The Big Six Mine is a tungsten mine located in Boulder county, Colorado at an elevation of 9,199 feet.
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: 9,199 Feet (2,804 Meters)
Commodity: Tungsten
Lat, Long: 39.9639, -105.51250
Map: View on Google Maps
Satelite View
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Mine Description
Ore: Ore shoot had a stope length of about 40 ft on each level; plunged northeast; localized where at least one wall is aplite. Three drill holes showed a little ore at depths of 20 to 30 ft below bottom level; some underhand stoping done, but vein barren where cut by a hole 65 ft below level (not shown on map). Ore in main stopes consisted of veinlets of ferberite in brecciated horn quartz and sheeted aplite and schist. Ore mined in 1943 assayed about 1 percent WO3.
History and production: Mine owned by Crow Estate; worked by many different lessees at intervals from 1915 or earlier up to 1943, when operated by Boulder Tungsten Mills, Inc. Production not known; probably less than 1,000 units of W03.
Source: Geology and Ore Deposits of the Boulder County Tungsten District Colorado. USGS Professional Paper 245, 1953
Big Six Mine MRDS details
Site Name
Primary: Big Six Mine
Commodity
Primary: Tungsten
Tertiary: Gold
Tertiary: Silver
Location
State: Colorado
County: Boulder
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: 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
Not available
Analytical Data
Not available
Materials
Not available
Comments
Not available
References
Reference (Deposit): MINE MAP REPO # 402551, 405271 OWN/ LLOYD P MOCK
Colorado Mining Photos
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