Madrigal

U.S.B.M. MINERALS YEARBOOK 1970 PERU PREPRINTU.S.B.M. MINERALS YEARBOOK 1969 VOL. 4 P. 580PERU-MAPA METALOGENETICO, 1969, AND, GUIA PARA EL MAPA METALOGENETICO DEL PERU, SOCIEDAD NACIONAL DE MINERIA Y PETROLEO, LIMA, PERU, NOV. 1969MOSIER AND OTHERS, 1986, GEOLOGIC AND GRADE-TONNAGE INFORMATION ON TERTIARY EPITHERMAL PRECIOUS- AND BASE-METAL VEIN DISTRICTS ASSOCIATED WITH VOLCANIC ROCKS: U.S. GEOLOGICAL SURVEY BULLETIN 1666, 39 P.COMMUNIQUE, AMERICAN EMBASSY, PERU.ENGINEERING & MINING JOURNAL, 1984, P. 331.ENGINEERING & MINING JOURNAL, 1985, MARCH, P. 326, P. 291.CAVANAGH, J., AND GLOVER, M., 1991, THE PERU REPORT'S GUIDE TO MINES AND MINERS IN PERU: LIMA, PERU, REPORTING SERVICES EDITORIALES S.R.L., P. 185-187.NOBLE, D.C. AND VIDAL, C.E., 1994, GOLD IN PERU: SEG NEWSLLETTER, APRIL 1994, NO. 17, P. 1, 6-13.CIMRILA MINERIA EN EL PERU, ANUARIO MINERO COMERCIAL 1977; AMERICAN EMBASSY, PERU; E&MJ (1984, 1985); CAVANAGH AND GLOVER (1991)1972 ESTIMATE MADE BY GOUDARZI. DEPOSIT SIZE ESTIMATE MADE BY MOSIER AND OTHERS, 1986.