South Dakota · Pennington County
Occurrence
Maderposson
Pennington County, South Dakota, United States
Feldspar
Beryllium
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USGS source ↗
Commodities
Primary
Feldspar, Beryllium
Commodity type
B
Deposit
Deposit size
N
Orebody form
DIKE
Materials
Ore minerals
Beryl, Feldspar
Geology
Host rock
Pegmatite
Associated rock
Pegmatite · Pegmatite
Economic & production
Development status
Occurrence
Discovery year
1941
Identification
Deposit ID
10055669
MRDS ID
SD02279
Region
NA
Data score
C
Coordinates
43.86246, -103.36973
References
U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 BUREAU OF MINES INFORMATION CIRCULAR 7707