The Gertie is a tin mine located in Pennington county, South Dakota at an elevation of 5,079 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: 5,079 Feet (1,548 Meters)
Commodity: Tin
Lat, Long: 43.92278, -103.58333
Map: View on Google Maps
Gertie MRDS details
Site Name
Primary: Gertie
Commodity
Primary: Tin
Tertiary: Feldspar
Tertiary: Mica
Location
State: South Dakota
County: Pennington
District: Hill City 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
Not available
Ownership
Owner Name: Harney Peak Co.
Owner Name: Mr. E. C. Johnson
Production
Year: 1906
Material type: CONC SN
Description: Ap_Grade: ^60% Sn
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
Form: TWO PARALLEL DIKES
Structure
Not available
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Feldspar
Ore: Muscovite
Ore: Cassiterite
Gangue: Tourmaline
Gangue: Quartz
Comments
Comment (Production): ITEM 2 - SEVERAL HUNDRED POUNDS
Comment (Development): 2 PATENTED CLAIMS TOTALING 40 ACRES.
Comment (Deposit): THE SECOND DIKE, 20 FT NORTHWEST VARIES FROM A FEW INCHES TO 4 OR 5 FT IN WIDTH & CAN BE TRACED FOR OVER 0.5 MILE.
Comment (Workings): A 500 FT INCLINED SHAFT WITH CONSIDERABLE DRIFTING & STOPING FROM THE 100 - 200 -, 300 - & 400 FT LEVELS.
Comment (Commodity): CASSITERITE OCCURS IN CRYSTALS UP TO 1 INCH IN LENGTH
Comment (Location): NE 1/4
References
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
Reference (Production): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
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