| Reference | {Deposit:: FILES OF THE CORTEZA TERRESTRE (SURFACE MINING PERMITS OFFICE), PUERTO RICO DEPARTMENT OF NATURAL RESOURCES, 1991.}{Deposit:: CURET, A.F., 1986, GEOLOGIC MAP OF THE MAYAGUEZ AND ROSARIO QUADRANGLES, PUERTO RICO: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATIONS MAP I-1657, SCALE 1:20,000.} |