| Reference | {Deposit:: ASHLEY, B. E., 1967, THE MINERAL INDUSTRY OF CENTRAL AMERICAN AREAS; COSTA RICA: MINERALS YEARBOOK 1967, V. 4, P. 900.}{Deposit:: U.S. GEOLOGICAL SURVEY, DIRECCION GENERAL DE GEOLOGIA, MINAS E HIDROCARBUROS, UNIVERSIDAD DE COSTA RICA, 1987, MINERAL RESOURCE ASSESSMENT OF THE REPUBLIC OF COSTA RICA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATION SERIES MAP I-1865, 75 P.} |