The Highland Mine is a feldspar, beryllium, and mica mine located in Custer county, South Dakota at an elevation of 5,600 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: 5,600 Feet (1,707 Meters)
Commodity: Feldspar, Beryllium, Mica
Lat, Long: 43.76639, -103.67806
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.
Highland Mine MRDS details
Site Name
Primary: Highland Mine
Secondary: Ross Mine
Secondary: John Ross Lode
Commodity
Primary: Feldspar
Primary: Beryllium
Primary: Mica
Secondary: Tantalum
Tertiary: Lithium
Location
State: South Dakota
County: Custer
District: Custer 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: New York Holding Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1907
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: ELLIPTICAL
Structure
Not available
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Beryl
Ore: Albite
Ore: Muscovite
Ore: Lithiophilite
Ore: Microcline
Gangue: Uranophane
Gangue: Apatite
Gangue: Cassiterite
Gangue: Uraninite
Gangue: Pyrrhotite
Gangue: Zircon
Gangue: Tourmaline
Gangue: Pyrite
Gangue: Vivianite
Gangue: Quartz
Gangue: Garnet
Comments
Comment (Location): NE 1/4, NE 1/4, NE 1/4
Comment (Workings): A LARGE OPEN PIT, AN INCLINED SHAFT AND STOPE, A 90 FT ADIT AND A SMALL PROSPECT PIT. THE OPEN PIT IS 65 FT DEEP. THE INCLINED SHAFT IS 46 FT DEEP.
Comment (Deposit): 3 ZONES WITH A POSSIBLE CENTRAL QUARTZ MASS
References
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
Reference (Deposit): FISHER, D.J., 1945, PRELIMINARY REPORT OF SOME PEGMATITES NEAR CUSTER, SOUTH DAKOTA GEOLOGICAL SURVEY REPORT OF INVESTIGATIONS 50
Reference (Deposit): ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18
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