South Dakota · Custer County
Prospect
Keystone Lode
Custer County, South Dakota, United States
Mica
Beryllium
⌖ Show on map
USGS source ↗
Commodities
Primary
Mica
Tertiary
Beryllium
Commodity type
B
Economic & production
Development status
Prospect
Identification
Deposit ID
10202007
Region
NA
Data score
D
Coordinates
43.74276, -103.70367
References
USBM STAFF,1955,REG V,IC 7707,P120PAGE,L.R. ET AL,1953,USGS PROF PAPER 247,P.141