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THE SÃO GERALDO DO ARAGUAIA OPAL DEPOSIT, PARÁ, BRAZILTHE SÃO GERALDO DO ARAGUAIA OPAL DEPOSIT, PARÁ, BRAZIL
(Sociedade Brasileira de Geologia, 2017)
Gold-bearing iron duricrust in Central Brazil
(1991-11-01)
In the Cuiabá region-State of Mato Grosso, Central Brazil-primary gold mineralization is hosted by two generations of quartz veins in Precambrian metamorphic terrains of the Cuiabá Group. Gold is mined from the veins and ...
Gold-bearing iron duricrust in Central Brazil
(1991-11-01)
In the Cuiabá region-State of Mato Grosso, Central Brazil-primary gold mineralization is hosted by two generations of quartz veins in Precambrian metamorphic terrains of the Cuiabá Group. Gold is mined from the veins and ...
Geoelectric modeling of supergenic manganese ocurrence in heliodora region, Southern Minas Gerais
(2016-01-01)
This paper discusses the results of the combined application of Electric resistivity and Induced Polarization methods into a mineral occurrence of manganese of super-genic origin, characterized by oxides of manganese and ...
High-grade ore shoots at the Martha epithermal vein system, Deseado Massif, Argentina: The interplay of tectonic, hydrothermal and supergene processes in ore genesis
(Elsevier Science, 2016-01)
The complexity of high-grade ore-shoot formation is addressed through a detailed study of the Martha mine epithermal deposit (Deseado Massif, Patagonia, Argentina). The mine was active from 2002 to 2012, producing over ...
STUDY OF THE EVOLUTION OF SUPERGENE ALTERATION PROCESSES OF GRANITIC ROCKS - INDEPENDÊNCIA GRANITE - MORRO DO IPA, PORTO ALEGRE, RSEstudo da evolução dos processos de alteração supergênica de rocha granítica - Granito Independência - Morro do IPA, Porto Alegre, RS
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 2012)