Mine detail: Evergreen Group

Previously called 'Evergreen No. 1'

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Location

Lat / long: 43.73079, -103.58945

Resource(B)

Primary: Beryllium, Feldspar
Ore: Beryl, Feldspar, Microcline
Gangue: Quartz
Orebody form: DIKES

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer

Geology

Host type:Pegmatite
Associated type:Pegmatite
Tectonic:Southern Black Hills

References

MRDSSD02460
DEP10104266
Reference{Deposit:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 770}{Production:: U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707}
ReporterBarari, Rachel A.