| Reference | {Deposit:: ALBERS, J.P., 1965 , ECONOMIC GEOLOGY OF THE FRENCH GULCH QUADRANGLE, SHASTA AND TRINITY COUNTIES, CAL.: CDMG, SPECIAL REPT. 85 , 43 P.}{Deposit:: CRAWFORD, J.J., 1894 , TWELFTH REPT. OF THE STATE MINERALOGIST: CMB REPT. 12 , P. 253}{Deposit:: LYDON, P.A. AND *RIEN, J.C., 1974 , MINES AND MIN. RES. OF SHASTA COUNTY, CAL.: CDMG, COUNTY REPT. 6 , 154 P.} |