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Resource estimation through ordinary kriging for area zero ree deposit, Araxá (MG)Estimativa de recursos, utilizando o método de krigagem ordinária, para o depósito de terras raras área zero, Araxá (MG)
(2020-01-01)
The “Área Zero” deposit is located in the municipality of Araxá, Minas Gerais. It is located in the southern portion of the Brasilia Belt, in the Igneous Province of Alto Paranaíba, inserted in the Barreiro Alkaline-Carbonatitic ...
Major- and trace-element compositions of indicator minerals that occur as macro- and megacrysts, and of xenoliths, from kimberlites in Northeastern Angola
(MDPI, 2012-10)
In this study, we compare the major- and trace-element compositions of olivine, garnet, and clinopyroxene that occur as single crystals (142 grains), with those derived from xenoliths (51 samples) from six kimberlites in ...
Comportamento dos Elementos Terras Raras na Alteração Intempérica de Rochas Vulcânicas Ácidas no Sul do Brasil
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 1997)
Rare earth element and yttrium geochemistry applied to the genetic study of cryolite ore at the Pitinga Mine (Amazon, Brazil)
(Academia Brasileira de Ciências, 2008)
This work aims at the geochemical study of Pitinga cryolite mineralization through REE and Y analyses in disseminated and massive cryolite ore deposits, as well as in fluorite occurrences. REE signatures in fluorite and ...
Trace element geochemistry of apatite and magnetite in gold systems of the Alta Floresta mineral province: petrogenetic and metallogenic implications
(Universidade Estadual Paulista (Unesp), 2020-08-05)
Minerais indicadores, como apatita e magnetita, são úteis para discriminação entre rochas estéreis e halos de alteração hidrotermal, visto que eles apresentam composições químicas contrastantes que permitem-nos inferir a ...
Trace elements, REEs and stable isotopes (B, Sr) in GAS groundwater, São Paulo State, Brazil
(2017-04-01)
This investigation was carried out in the Guarani Aquifer System (GAS) following a transect in São Paulo State, Brazil, and involved the analysis of trace elements, REEs and stable isotopes (B, Sr) in both rainwater and ...
The Co-Ni signature of sulfide minerals from the Mantoverde IOCG deposit, northern Chile
(2017)
Iron Oxide Copper Gold (IOCG) deposits are an important source of Cu and other elements such as Au, Ag, REE, U, P and Co. Although these deposits are economically important, their modes of origin remain controversial and ...
Crystallization conditions and controls on trace element residence in the main minerals from the Pedra Branca Syenite, Brazil: An electron microprobe and LA-ICPMS study
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
Major and trace-element microanalyses of the main minerals from the 610 Ma Pedra Branca Syenite, southeast Brazil, allow inferences on intensive parameters of magmatic crystallization and on the partition of trace-elements ...
Geologia estrutural do segmento oeste da Serra do Curral, Quadrilátero Ferrífero, e o controle tectônico das acumulações de alto teor em Fe
(Universidade Federal de Minas GeraisBrasilIGC - DEPARTAMENTO DE GEOLOGIAPrograma de Pós-Graduação em GeologiaUFMG, 2013-05-29)
The structure of western Serra do Curral, Quadrilátero Ferrífero represents the partial exposure of a syncline that verges to NNW – Piedade Syncline. This regional structure has parasitic folds denominated as B1A, which ...
The parisite-(Ce) mineralization associated with the Fazenda Varela carbonatite (Correia Pinto, SC)A mineralização de parisita-(Ce) associada ao carbonatito Fazenda Varela (Correia Pinto, SC)
(Instituto de Geociências /Universidade Federal do Rio Grande do Sul, 2013)