.
Bush, a.l., and Others, 1959, Areal Geology of the Placerville Quadrangle, San Miguel County, Colorado- USGS Bull. 1072-E.

矿物 and/or 产地  
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