CANADIAN AND WORLD MINERAL DEPOSIT DATABASES
Geological Survey of Canada


 
Database name: World Sediment-Hosted Cu Deposits
Compilers: R. V. Kirkham, J. J. Carriere, A. Rafer, and P. Born
Release date: 2015-01-27
   
Deposit name(s): Chacoma
Longitude / Latitude: -68.42028 / -16.80056
Political location(s): Bolivia; Province or state: Oruro; Nearest community: Estancia Chacoma Grande (1 km N)
Deposit clan (type): sediment-hosted copper
Deposit (sub) types: continental redbed; mineralization follows lenses of grey sandstone and shale with fossil wood
Geologic province: Altiplano
Commodities: Cu
Mineralization styles: stratabound replacement
Geological ages: Early Tertiary (host rocks)
Tectonic setting: continental basin-foreland; transpressive (host rocks)
Coincident features: organic matter (fossil plants)
Regional tectonic structure: anticlinorium (flank)
Host rocks: (1) sedimentary; mudstone-sandstone
Internal host rock structures:woody plant remains
Individual lithologies:shale
sandstone (grey)
Host rock stratigraphy:Tiahuanacu Formation
Qualified comments: (Applies to: miscellaneous comments) mineralization follows lenses of grey sandstone and shale with fossil wood; four mantos 60 cm thick and 60 to 450 m long; overturned flank of a fold
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

Associated mine(s): Chacoma Mine (17)

Generated 2015-01-27 17:26:37 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada