The Lake Fork Gulch Foster Ranch is a tungsten mine located in Gilpin 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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Lake Fork Gulch Foster Ranch MRDS details
Site Name
Primary: Lake Fork Gulch Foster Ranch
Commodity
Primary: Tungsten
Location
State: Colorado
County: Gilpin
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
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: Gneiss
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Scheelite
Comments
Comment (Deposit): THE FOSTER RANCH IS 4 MILES SE OF BLACKHAWK. THE LIME-SILICATE ROCK IS INTERBANDED WITH FOLDED HORNBLENDE GNEISS AND QUARTZ MONZONITE GNEISS, AND CUT BY NUMEROUS DIKES OF PEGMATITE AND GNEISSIC APLITE. BANDS ARE A FEW INCHES TO A FEW FEET THICK AND A FEW EXPOSURES CONTAIN SEVERAL PERCENT OF WO3 (REF. NO. 1)
References
Reference (Deposit): LEMMON, D.M., UNPUBLISHED DATA.
Reference (Deposit): LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.
Colorado Mining Photos
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