The Portland Mine and Hercules Mine is a copper mine located in Carbon county, Wyoming at an elevation of 9,731 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: 9,731 Feet (2,966 Meters)
Commodity: Copper
Lat, Long: 41.14917, -106.98694
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.
Portland Mine and Hercules Mine MRDS details
Site Name
Primary: Portland Mine and Hercules Mine
Secondary: Portland & Hercules Mines
Secondary: Portland Mine
Secondary: Hercules Mine
Commodity
Primary: Copper
Tertiary: Palladium
Tertiary: Platinum
Tertiary: Gold
Tertiary: Silver
Location
State: Wyoming
County: Carbon
District: Encampment 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: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
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
Analytical Data: Another sample yielded 85 ppm to 3.2% Cu and 0 to 0.9 ppm Ag.
Analytical Data: Other samples ranged from .001 to 1.0 ppm Au, 0 to 0.30 ppm Pt, .002 to .02 ppm Pd.
Analytical Data: A sample assayed 2.75% Cu.
Materials
Ore: Bornite
Ore: Chalcocite
Ore: Chalcopyrite
Gangue: Siderite
Gangue: Calcite
Gangue: Quartz
Gangue: Hematite
Comments
Comment (Geology): Mines are on sheared contact between metadolomite and phyllite with intrusive red granite to the south.
References
Reference (Deposit): Hausel, 1997, Copper, lead, zinc, molybdenum, and associated metal deposits of Wyoming: Wyoming State Geological Survey Bull. 70, p. 176.
Reference (Deposit): Osterwald and others, 1959, Mineral Resources of Wyoming: Geological Survey of Wyoming Bull. 50, p. 46.
Reference (Deposit): Hausel, 1986, Mineral deposits of the Encampment mining district, Sierra Madre, Wyoming-Colorado: Geological Survey of Wyoming RI-37, p. 22.
Reference (Deposit): Osterwald and others, 1966, Mineral Resources of Wyoming: Geological Survey of Wyoming Bull. 50 [revised ed.], p. 49.
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