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. 16, 31.}{Deposit:: DUTTON, C. E., 1955, IRON ORE DEPOSITS OF NORTH AMERICA AND THE WEST INDIES, IN UNITED NATIONS DEPT. ECON. AND SOCIAL AFFAIRS SURVEY OF WORLD IRON RESOURCES; OCCURRENCE, APPRAISAL, AND USE: NEW YORK, P. 206.} |