Database name: |
World Sediment-Hosted Cu Deposits |
Compilers: |
R. V. Kirkham, J. J. Carriere, A. Rafer, and P. Born |
Release date: |
2015-01-27 |
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Deposit name(s): |
Buen Pastor |
Political location(s): |
Bolivia; Province or state: La Paz; Subprovince or locality: Corocoro District; Nearest community: La Paz (130 km SW) |
Deposit clan (type): |
sediment-hosted copper |
Deposit (sub) types: |
continental redbed; chalcocite, minor galena and sphalerite replacing cement and organic matter in red sandstone of caquiaviri fm; and native copper filling pores and fractures in sandstone of ballivian fm; ores- copper |
Deposit status: |
past producer |
Geologic province: |
Altiplano |
Geologic subprovince: |
Ulloma Domain |
Commodities: |
Cu; Ag |
Geological ages: |
Late Eocene - Late Oligocene (host rocks) |
Tectonic setting: |
continental basin-foreland; transpressive (host rocks) |
Coincident features: |
stratigraphic unconformity (Vetas and Ballivian formations) |
Regional tectonic structure: |
diapirs (large diapir of gypsum and shale) |
Host rocks: |
(1) sedimentary; sandstone-conglomerate; Magma series/sedimentary package/metamorphic group: red bedHost rock stratigraphy: | Caquiaviri Formation |
(2) sedimentary; mudstone-siltstoneIndividual lithologies: | lutite (red) shale | Host rock stratigraphy: | Ballivian (Ramos) Formation |
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Qualified comments: |
(Applies to: miscellaneous comments) chalcocite, minor galena and sphalerite replacing cement and organic matter in red sandstone of Caquiaviri fm; and native copper filling pores and fractures in sandstone of Ballivian fm; ores- copper sulphides, native copper, domeykite and native silver |
References: |
Cox, D. P.; Carrasco, R.; André-Tamos, O.; Hinojosa-Velasco, A.; Long, K. R., 1992 |
Copper Deposits in Sedimentary Rocks |
Section Geology of Known Mineral Deposits, in Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia, Edited by United States Geological Survey; Servicio Geologico de Bolivia, Bulletin, U.S. Geological Survey, 1975, 365 p., 8 maps, p. 95 - 108 |
Long, K. R., 1992 |
Mines, Prospects, and Mineral Occurrences, Altiplano and Cordillera Occidental, Bolivia |
Appendix A, in Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia, Edited by United States Geological Survey; Servicio Geologico de Bolivia, Bulletin, U.S. Geological Survey, 1975, 365 p., 8 maps, p. 244 - 272 |
Richter, D. H.; Luddington, S.; Soria-Escalante, E., 1992 |
Geological Setting |
in Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia, Edited by United States Geological Survey; Servicio Geologico de Bolivia, Bulletin, U.S. Geological Survey, 1975, 365 p., 8 maps, p. 14 - 24 |
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Production data: |
Report period: from 1840 until 1860; 500 metric ton metal; Provisional entry?: yes; Yearly or summary?: SGrade-commodity information: | Ag: 100 percent | weight-commodity information: | Ag: 500 metric ton | Reference: Cox, D. P.; Carrasco, R.; André-Tamos, O.; Hinojosa-Velasco, A.; Long, K. R., 1992: Copper Deposits in Sedimentary Rocks; Section Geology of Known Mineral Deposits, in Geology and Mineral Resources of the Altiplano and Cordillera Occidental, Bolivia, Edited by United States Geological Survey; Servicio Geologico de Bolivia, Bulletin, U.S. Geological Survey, 1975, 365 p., 8 maps, p. 95 - 108 Percent weights allocated to deposit: 100.0% |
Associated mine(s): |
Buen Pastor Mine (22) |
Associated group(s): |
Corocoro Area (4), Corocoro District (5) |