| Reference | {Deposit:: BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA, PT 2, 1955, USBM IC}{Deposit:: P 56.}{Deposit:: HESS, FRANK L, 1909, TIN, TUNGSTEN AND TANTALUM DEPOSITS OF}{Deposit:: DAKOTA. USGS BULL 380, P 139-40.}{Deposit:: PAGE, LINCOLN R, ET AL, 1953, PEGMATITE INVESTIGATIONS, 1942}{Deposit:: BLACK HILLS, SOUTH DAKOTA. USGS PROF PAPER 247, P 136.} |