Geological and geophysical data integration for delimitation of mineralized areas in a supergene manganese deposits
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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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 |
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 |