South Dakota · Pennington County
Occurrence

Eureka

Pennington County, South Dakota, United States
MicaBerylliumFeldspar
⌖ Show on mapUSGS source ↗
Commodities
PrimaryMica, Beryllium, Feldspar
Commodity typeB
Deposit
Deposit sizeN
Materials
Ore mineralsBeryl, Feldspar, Muscovite
GangueCleavelandite, Microcline, Quartz, Tourmaline
Geology
Host rockPegmatite
Associated rockPegmatite
Economic & production
Development statusOccurrence
Identification
Deposit ID10055773
MRDS IDSD02520
RegionNA
Data scoreC
Coordinates43.86913, -103.38945
References
USBM CIRC 7707, P. 71