The Dan Patch Group is a feldspar, mica, and beryllium mine located in Pennington county, South Dakota at an elevation of 4,482 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: 4,482 Feet (1,366 Meters)
Commodity: Feldspar, Mica, Beryllium
Lat, Long: 43.89417, -103.44167
Map: View on Google Maps
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Dan Patch Group MRDS details
Site Name
Primary: Dan Patch Group
Commodity
Primary: Feldspar
Primary: Mica
Primary: Beryllium
Tertiary: Tantalum
Tertiary: Zinc
Location
State: South Dakota
County: Pennington
District: Keystone 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: Consolidated Feldspar Corp.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1905
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: PIPELIKE
Structure
Not available
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Beryl
Ore: Muscovite
Gangue: Quartz
Gangue: Triphylite
Gangue: Cleavelandite
Gangue: Zircon
Gangue: Uraninite
Unknown: Albite
Comments
Comment (Workings): A SINGLE LARGE OPEN PIT.
Comment (Location): NE 1/4, NE 1/4
Comment (Production): BETWEEN JANUARY 1939 AND NOVEMBER 1, 1942
Comment (Development): FOUR UNPATENTED LODE CLAIMS
Comment (Deposit): THE MAIN MASS IS COARSE MICROCLINE-PERTHITE INTERGROWN WITH MASSIVE QUARTZ, ALBITE, AND MUSCOVITE, BERYL, COLUMBITE-TANTALITE, AND SPHALERITE OCCUR WITH THE MUSCOVITE.
Comment (Geology): BERYL IS WHITE, IN LARGE CRYSTALS, MUSCOVITE FORMS IN BOOKS OF IRREGULAR DISTRIBUTION.
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): AM. MINERALOGIST, VOL 56, P. 1-17.
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