The Cochrane Mine is a gold and silver mine located in Pennington county, South Dakota at an elevation of 6,001 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: 6,001 Feet (1,829 Meters)
Commodity: Gold, Silver
Lat, Long: 44.0975, -103.71917
Map: View on Google Maps
Cochrane Mine MRDS details
Site Name
Primary: Cochrane Mine
Secondary: Lookout Property
Secondary: Mineral Group
Commodity
Primary: Gold
Primary: Silver
Location
State: South Dakota
County: Pennington
District: Rochford District
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.
Administrative Organization: Black Hills National Forest
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: James Cochrane
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Schists Strike North Northwest And Dip Steeply East
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Gold
Ore: Silver
Comments
Comment (Location): SW 1/4
Comment (Development): ORIGINALLY CONSISTED OF 40 UNPATENTED CLAIMS. 5 CLAIMS WERE RELOCATED BY JAMES COCHRANE IN 1892. ; ECON.COM: 40 - STAMP MILL ABANDONED. 16 TON HUNTINGTON MILL
Comment (Workings): TWO 100 FT SHAFTS, 200 FT OF DRIFTING AND 2 LARGE OPEN CUTS WITH A 40 FT EXPLORATORY SHAFT SANK IN THE SOUTHERN ONE
References
Reference (Deposit): U. S. BUREAU OF MINES, 1954, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688
Reference (Production): U.S. BUREAU OF MINES, 1954, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688
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