The Pleasant Valley Mine is a feldspar mine located in Custer county, South Dakota at an elevation of 5,400 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: 5,400 Feet (1,646 Meters)
Commodity: Feldspar
Lat, Long: 43.72167, -103.68083
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.
Pleasant Valley Mine MRDS details
Site Name
Primary: Pleasant Valley Mine
Commodity
Primary: Feldspar
Secondary: Beryllium
Location
State: South Dakota
County: Custer
District: Custer District
Land Status
Administrative Organization: Black Hills
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: C. A. Parker, Jr.
Home Office: Custer, S.D.
Owner Name: George Bland, Jr.
Years: 1943 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1943
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: DIKE
Structure
Not available
Alterations
Not available
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Feldspar
Ore: Beryl
Gangue: Quartz
Gangue: Mica
Gangue: Tourmaline
Gangue: Columbite
Gangue: Tantalite
Comments
Comment (Deposit): THE DIKE NARROWS TO 45 FT. THE MINE IS LOCATED ON A FRACTURE FILLING BODY THAT STRIKES AT RIGHT ANGLES TO A LARGER PEGMATITE THAT STRIKES N65E.
Comment (Workings): THERE ARE SEVERAL CUTS AND A SHALLOW SHAFT.
Comment (Commodity): BERYL IN SCATTERED CRYSTALS ARE FROM 0.5 TO 12 INCHES IN DIAMETER. IT IS RELATIVELY PURE BUT THE SMALL AVERAGE SIZE OF LESS THAN 2 INCHES PRECLUDES SORTING.
References
Reference (Deposit): ROBERTS, W. L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18.
Reference (Deposit): USGS PP 247, P. 177-178.
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707.
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