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

Authors

  • 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

DOI:

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

Keywords:

deposit, manganese, supergenic, electrical resistivity, chargeability

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 (20Ω.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.

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Published

2014-04-01

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

Issue

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

Section

Article

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

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