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): Boleo District
Longitude / Latitude: -112.50000 / 27.16667
Political location(s): Mexico; Province or state: Baja; Nearest community: Santa Rosalia Town (4 km SW)
Deposit clan (type): sediment-hosted copper
Deposit (sub) types: paralic marine; 5 ore beds of clayey tuff/ organic carbon in ore
Commodities: Cu; Ag; Co; Zn; Mn; Fe
Geological ages: Early Pliocene (host rocks)
Tectonic setting: continental rift-graben; divergent (host rocks)
Host rocks: (1) sedimentary; sandstone; Depositional setting: shallow marine (reducing)
Individual lithologies:tuff
Host rock stratigraphy:Boleo Formation

(2) sedimentary; carbonate-conglomerate
Individual lithologies:conglomerate
limestone

(3) sedimentary; evaporite
Individual lithologies:gypsum
Qualified comments: (Applies to: miscellaneous comments) 5 ore beds of clayey tuff/ organic carbon in ore; Cu mines cover zone 11km long by 0.5-3km wide parallel to the coast; host rocks are cyclic marine to nonmarine tuff and conglomerate
References:
Gustafson, L. B.; Williams, N., 1981
Sediment-Hosted Stratiform Deposits of Copper, Lead, and Zinc
in Economic Geology, 75th Anniversary Volume (1905-1980), Edited by Skinner, B. J., Economic Geology and the Society of Economic Geologists, 964 p, p. 139 - 178

Nishihara, H., 1957
Origin of the Manto Copper Deposits in Lower California, Mexico
Economic Geology, Volume 52, p. 944 - 951

Wilson, I. F., 1948
Buried Topography, Initial Structures and Sedimentation in Santa Rosalia Area, Baja California, Mexico
Bulletin of the American Association of Petroleum Geologists, Volume 32, p. 1762 - 1807

Wilson, I. F., 1955
Geology and Mineral Deposits of the Boleo Copper District, Baja California, Mexico
Professional Paper, United States Geological Survey, Instituto Nacional para la Investigacion de Recursos Minerales, U.S. Geological Survey, Publication code 273, 134 p.

Production data: Report period: from 1886 until 1954; 453,592.4 metric ton metal; Provisional entry?: yes; Yearly or summary?: S
Grade-commodity information:Cu: 99.999 percent
weight-commodity information:Cu: 453,592.4 metric ton
Reference: Wilson, I. F.; Rocha, V. S., 1955: Geology and Mineral Deposits of the Boleo Copper District, Baja California, Mexico; Professional Paper, United States Geological Survey, Instituto Nacional para la Investigacion de Recursos Minerales, U.S. Govt. Print Office, Washington, D.C., Publication code 273, 134 p.
Percent weights allocated to deposit: 100.0%



Report period: from 1886 until 1947-06; 13,600,000 metric ton ore; Provisional entry?: yes; Yearly or summary?: S
Grade-commodity information:Cu: 4.81 percent
Au: 0.19 grams/metric ton
Ag: 9 grams/metric ton
Mn: 6.5 percent
Zn: 0.8 percent
Pb: 0.06 percent
Reference: Wilson, I. F.; Rocha, V. S., 1955: Geology and Mineral Deposits of the Boleo Copper District, Baja California, Mexico; Professional Paper, United States Geological Survey, Instituto Nacional para la Investigacion de Recursos Minerales, U.S. Govt. Print Office, Washington, D.C., Publication code 273, 134 p.
Percent weights allocated to deposit: 100.0%
Resource data:
Disclaimer - Reserves/Resource Data

Her Majesty the Queen in Right of Canada, represented by the Minister of Natural Resources (NRCan) does not warrant or guarantee the accuracy, completeness or fitness for any purpose of Reserve and Resource information (Data) contained in this database, including whether the Data is compliant with any securities regulations or standards, and NRCan does not assume any liability with respect to any damage or loss incurred as a result of the use made of the Data.

Resource and reserve figures are historical in nature. The Data source provided with each set of figures should be cited if the Data are re-reported.

Estimate date: 1955; 4,535,923 metric ton ore; Combined with production?: no; Provisional entry?: yes; Resource category: inferred resource
Grade-commodity information:Cu: 2 percent
Reference: Wilson, I. F.; Rocha, V. S., 1955: Geology and Mineral Deposits of the Boleo Copper District, Baja California, Mexico; Professional Paper, United States Geological Survey, Instituto Nacional para la Investigacion de Recursos Minerales, U.S. Govt. Print Office, Washington, D.C., Publication code 273, 134 p.
Percent weights allocated to deposit: 100.0%


537,600,000 metric ton ore; Combined with production?: no; Provisional entry?: yes; Resource category: resource
Grade-commodity information:Cu: 0.73 percent
Co: 0.054 percent
Cutoff grade-commodity:Cu: 0 percent
Reference: Anonymous, 1996: Copperstone's Boleo Copper-Gold Project is Taking Shape in Mexico; International Curator Resources Adds to Resource at Boleo Project; The Northern Miner, March 25 issue, p. 3
Percent weights allocated to deposit: 100.0%


374,000,000 metric ton ore; Combined with production?: no; Provisional entry?: yes; Resource category: geological resource
Grade-commodity information:Cu: 0.96 percent
Co: 0.07 percent
Reference: Anonymous, 1996: Curator Proves Up Project in Baja; The Northern Miner, September 30 issue, p. 19
Percent weights allocated to deposit: 100.0%


Estimate date: 1997; 464 million metric tons ore; Combined with production?: no; Provisional entry?: yes; Resource category: geological resource
Grade-commodity information:Cu: 0.7 percent
Co: 0.058 percent
Reference: Bailes, R.J.; Christoffersen, J.E.; Escando, V.F.; Peatfield, G.R., 2001: Sediment-hosted deposits of the Boleo copper-cobalt-zinc district, Baja California sur, Mexico; Society of Economic Geologists Special Publication, Volume 8, p. 291 - 306
Percent weights allocated to deposit: 100.0%


Estimate date: 2001; 70 million metric tons ore; Combined with production?: no; Provisional entry?: yes; Resource category: proven reserve
Grade-commodity information:Cu: 1.29 percent
Co: 0.09 percent
Zn: 0.62 percent
Reference: Conly, A.G.; Scott, S.D.; Bellon, G.; Beaudoin, G., 2000: The Boleo Cu-Co-Zn deposit, Baja California Sur, Mexico; the role of magmatic fluids in the genesis of a sedimentary deposit; Piestrzynski et al. (eds.), p. 223-226.; in Mineral Deposits at the Beginning of the 21st Century, Edited by Piestrzynski, A., Proceedings of the Sixth Biennial SGA Meeting, SGA, Swets and Zeitlinger Publishers Lisse, 6, p. 223 - 226
Percent weights allocated to deposit: 100.0%

Generated 2015-01-27 17:27:06 with GQuery -- 3.7 ADO (3.19..3.22 -- 2008-12-16)
GlobalDB System, Geological Survey of Canada, Natural Resources Canada