Posco

Arequipa, Peru

GoldSilverCopper

⌖ Show on map USGS source ↗

Commodities

PrimaryGold, Silver

SecondaryCopper

Commodity typeM

Deposit

Deposit sizeU

Ore controlThe Posco Veins Are Well-Defined Fractures That Trend Generally About N70 Deg E, Dip Steeply And Have A Strike Length Of As Much As 3 Km. The Veins Range In Width From A Few Cm To About 1 M. Grade Of Ore Mined Seems To Have Declined Through The Years. According To Alvarado(1905, P. 40-48) The Average Grade In 1905 Was 40-50 Grams Per Ton And Some Ore Contained As Much As 418 Grams. Pflucker (1909) Says That The Average Grade Was 34 Grams Per Ton Over 40 Cm Of Vein And That On The Ros

Materials

Ore mineralsBornite, Chalcopyrite, Chrysocolla, Digenite, Electrum, Galena, Gold, Malachite, Pyrrhotite, Sphalerite, Tetrahedrite

GangueCalcite, Limonite, Quartz, Siderite

Geology

Host rockDiorite · Linga Superunit

StructureThe Rocks Of The Posco Area Are Light Green Hornblende Granodiorite Enclosing An Oval-Shaped Stock Of Fine-Grained Dark Diorite With Numerous Andesite Dikes. This Diorite Stock Trends Ne, Is Some 2-3 Km Long By Less Than 1 Km Wide, And Contains All The Important Gold Veins. The Plutonic Rocks Are Overlain By Andesite Flows And Breccia, Tuff, And Conglomerate...

Tectonic settingAndean Cordillera

AlterationDevelopment Of Clays, Sericitization, Chloritization, Silicification

Economic & production

Development statusProducer

First production1850

Discovery year1700

Identification

Deposit ID10068889

MRDS IDW002161

Alternate namesMina Posco, Veins: Santa Rosario, Sete Bocas, Soledad, San Francisco, Corcel,, Santa Monica, Progreso

RegionSA

Data scoreB

Coordinates-15.96383, -73.18575

References

SIMONS, FRANK, 1960, UNPUBLISHED REPORT, P. 373PERU-MAPA METALOGENETICO, 1969, AND, GUIA PARA EL MAPA METALOGENETICO DEL PERU, SOCIEDAD NACIONAL DE MINERIA Y PETROLEO, LIMA, PERU, NOV. 1969ALVARADO, L.U., 1905, YACIMIENTOS AURIFEROS DE CONDESUYOS Y CAMANA: CUERPO DE ING. DE MINAS DEL PERU BOL., NO. 20, 49 P., P. 40-48PFLUCKER, LUIS, 1909, FILONES AURIFEROS DEL POSCO: SOC. ING. PERU BOL., V. 11, P. 63-70.AGUILAR, REVOREDO, 1941, CURSO DE GEOLOGIA ECONOMICA DE YACIMIENTOS MINERALES: ESCUELA NAC. ING., INST. NAC. POLITECNICO SUPERIOR, 99 P., P. 49-50.RAIMONDI, ANTONIO, 1887, MINAS DE ORO DEL PERU: ANALES ESCUELA CONSTR. COVILES Y DE MINAS, V. 6, 96 P., P. 76-77DIAZ AGUILAR, J., FLORES PINEDA, G. AND YRIGOYEN Y.R., 1981INFORME TECNICO MINA "POSCO": BANCO MINERO DEL PERU; COD.B5294.POLANCO VILLARROEL, M., AQUIJE FLORES, J.; SICCHA CASTILLO, V., AND GARAY PENA, L., 1990, INFORME TECNICO COMPANIA MINERA POSCO S.A.: BANCO MINERO DEL PERU; COD.B7504.FLORES T. R., 1983, INFORME TECNICO DE CONTROL MINA "POSCO": BANCO MINERO DEL PERU; COD.B5487.FLORES T. R., 1983, INFORME TECNICO DE CONTROL MINA "POSCO": BANCO MINERO DEL PERU; COD.B5832.FLORES T. R., 1983, INFORME TECNICO DE CONTROL MINA "POSCO": BANCO MINERO DEL PERU; COD.7785.SALAS, A. A., 1952, ESTUDIO TECNICO ECONOMICO DE LAS MINAS DE LA COMPANIA MINERA "POSCO" S.A.: BANCO MINERO DEL PERU; COD.B2266.VASQUEZ ROSAS, H., SOTILLO PALOMINO, C., 1941, INFORME DE LA REGION MINERA DE POSCO Y VALORIZACION DE LAS PLANTAS DE BENEFICIO DE LA EMPRESA AURIFERA RIO GRANDE S.A.: BANCO MINERO DEL PERU; COD.B2265.FLORES T. R., 1980, INFORME TECNICO DE CONTROL MINA "POSCO": BANCO MINERO DEL PERU; COD.B6012.GALVAN, C., 1965, INFORME TECNICO CIA. MINERA POSCO: BANCO MINERA DEL PERU; COD.B7135.ROSE KAMP, E., 1953, INFORME RESERVAS MINERALES DE LA MINA POSCO: BANCO MINERO DEL PERU; COD.B2267.ZUNIGA G. E., 1954, INFORME RESERVAS MINERALES DE LA MINA POSCO: BANCO MINERO DEL PERU; COD.B2268.ESTUDIO TECNICO ECONOMICO MINA "POSCO", 1952: BANCO MINERO DEL PERU, COD.B4643.FLORES T. R., 1982, INFORME TECNICO DE INSPECCION DE CONTROL CIA. MINERA POSCO S.A.: BANCO MINERO DEL PERU; COD.B4505.FLORES T. R., 1981, INFORME TECNICO DE CONTROL CIA. MINERA POSCO S.A.: BANCO MINERO DEL PERU; COD.B2994.FLORES T. R., 1985, INFORME TECNICO DE CONTROL CIA. MINERA POSCO S.A.: BANCO MINERO DEL PERU; COD.B3567.FLORES T. R., 1983, INFORME TECNICO DE CONTROL CIA. MINERA POSCO S.A.: BANCO MINERO DEL PERU; COD.B3247.CARTA GEOLOGICO NACIONAL, 1993, INGEMMET.1960 COMPILE FRANK SIMONS, UNPUB. REPF. SIMONS, 1960, UNPUB. REP.METALLOGENIC MAPS OF PERU. 1969, 1972