The Green Rock Mine is a tungsten mine located in Larimer county, Colorado at an elevation of 6,040 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: 6,040 Feet (1,841 Meters)
Commodity: Tungsten
Lat, Long: 40.7125, -105.31417
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.
Green Rock Mine MRDS details
Site Name
Primary: Green Rock Mine
Commodity
Primary: Tungsten
Tertiary: Molybdenum
Location
State: Colorado
County: Larimer
District: Stove Prairie Area
Land Status
Land ownership: National Forest
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
Type: Underground
Ownership
Not available
Production
Year: 1942
Description: Ap_Grade: ^Approx 1% Wo3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Front Range Uplift, Sherman Batholith
Type: L
Description: Poudre River Shear Zone, Skin Gulch Shear Zone
Alterations
Not available
Rocks
Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Powellite
Ore: Scheelite
Comments
Comment (Commodity): TWETO (1960) CITES MO (POWELLITE) GENERALLY OCCURRING WITH CACHE LA POUDRE RIVER AREA W DEPOSITS
Comment (Workings): 30-FT SHAFT, TWO SHORT ADITS
Comment (Location): ON WEST SIDE OF HEWLETT GULCH 1.8 MILES NW OF POUDRE PARK. ; INFO FROM LAND.ST :1980
References
Reference (Production): BELSER, 1956, P. 16.
Reference (Deposit): ABBOTT, J.T., 1976, GEOLOGIC MAP OF THE BIG NARROWS QUADRANGLE, LARIMER COUNTY, COLORADO: USGS MAP GQ-1323.
Reference (Deposit): TWETO, OGDEN, 1960, SCHEELITE IN THE PRECAMBRIAN GNEISSES OF COLORADO: ECON. GEOLOGY, V. 55, NO. 7, P. 1406-1428.
Reference (Deposit): BELSER, CARL, 1956, TUNGSTEN POTENTIAL IN CHAFFEE, FREMONT, GUNNISON, LAKE, LARIMER, PARK, AND SUMMIT COUNTIES, COLORADO: USBM IC-7748, P. 16.
Reference (Deposit): COBB, H.S., 1960, TUNGSTEN MINES OF COLORADO: COLORADO METAL MINING FUND BD., P. 37.
Colorado Mining Photos
Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.
