| Reference | {Deposit:: COX, DENNIS P., AND BRIGGS, REGINALD P., 1973, METALLOGENIC MAP OF PUERTO RICO: U.S. GEOLOGICAL SURVEY, MISCELLANEOUS GEOLOGIC INVESTIGATIONS MAP I-721, ACCOMPANIED BY EXPLANATORY PAMPHLET, 6 P.}{Deposit:: NELSON, A. E., 1967, GEOLOGIC MAP OF THE COROZAL QUADRANGLE, PUERTO RICO: U.S. GEOLOGICAL SURVEY MISC. GEOL. INV. MAP I-473.} |