| Reference | {Deposit:: PERSONAL COMMUNICATION WITH MONTANA BUREAU OF MINES &}{Deposit:: GEOLOGY, 1995.}{Deposit:: U.S. BUREAU OF MINES, 1994, DIRECTORY OF PRINCIPAL U.S.}{Deposit:: GEMSTONE PRODUCERS IN 1993; U.S. BUREAU OF MINES MINERAL}{Deposit:: INDUSTRY SURVEYS, P. 34.} |