Geological and geophysical data integration for delimitation of mineralized areas in a supergene manganese deposits | Geofisica Internacional

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Published: Apr 1, 2014

DOI: https://doi.org/10.1016/S0016-7169(14)71500-4

Keywords:

deposit manganese supergenic electrical resistivity chargeability

César Augusto Moreira

Departamento de Geologia Aplicada Instituto de Geociéncias e Ciéncias Exatas Universidade Estadual Paulista, Brazil

Mario Rezende Borges

Instituto de Geociéncias e Ciéncias Exatas Universidade Estadual Paulista, Brazil

Glauber Matheus Lira Vieira

Instituto de Geociéncias e Ciéncias Exatas Universidade Estadual Paulista, Brazil

Walter Malagutti Filho

Departamento de Geologia Aplicada Instituto de Geociéncias e Ciéncias Exatas Universidade Estadual Paulista, Brazil

Mariana Aparecida Fernándes Montanheiro

Instituto de Geociéncias e Ciéncias Exatas Universidade Estadual Paulista, Brazil

Abstract

Geophysical methods are widely used in mineral exploration. This paper discusses the results of geological and geophysical studies in supergene manganese deposits of southern Brazil. Mineralized zones as described in geological surveys were characterized as of low resistivity (20Î©.m) and high chargeability (30ms), pattern found also in oxides and sulfite mineral deposits. Pseudo-3D modeling of geophysical data allowed mapping at several depths. A relationship between high chargeability and low resistivity may define a pattern for high grade gonditic manganese ore. Large areas of high chargeability and high resistivity may result in accumulation of manganese and iron hydroxides, due to weathering of the gonditic ore, dissolution, percolation and precipitation.

How to Cite

Moreira, C. A., Rezende Borges, M., Lira Vieira, G. M., Malagutti Filho, W., & Fernándes Montanheiro, M. A. (2014). Geological and geophysical data integration for delimitation of mineralized areas in a supergene manganese deposits. Geofisica Internacional, 53(2), 199–210. https://doi.org/10.1016/S0016-7169(14)71500-4

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Vol. 53 No. 2 (2014): April 1, 2014

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