Mine detail: El Abra

Previously called 'Ojo De GalloConchiViejo Mine Are Mines In Same Area. Oja Del Gallo Mine.Maria Vein'

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Location

Lat / long:

-21.91422, -68.82618

Resource(M)

Primary:	Molybdenum, Copper
Ore:	Antlerite, Atacamite, Bornite, Brochantite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Cuprite, Digenite, Enargite, Galena, Molybdenite, Pyrite, Sphalerite, Tennantite, Tenorite
Gangue:	Limonite, Magnetite, Quartz, Tourmaline
Discovery year:	1540

Production

Operation type:	Unknown
Production size:	Large
Development status:	Past Producer

Geology

Host rock:	Southern Granodiorite, El Abra Pluton;El Abra Diorite;El Abra Quartz Monzonite;El Abra Pluton;
Host type:	Dacite
Associated rock:	Mesa Granite;East Side Granite;Pajonal Diorite
Associated type:	Diorite
Structure:	Falla Oeste (Ns-Trending).
Alteration processes:	Potassic, K-Spar And Biotite; Phyllic, Sericite And Quartz Widespread, Sericite And Kaolinite And Pyrophyllite And Quartz; Propylitic, Poorly Outside Developed Ring; Tourmalinization, Small Irregular Breccias Are Erratically Distributed In The El Abra Diorite And Outside Immediate Area; Supergene Alteration To Depths Of 30 Dm, Kaolinite, Montmorillonite, Zeolites.

References

MRDS	TC40328
DEP	10099525
Reference	{Deposit:: AMBRUS, J., 1977, GEOLOGY OF THE EL ABRA PORPHYRY COPPER DEPOSIT, CHILE: ECONOMIC GEOLOGY, V. 72, NO. 6, P. 1062-1085.}{Deposit:: RUIZ FULLER, CARLOS, 1965, GEOLOGIA Y YACIMIENTOS METALIFEROS DE CHILE, ED. INSTITUTO DES INVESTIGACIONES GEOLOGICAS DE CHILE, EDITORIAL UNIVERSITARIA S.A.}{Deposit:: SUTULOV, ET. AL., 1965, EL COBRE CHILENO, ED. CORPORACION DEL COBRE EDITORIAL UNIVERSITARIA 1975.}{Deposit:: FRUTOS, J. AND PINCHEIRA, M., 1986, FINCHAS METALOGENICAS DE YACIMIENTOS MINERALES METALICOS CHILENOS, IN FRUTOS, J., OYARZUN, J., AND PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P. 841-888.}{Deposit:: RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.}{Deposit:: BORIC, R., DIAZ, F., AND MAKSAEV, V., 1984, COMPLEMENTO MAPA METALOGENICO, II REGION: GERENCIA DE DESARROLLO, SANTIAGO (12 VOLS).}{Deposit:: IIG, 1974, INDEITO #406 & 1890.}{Deposit:: ALVAREZ, O., Y ARACENA, I., 1982, EL ABRA, UNO DE LOS GRANDES YACIMIENTOS DE COBRE AUN NO EXPLOTADAS: REVISTA MINERALES, 37, P. 25-35.}{Deposit:: LITTLE, M.L., 1993, EXPLORATION REVIEW: SOUTH AMERICA: SEG NEWSLETTER, V. 15, OCTOBER 1993, P. 14.}{Deposit:: SILLITOE, R.H., 1988, EPOCHS OF INTRUSION-RELATED COPPER MINERALIZATION IN THE ANDES: JOUR. S. AM. EARTH SCI., 1, P. 89-108.}{Deposit:: LASOTA, P.S., 1992, OPEN-PIT MINING IN CHILE: MINING ENGINEERING, APRIL 1992, P. 307-310.}{Deposit:: LITTLE, M.L., 1994, EXPLORATION REVIEW: SOUTH AMERICA: SEG NEWSLETTER, NO. 16, JANUARY *4, P. 17.}{Other Database:: CIMRI}{Production:: AMBRUS (1977).}{Reserve-Resource:: AMBRUS, 1979; ALVAREZ & ARACENA (1982). LITTLE (1993).}
Reporter	Page, Norman J., Theune, C.T., Williams, William C., Bolm, Karen S.