The Black Cloud is a uranium mine located in Boulder county, Colorado.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Black Cloud MRDS details
Site Name
Primary: Black Cloud
Commodity
Primary: Uranium
Location
State: Colorado
County: Boulder
District: Gold Hill
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Granite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Pitchblende
Comments
Comment (Production): 1500 FT DRIFTS. MOST OF BLACK CLOUD OUTPUT MADE BEFORE 1910
Comment (Geology): GEOL.DESC: ASSOC. MINERALS: QTZ, PYRITE, GOLD, GALENA, SPHALERITE
References
Reference (Deposit): SIMS & SHERIDAN, 1964, USGS BULL. 1159.
Reference (Deposit): LOVERING & GODDARD, 1950, USGS PP 223, PL. 23
Reference (Deposit): CONSV. DIV. COMP. DATE, 1,62
Colorado Mining Photos
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