Mine detail: Calera Vein, Orcopampa

Previously called 'Orcopampa, Alberto Tunnel, Veins: Santiago North, South Rosa Tudela,Manto VeinRamal 1,2,3,4Ramal Miriam, Laura, Rayo, Santiago Mayor, Santiago, Santa Rosa'

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Location

Lat / long:

-15.09775, -72.33295

Resource(M)

Primary:	Silver, Gold
Secondary:	Copper
Ore:	Acanthite, Bornite, Boulangerite, Calaverite, Chalcopyrite, Coloradoite, Electrum, Enargite, Famatinite, Galena, Gold, Hessite, Marcasite, Miargyrite, Polybasite, Pyrargyrite, Silver, Sphalerite, Stephanite, Stibnite
Gangue:	Barite, Calcite, Gypsum, Hematite, Kaolinite, Quartz, Rhodochrosite, Rhodonite, Sericite
Other material:	Pyrite

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
First production started:	1779

Geology

Host rock:	Manto Tuff;Santa Rosa Formation
Host type:	Rhyolite
Associated rock:	Sarpane Complex
Associated type:	Volcanic Rock (Aphanitic),Dacite,Plutonic Rock
Alteration processes:	Potassic (Adularia, Sericite).

References

MRDS	W029833
DEP	10079731
Reference	{Deposit:: INTERNAT. DIR. OF MINING AND MINERAL PROCES. OPERAT. 1977}{Deposit:: BELLIDO BRAVO,E. AND DE MONTREUIL D., L., 1972, ASPECTOS GENERALES DE LA METALOGENIA DEL PERU, P.78, ED. MINISTERIO DE ENERGIA Y MINAS, SERVICIO DE GEOLOGIA Y MINERIA}{Deposit:: GIBSON, P.C., NOBLE, D.C., AND L.T. LARSON, 1990, MULTISTAGE EVOLUTION OF THE CALERA EPITHERMAL AG-AU VEIN SYSTEM, ORCOPAMPA DISTRICT, SOUTHERN PERU: FIRST RESULTS: ECONOMIC GEOLOGY, V. 85, P. 1504-1519.}{Deposit:: PETERSEN, E.U., PETERSEN, U., AND HACKBARTH, C.J., 1990, ORE ZONING AND TETRAHEDRITE COMPOSITIONAL VARIATION AT ORCOPAMPA, PERU: ECONOMIC GEOLOGY, V. 85, P. 1491-1503.}{Deposit:: U.S. EMBASSY LIMA, 1993, 1992 INSUSTRIAL OUTLOOK REPORT ON MINERALS IN PERU: U.S. DEPARTMENT OF STATE, 7/93.}{Deposit:: NOBLE, D.C. AND VIDAL, C.E., 1994, GOLD IN PERU: SEG NEWSLETTER, APRIL 1994, NO. 17, P. 1, 6-13.}{Deposit:: GIBSON, P.G., NOBLE, D.C., BENAVIDES G., R.B., AND MAYTA, T., 1993, DISCOVERY, DEVELOPMENT, AND PRODUCTION OF A BLIND AG-AU BONANZA IN THE CALERA VEIN, ORCOPAMPA DISTRICT, PERU: INTERNATIONAL GEOLOGIC REVIEW V. 35, P. 780-796.}{Production:: GIBSON AND OTHERS (1990); U.S. EMBASSY LIMA (1993); GIBSON AND OTHERS (1993)}{Reserve-Resource:: GIBSON AND OTHERS (1990), GIBSON AND OTHERS (1993).}
Reporter	Theune, C.T., Page, Norman J.