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


Autoria(s): Moreira, Cesar Augusto; Borges, Mario Rezende; Lira Vieira, Glauber Matheus; Malagutti Filho, Walter; Fernendes Montanheiro, Mariana Aparecida
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

03/12/2014

03/12/2014

01/04/2014

Resumo

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 (20 Omega.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.

Formato

201-212

Identificador

http://www.geofisica.unam.mx/unid_apoyo/editorial/publicaciones/investigacion/geofisica_internacional/anteriores/2014/02/7_moreira.pdf

Geofisica Internacional. Mexico: Inst Geophysics Unam, v. 53, n. 2, p. 201-212, 2014.

0016-7169

http://hdl.handle.net/11449/113660

WOS:000333731400007

WOS000333731400007.pdf

Idioma(s)

eng

Publicador

Inst Geophysics Unam

Relação

Geofisica Internacional

Direitos

openAccess

Palavras-Chave #deposit #manganese #supergenic #electrical resistivity #chargeability
Tipo

info:eu-repo/semantics/article