Reference | {Deposit:: FILES OF THE CORTEZA TERRESTRE (SURFACE MINING PERMITS OFFICE), PUERTO RICO DEPARTMENT OF NATURAL RESOURCES, 1991.}{Deposit:: GLOVER, LYNN, III, AND MATTSON, P.H., 1973, GEOLOGIC MAP OF THE RIO DESCALABRADO QUADRANGLE, PUERTO RICO: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATIONS MAP I-735, SCALE 1:20,000.} |