| 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:: HEIDENREICH, W. L., AND REYNOLDS, B. M., 1959, NICKEL-COBALT-IRON-BEARING DEPOSITS IN PUERTO RICO: U. S. BUREAU OF MINES REPT. INV. 5532, P. 25, 31.} |