The Green Mountain Mine is a copper mine located in Fremont county, Colorado at an elevation of 8,084 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: 8,084 Feet (2,464 Meters)
Commodity: Copper
Lat, Long: 38.3675, -105.39417
Map: View on Google Maps
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Green Mountain Mine MRDS details
Site Name
Primary: Green Mountain Mine
Secondary: Copper Boy Mine
Commodity
Primary: Copper
Secondary: Silver
Secondary: Gold
Tertiary: Zinc
Tertiary: Molybdenum
Location
State: Colorado
County: Fremont
District: Grape Creek District (Greenhorn District)
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
Type: Unknown
Ownership
Owner Name: Phelps Dodge Corp.
Years: 1980 -
Production
Year: 1954
Time Period: 1914-1954
Mined: 1300.000 mt
Material type: Ag-Au-Cu ore
Description: Cp_Grade: ^12.44% Cu, 1.33 Oz/Ton Ag, 0.11 Oz/Ton Au
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Year First Production: 1925
Year Last Production: 1954
Discovery Year: 1925
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
Model Name: Stratabound Precambrian sulfide, Colorado and Wyoming
Orebody
Not available
Structure
Type: R
Description: Northern Wet Mountains, Canon City Embayment, Thirtynine Mile Volcanic Field
Type: L
Description: Slickensides Strike N 40 W; Green Mountain Fault (Trends Nw); Ilse Fault
Alterations
Alteration Type: L
Alteration Text: Altered Biotite Gneisses; Kaolinization
Rocks
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: AVG CU 2.48%
Analytical Data: CU (0.17-12.0 %), AG (0.1-0.8 OZ/TON), AU (0.01-0.13 OZ/TON), ZN (0.06-6.8 %)
Materials
Ore: Silver
Ore: Hydrozincite
Ore: Gahnite
Ore: Sphalerite
Ore: Gold
Ore: Cuprite
Ore: Chrysocolla
Ore: Covellite
Ore: Malachite
Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Garnet
Gangue: Quartz
Comments
Comment (Commodity): LOCALLY RICH ZONES 12% CU AS MALACHITE IN PLACE; PHELPS DODGE REPORTS 18% PB IN AREA
Comment (Location): SOUTH FROM PARKDALE ON COPPER GULCH ROAD 14 MILES, THEN EAST 5 MILES ON TALBERT GULCH TO MINE ; INFO FROM LAND.ST :(1976)
Comment (Production): MINED 1914-1918, SPORADICALLY IN LATE 1930'S, LAST RECORDED SHIPMENT 1954
Comment (Development): BEST POTENTIAL APPEARS TO BE NEAR SHAFT 3 WHERE ASSAYS AVERAGED $198/TON
Comment (Deposit): COPPER STAINING ALONG FRACTURES AND IN LOCALIZED GOSSAN POCKETS
Comment (Workings): 8 SHAFTS, 5 PITS; SHAFT 1 G. T. 200 FT DEEP, CAVED BELOW LEVEL 1. SHAFT 2 23 FT DEEP. SHAFT 3 22 FT DEEP WITH INCLINED DRIFT 22 FT LONG BEARING N 36 E. SHAFT 4 24 FT DEEP. SHAFT 5 29 FT DEEP, INACCESSIBLE. SHAFT 6 13 FT DEEP. SHAFT 7 36 FT DEEP INCLINED 60 DEGREES TO NW. SHAFT 8 15 FT DEEP, LARGELY CAVED. PIT 1-8 X 8 X 4 FT; PIT 2-5 X 6 X 2.5 FT; PIT 3-6 X 9 X 3 FT; PIT 4-15 X 6 X 2 FT; PIT 5-30 X 6 X 6 FT.
Comment (Deposit): Discovery Year: EARLY 1900'S
References
Reference (Deposit): TAYLOR, R. B., SCOTT, G. R., WOBUS, R. A., AND EPIS, R. C., 1975, RECONNAISSANCE GEOLOGIC MAP OF THE ROYAL GORGE QUADRANGLE, FREMONT AND CUSTER COUNTIES, COLORADO: USGS MAP I-869, 1: 62,500.
Reference (Deposit): RAYMOND, W. H. AND SHERIDAN, D. M., 1980, DATA ON SOME STRATABOUND PRECAMBRIAN DEPOSITS CONTAINING ZINC, COPPER, LEAD, SILVER, AND GOLD IN THE ROYAL GORGE 15-MINUTE QUADRANGLE, COLORADO: USGS OFR 80-833, 8 P.
Reference (Deposit): HEINRICH, E. W., 1981, PRECAMBRIAN TUNGSTEN AND COPPER-ZINC SKARN DEPOSITS OF SOUTH-CENTRAL COLORADO: CGS RESOURCE SERIES 21, P. 81-82.
Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.
Reference (Deposit): Sheridan, D.M., Raymond, W.H., Taylor, R.B., and Hasler, J.W., 1990, Metallogenic map of stratabound exhalative and related occurrences in Colorado: U.S. Geological Survey Miscellaneous Investigations Series Map I-1971, scale 1:1,000,000.
Reference (Reserve-Resource): COKER, 1982
Reference (Production): COKER, 1982
Reference (Deposit): COKER, R. J., 1982, MINERAL RESOURCES OF THE ARKANSAS CANYON PLANNING UNIT WITH SPECIAL EMPHASIS ON THE FORMER GRAPE CREEK WILDERNESS STUDY AREAS AND THE MCINTYRE HILLS WILDERNESS STUDY AREA: US BLM MINERAL REPORT, P. 30-34
Colorado Mining Photos
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