Mine detail: Helen Beryl

Previously called 'Sweepstakes Beryl'

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Location

Lat / long: 43.71276, -103.69697

Resource(M)

Tertiary: Niobium (Columbium), Tantalum

Production

Operation type: Surface-Underground
Development status: Prospect

Geology

References

MAS460330022
DEP10299140
ReporterSouth Dakota School of Mines