Reference | {Deposit:: PAGE, LINCOLN R, ET AL, 1953, PEGMATITE INVESTIGATIONS, 1942}{Deposit:: BLACKS HILLS, SOUTH DAKOTA. USGS PROP PAPER 247, P163-170.}{Deposit:: LINCOLN, FRANCIS C, 1937, THE MINING INDUSTRY OF SOUTH DAKOT}{Deposit:: SOUTH DAKOTA SCH OF MINES BULL 17, P31-2.} |