Producer

Buena Esperanza

Chile
Copper
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper
Commodity typeM
Deposit
Deposit sizeL
Orebody formTABULAR, ANYGDALOIDAL LAVA FLOWS CONTAINING POCKETS OF BRECCIATED VOLCANIC ROCKS SEVERAL METERS THICK
Ore controlGenerally Concentrated At Tops Of Flows In Amygdules <6mm. Microscopic Studies Indicate That Mineralization Was Syngenetic With Extrusion Of Lava.
Materials
Ore mineralsAtacamite, Bornite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Covellite, Digenite, Malachite
GangueCalcite, Gypsum, Hematite, Plagioclase, Pyrite, Quartz, Sericite
Geology
Host rockSandstone,Andesite,Basalt · La Negra Formation;Metamorphosed Sedimentary Sequence
Associated rockAndesite,Basalt · La Negra Formation;Andean Diorite Complex
StructureNorth-Trending Broad Open Folds. Faults Of Varying Lengths And Displacements And Plutonic Masses., Faults At N90e, 90 Fractures Trend N40e. Deposit Terminated On North By Post-Mineral, Vertical, East-Striking Fault.
Tectonic settingAndean Coridillera And Batholith
AlterationAlbitization, Chloritization, And Carbonitization; Deposit Located Below Intense Epidotization; Weak Sericitization. No Evidence Of Hydrothermal Alteration.
Economic & production
Development statusProducer
First production1954
Discovery year1954
Identification
Deposit ID10106983
MRDS IDTC03517
Alternate namesBuena Esperanza Cu Mine
RegionSA
Data scoreA
Coordinates-22.18255, -70.20955
References
FRUTOS, J. AND PINCHEIRA, M., 1986, FICHAS METALOGENICAS DE YACIMEINTOS MINERALES METALICOS CHILENOS, IN FRUTOS, J., OYARZUN, J., AND PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P. 841-888.RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.CAMUS, F., 1986, LOS YACIMIENTOS ESTRATOLIGADOS DE CU, PB-ZN, Y AG DE CHILE, IN FRUTOS, J., OYARZUN, J., PINCHEIRA, M., EDS., GEOLOGIA Y RECURSOS MINERALES CHILENOS: UNIVERSIDAD DE CONCEPCION, CONCEPCION, P.548-635.LOSERT, J., 1973, GENESIS OF COPPER MINERALIZATION AND ASSOCIATED ALTERATIONS IN THE JURASSIC VOLCANIC ROCKS OF THE BUENA ESPERANZA MINING AREA: UNIVERSIDAD DE CHILE, PUBLIC NO. 40, 64 P.LOSERT, J., 1974, ALTERATION AND ASSOCIATED COPPER MINERALIZATION IN THE JURASSIC VOLCANIC ROCKS OF THE BUENA ESPERANZA MINING AREA, ANTOFAGASTA PROVINCE, NORTHERN CHILE: UNIVERSIDAD DE CHILE, V. 41, P. 51-85.PALACIOS, C. AND DEFINIS, 1981, PETROLOGIA DEL YACIMIENTO BUENA ESPERANZA, II REGION NORTE DE CHILE: FIRST COLOQUIO SOBRE VOLCANISMO Y METALOGENESIS, UNIVERSIDAD DEL NORTE, P. 82-91.SASAKI, A., ULRIKSEN, C., SATO, K., AND ISHIHARA, S., 1984, SULFUR ISOTOPE RECONNAISSANCE OF PORPHYRY COPPER AND MANTO-TYPE DEPOSITS IN CHILE AND THE PHILLIPPINES: BULL. GEOLOGICAL SURVEY JAPAN, V. 35, P. 615-622.DEFINIS, 1980, PETROLOGIA, ALTERACION, Y METALOGENESIS DEL INTRUSIVO BASICO BUENA ESPERANZA, TOCOPILLA, II REGION, CHILE: TESIS DE GRADO, UNIVERSIDAD DEL NORTE, 67 P.ROGERS, G., 1985, A GEOCHEMICAL TRAVERSE ACROSS THE NORTH CHILEAN ANDES: PH.D. THESIS, THE OPEN UNIVERSITY, LONDON.MINING MAGAZINE, JANUARY, 1990.BORIC, R., DIAZ, F., AND MAKSAEV, V., 1984, COMPLEMENTO MAPA METALOGENICO, II REGION: GERENCIA DE DESAROLLO, SANTIAGO, (12 VOLS.).RUIZ F., CARLOS, 1965, GEOLOGIA Y YACIMIENTOS METALIFEROS DE CHILE: INST. INV. GEOL. CHILE, P. 196 (SPANISH)KNOWLES, P.H., AND OTHERS, 1964, EXPLORACION DE MINERALES RADIOACTIVOS EN CHILE, PROV. TARAPACA AND ANTOFAGASTA: CHILE INST. INV. BOL. 18, PT. I, P. 33-37 (SPANISH).1961 COMPILE UNIV. OF CHILE1964 RECON U.S. ATOMIC ENERGY COMM. & INSTITUTO INVESTIGACIONES GEOLOGICAS, CHILE.CIMRIRUIZ AND PEEBLES, 1988; BORIC ET AL., 1984. MINING MAGAZINE, JANUARY, 1990.BORIC, ET AL., 1984.