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Cerro de Pasco

Carbonate-hosted, igneous zinc-lead deposit, 4 of 14 in Peru country (in South America)

Sections of this page: [Geologic] - [Economic] - [Reference]

Geologic Information
CountryPeru
Geographic location:10°40'39"S, 76°15'40"W
(-76.261111, -10.6775)
Geographic context: (click for info)
Deposit typeCAigCarbonate-hosted, igneous
Age of deposit15.4–14.4
Age (m.y.)14.9million years
Area of alteration3.2sq km
Alteration length2km
Alteration width2km
Mineralogyalunite
ankerite
aramayoite
argentite
arsenopyrite
barite
bismuthinite
bournonite
bornite
baumhauerite
cassiterite
chalcocite
chalcopyrite
chlorite
covellite
dickite
dolomite
emplectite
enargite
epidote
galena
gratonite
hematite
hinsdalite
kaolinite
luzonite
magnetite
marcasite
matildite
polybasite
pyrargyrite
pyrite
pyrrhotite
sericite
siderite
silver
sphalerite
stannite
stephanite
stibnite
svanbergite
tetrahedrite/tennantite
vivianite
wolframite
Host rockschert, limestone, siliceous shale (Upper Triassic–Lower Jurassic)
Host rock thickness>700m
Rocks overlying orevolcanic breccia (Tertiary)
Rocks underlying orephyllite, quartzite, shale (Lower-Middle Devonian)
Thickness of underlying rock3000m
Related igneous rocksexplosive breccia, quartz monzonite porphyry (Tertiary)
Tectonostratigraphic settingMesozoic Andean Western platform (trough?) overprinted by Cenozoic magmatic arcs
Deposit types within 5km22c, 25e
Deposit types between 5km and 10km19a, 25e
Geologic map unit-76.2611111111111, -10.6775
Nearby scientific dataFind additional scientific data near this location
Economic Information
Startup date1630
Tonnage225million metric tons
Zinc grade7percent
Lead grade2percent
Copper grade0.44percent
Silver grade240g/t
Gold grade0.27g/t
Reference information
CommentsConcentrator heads: 1955—2.28% Cu, 1961—1.21% Cu. Tonnage and grades calculated on data from Baumgartner and others (2008). Mineral parageneses sequence: (1) massive py1 (with chert beds)+ sl1+gn; (2) po+mt+cp+asp+py2+gn+sl2+wt+sn+cass (250–200 ºC); (3) al+py3+mc+sl3+gn+re+bn+en+tn+Ag- & Bi-minerals (230–196 ºC) (Baumgartner and others, 2002, 2003, 2008; Einaudy, 1977).
References
Baumgartner, R., Fonboté, L., and Bendezù, R., 2003, Low temperature, late Zn-Pb-(Bi-Ag-Cu) mineralization and related acid alteration replacing carbonate rocks at Cerro de Pasco, central Peru, 4 p., www.unge.ch/sciences/terre/mineral/ (last visited December 6, 2003)
Baumgartner, R., Fonboté, L., and Vennemann, T., 2008, Mineral zoning and geochemistry of epithermal polymetallic Zn-Pb-Ag-Cu-Bi mineralization at Cerro de Pasco, Peru: Economic Geology, v. 103, p. 493–537.
Baumgartner, R., Fonboté, L., and Jobin, Y., 2002, Carbonate hosted zinc-lead high-sulfidation mineralization at the Cerro de Pasco deposit, Peru (Abs.): Lima, XI Congreso Peruano de Geologia, Abstracts, p. 75.
Benavides-Caceres, V., 1999, Orogenic evolution of the Peruvian Andes—The Andean cycle, in Skinner, B.J., ed., Geology and ore deposits of the central Andes: Society of Economic Geologists Special Publication, no. 7, p. 61–107.
Cheney, E.S., 1991, Structure and age of the Cerro de Pasco Cu-Zn-Pb-Ag deposit, Peru: Mineralium Deposita, v. 26, p. 2–10.
Einaudi, M.T., 1977, Environment of ore deposition at Cerro de Pasco, Peru: Economic Geology, v. 72, p. 893–924.
Fonboté, L., 1990, Stratabound ore deposits in the Pucára basin, in Fonboté, L., Amschutz, G.C., Cardozo, M., Cedillo, E., and Frutos, J., eds., Stratabound ore deposits in the Andes: Society for Geology Applied to Mineral Deposits Special Publication, v. 8, p. 253–266.
Lacy, W.C., and Hosmer, H.L., 1956, Hydrothermal leaching in central Peru: Economic Geology, v.51, p. 69–79.
Palacios, O.M., and Castillo, M., 1983, Compendio estratigrafico de Jurasico–Cretaceo an el Peru faja costanera y Andina: Boletin de Sociedad Geologica del Peru, no. 71, p. 263–277.
Pazour, D.A., 1980, Cerro de Pasco; Centromin's oldest and largest mine: World Mining, v. 33, no. 4, p. 42–48.
Petersen, U., 1965, Regional geology and major ore deposits of central Peru: Economic Geology, v. 60,, no. 3, p. 407–476.
Silberman, M.L., and Noble, D.C., 1977, Age of igneous activity and mineralization, Cerro de Pasco, central Peru: Economic Geology, v. 72, p. 925–930.
Soler, P., 1986, La province polymétallique des Andes du Péru central—Syntese gîtologique: Chronique de la Recherche Miniere, v. 54, no. 482, p. 39–54.
Ward, H.J., 1978, Environment of ore deposition at Cerro de Pasco—A discussion, Peru: Economic Geology, v. 73, p. 1190–1194.
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