The Brown Spar is a uranium and fluorine-fluorite 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
Elevation:
Commodity: Uranium, Fluorine-Fluorite
Lat, Long: 40.1225, -105.39806
Map: View on Google Maps
Satelite View
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.
Brown Spar MRDS details
Site Name
Primary: Brown Spar
Commodity
Primary: Uranium
Primary: Fluorine-Fluorite
Location
State: Colorado
County: Boulder
District: Jamestown
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Year: 1943
Material type: F
Description: Ap_Grade: ^62. % Caf2 Ave.
Deposit
Record Type: Site
Operation Category: Producer
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: Diorite
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Not available
Comments
Comment (Production): FLUORSPAR. NO URANIUM PRODUCTION
Comment (Geology): GEOL.DESC: ORE & SULFIDE MIN.: CHIEFLY VIOLET FLUORSPAR, SOME PYRITE AND GALENA
References
Reference (Deposit): GODDARD, COLO. SCI. SOC. PROC., V. 15, NO. 1, PG 35-36, PL. 7
Reference (Deposit): SIMS & SHERIDAN, 1964, USGS BULL. 1159
Reference (Deposit): LOVERING & GODDARD, 1950, USGS P.P. 223, P.278, FIG. 77
Reference (Deposit): 3A) ARGALL, 1949, COLO. SCH. OF MINES QUARTERLY, VOL. 44, NO.2, P.182
Reference (Deposit): 3B) AURAND, 1920, COLO. GEOL. SURV. BULL. 18, P.39
Reference (Deposit): CONSV. DIV. COMP. DATE, 10,62
Colorado Mining Photos
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