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Igarapé Bahia mine, Alemão Cu deposit, Parauapebas, Carajás mineral province, Pará, Brazil

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude: 6° South , 50° West (est.)
Margin of Error:~152km
Name(s) in local language(s):Igarapé Bahia, Serra dos Carajás


Iron oxide-Cu-Au-(Mo-Ag-U-REE) deposit, consisting of a hydrothermally altered breccia underlain by basalt and iron-formation and overlain by siltstone and greywacke. The breccia contains clasts of altered basalt, chert and iron-formation in a matrix of chlorite, magnetite, carbonates and chalcopyrite. The orebody has a strongly weathered gossaniferous cap that extends to depths of 200 m. Gold and chalcopyrite are the main ore minerals.

The mine was started in 1990 and produced about 98 tons of gold until 2002, when Vale ceased the operation.

A deeper orebody, Alemão (Cu-rich), was reached in the end of the operation.

Mineral List


63 valid minerals.

Rock Types Recorded

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This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Revista Brasileira de Geociências 30(2):230-233.

Zang, W., & Fyfe, W. S. (1993). A three-stage genetic model for the Igarape Bahia lateritic gold deposit, Carajas, Brazil. Economic Geology, 88(7), 1768-1779.

Tazava, E. (1999). Mineralização de Au-Cu-(±ETR-U) associada às brechas hidrotermais do depósito de Igarapé Bahia, Província Mineral de Carajás, PA. MS Thesis

Thorman, C.H., DeWitt, E., Maron, M.A.C., and Ladeira, E.A. (2001): Major Brazilian gold deposits - 1982 to 1999. Mineralium Deposita 36, 218-227. DOI 10.1007/s001260100170

Villas, R.N., and Dias Santos, M. (2001): Gold deposits of the Carajás mineral province: deposit types and metallogenesis. Mineralium Deposita 36, 300-331. DOI 10.1007/s001260100178

Tallarico, F. H., Figueiredo, B. R., Groves, D. I., Kositcin, N., McNaughton, N. J., Fletcher, I. R., & Rego, J. L. (2005). Geology and SHRIMP U-Pb geochronology of the Igarapé Bahia deposit, Carajás copper-gold belt, Brazil: an archean (2.57 Ga) example of iron-oxide Cu-Au-(U-REE) mineralization. Economic Geology, 100(1), 7-28.

Dreher, A.M., Xavier, R.P., Taylor, B.E., and Martini, S.L. (2008): New geologic, fluid inclusion and stable isotope studies on the controversial Igarapé Bahia Cu–Au deposit, Carajás Province, Brazil. Mineralium Deposita 43, 161-184.

Grainger, C.J., Groves, D.I., Tallarico, F.H.B., and Fletcher, I.R. (2008): Metallogenesis of the Carajás Mineral Province, Southern Amazon Craton, Brazil: Varying styles of Archean through Paleoproterozoic to Neoproterozoic base- and precious-metal mineralisation. Ore Geology Reviews 33, 451-489.


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