South Dakota · Custer County
Occurrence
Noble Mica
Custer County, South Dakota, United States
Mica
Feldspar
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USGS source ↗
Commodities
Primary
Mica, Feldspar
Commodity type
N
Deposit
Deposit size
N
Orebody form
DIKE
Materials
Ore minerals
Mica
Gangue
Quartz
Geology
Host rock
Pegmatite
Associated rock
Pegmatite,Granite · Pegmatite;Harney Peak Granite
Alteration
Mica Is Air Stained
Economic & production
Development status
Occurrence
Identification
Deposit ID
10055646
MRDS ID
SD02251
Region
NA
Data score
C
Coordinates
43.83329, -103.54223
References
U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707