| Reference | {Deposit:: ALBERS, J. P., 1965 , ECON. GEOL. OF THE FRENCH GULCH QUADRANGLE, SHASTA AND TRINITY COUNTIES, CAL.: CDMG, SPEC. REPT 85 , P 25}{Deposit:: LYDON, P. A. AND OBRIEN, J. C., 1974 , MINES AND MIN. RES. OF SHASTA COUNTY, CAL.: CDMG COUNTY REPT. 6 , 154 P.} |