Reference | {Deposit:: SIMONS, 1964, USGS PP 461}{Deposit:: WEED, 1913, MIN & ENG WORLD, V. 38, P. 375-378}{Deposit:: GUTHRIE & MOORE, 1978, AZ GEOL SOC DIGEST, V. 11, P. 25}{Deposit:: KUHN, 1941, ECON. GEOL. V. 36, NO. 5, P. 522}{Production:: SIMONS, 1954} |