| Reference | {Deposit:: BODENLOS, H. J., STRACZEK, J. A., 1957, BASE METAL DEPOSITS}{Deposit:: CORDILLERA NEGRA, DEPTO. DE ANCASH, PERU: USGS B. 1040, P. 7}{Deposit:: ENGINEERING AND MINING JR., 1975, INTERN. DIRECTORY OF MININ}{Deposit:: MCGRAW HILL, N. Y., P. 256.} |