The Dubuque and Royal Flush Claims is a mica, feldspar, and beryllium 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: Mica, Feldspar, Beryllium
Lat, Long: 43.74139, -103.69333
Map: View on Google Maps
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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.
Dubuque and Royal Flush Claims MRDS details
Site Name
Primary: Dubuque and Royal Flush Claims
Commodity
Primary: Mica
Primary: Feldspar
Primary: Beryllium
Location
State: South Dakota
County: Custer
District: Custer District
Land Status
Administrative Organization: Black Hills
Holdings
Not available
Workings
Type: Surface
Ownership
Owner Name: G. Behren, William Nevin And Mrs. Otto Newberry
Home Office: Custer, S.D.
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
Form: DIKELIKE
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: Mica
Ore: Beryl
Gangue: Albite
Gangue: Quartz
Gangue: Tourmaline
Gangue: Microcline
Comments
Comment (Commodity): MOST MICA IS SUITABLE FOR SCRAP.
Comment (Production): PRODUCTION DATA FOR DUBUQUE AND ROYAL FLUSH CLAIMS.
Comment (Deposit): BOTH CLAIMS ARE IN THE SAME PEGMATITE. THE DUBUQUE IS NORTH OF THE ROYAL FLUSH. THE DUBUQUE IS UNPATENTED AND THE ROYAL FLUSH IS PATENTED. TWO ZONES PRESENT. AVERAGE THICKNESS IS 8 FT. DIP IS 50-65 NE. DIP OF SCHIST IS 40-65 SW.
Comment (Workings): FIVE SHALLOW CUTS ON THE DUBUQUE. THE ROYAL FLUSH HAS TWO PITS. LARGEST PIT DIMENSIONS LISTED ABOVE.
References
Reference (Deposit): USBM INFO CIRC 7707, P. 118.
Reference (Deposit): USGS PP 247, P. 100-101.
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