Reference | {Deposit:: GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 394 , P. 420 .}{Deposit:: HEYL, G. R., AND ERIC, J. H., 1948 , NEWTON COPPER MINE, AMADOR COUNTY, CALIFORNIA, COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 49 - 59 .}{Deposit:: FOLIO 11}{Production:: HEYL AND ERIC, 1948 P. 51 , (SEE REF.)} |