| Reference | {Deposit:: BODENLOS, A. J., STRACZEK, J. A., 1957, BASE METAL DEPOSITS}{Deposit:: CORDILLERA NEGRA, DEPTO. DE ANCASH, PERU: USGS B. 1040, PLAT}{Deposit:: ENGINEERING AND MINING JOURNAL, 1975, INTERN. DIRECTORY OF M}{Deposit:: MCGRAW HILL, N. Y., P. 182.} |