| Reference | {Deposit:: FISHER D J PEGMATITES OF THE CUSTER DISTRICT S DAKOTA GEOL S}{Deposit:: EPT INVES NO 44 1942 PP 17-4}{Deposit:: PAGE LINCOLN R ET AL PEGMATITE INVESTIGATIONS 1942-45 BLACK}{Deposit:: DAKOTA U S GEO SURV PROF PAPER 247 P 58,131 P121}{Deposit:: REDDEN J A GEOLOGY OF THE BERNE QUADRANGLE BLACK HILLS S DAK}{Deposit:: GEOL SURV BULL 1015-C 1955 P 40} |