| Reference | {Deposit:: GOODWIN, J. G., 1957 ; LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NOS. 3 & 4 ; DIV. OF MINES, P. 449 .}{Deposit:: SAMPSON, R. J. AND TUCKER, W. B., 1942 ; MINERAL RESOURCES OF IMPERIAL COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 38 , NO. 2 ; DIV. OF MINES, P. 128} |