| Lat / long: | -34.08914, -70.33783 |
| Primary: | Copper, Molybdenum |
| Secondary: | Gold, Silver |
| Ore: | Bornite, Brochantite, Chalcocite, Chalcopyrite, Chrysocolla, Copper, Covellite, Cuprite, Enargite, Ferrimolybdite, Galena, Huebnerite, Malachite, Molybdenite, Olivenite, Pyrite, Sphalerite, Stibnite, Tennantite, Tenorite |
| Gangue: | Anhydrite, Ankerite, Barite, Biotite, Calcite, Chlorite, Gypsum, Hematite, Limonite, Magnetite, Quartz, Rhodochrosite, Sericite, Tourmaline |
| Orebody form: | CHIMNEY |
| Discovery year: | 1706 |
| Operation type: | Unknown |
| Production size: | Large |
| Development status: | Producer |
| First production started: | 1906 |
| Host rock: | Lower Farellones Formation |
| Host type: | Andesite |
| Associated rock: | Lampophyre Dike;;Branden Formation;;Upper Farellones Formation;Middle Farellones Formation;Lower Farellones Formation;Coya-Machali Formation (Chilense Formation) |
| Associated type: | Diorite,Dacite,Lamprophyre |
| Structure: | North Trending Folds, Faults, And Plutonic Masses, Braden Pipe (Old Explosive Volcanic Vent) Is A Circular Inverted Conical Shaped Hole 5200 Ft Deep In The Volcanics, Filled With Breccia, Surrounded By The Orebody |
| Tectonic: | Andean Cordillera And Batholith |
| Alteration processes: | Potassic, Secondary Biotite-Kspar-Anhydrite-Quartz-Sericite; Quartz-Sericite Alteration; Propylitic Alteration; Supergene Argillic Alteration. |
| MRDS | W001540 |
| DEP | 10068475 |
| Reference | {Deposit:: RUIZ, F., CARLOS, 1965, GEOLOGIA Y YACIMENTOS METALIFERO DE CHILE: INST. INV. GEOL. CHILE, P. 177-181. (SPANISH)}{Deposit:: BEALL, J. F., 1969, COPPER IN THE ANDES: MIN. ENG., V. 21, NO. 11, P. 62-66}{Deposit:: HOWELL, F. H. AND MALLOY, J. S.,960, GEOLOGY OF THE BRADEN OREBODY, CHILE, SOUTH AMERICA: ECONOMIC GEOLOGY, V. 55, NO. 5, P. 863-905}{Deposit:: MINING JOURNAL ANNUAL REVIEW, JUNE, 1970, P. 299.}{Deposit:: MINING JOURNAL ANNUAL REVIEW, JUNE, 1969, P. 257-258.}{Deposit:: MINING JOURNAL ANNUAL REVIEW, JUNE, 1972, P. 306-307.}{Deposit:: AMERICAN METAL MARKET, V. 65, NO. 150, P. 18.}{Deposit:: METALS WEEK - METALS SOURCEBOOK, 6/16/75, #C3005.}{Deposit:: CAMUS, F., 1975, GEOLOGY OF THE EL TENIENTE OREBODY WITH EMPHASIS ON WALL ROCK ALTERATION: ECONOMIC GEOLOGY, V. 70, NO. 8, P. 1341-1372.}{Deposit:: 1906 DIREXPL BRADEN COPPER C}{Production:: PRODUCTION INFORMATION IS FROM MINING JOURNAL ANNUAL REVIEW, 1969, 1970, AND 1972, BEALL, 1969, HOWELL, 1960 AND AMERICAN METAL MARKET, 1977. CAMUS (1975). HOWELL AND MOLLOY (1960)}{Reserve-Resource:: EST. BY G GOUDARZI 3/73} |
| Reporter | Davidson, Claire B., Page, Norman J. |