Gold Mineralization
Mostrando 13-24 de 39 artigos, teses e dissertações.
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13. Evolução magmática, alteração hidrotermal e gênese da mineralização de ouro e cobre do Palito, Província Aurífera do Tapajós (PA) / Magmatic evolution, hydrothermal alteration and geneseis of gold-copper mineralization at Palito, Tapajós Gold Province (PA)
The Palito porphyry type copper-gold deposit is located in the central region of the Amazonian craton, in the Tapajós Gold Province (TGP), in an area that is dominated by intermediate to felsic granitic and volcanic rocks of late Paleoproterozoic age. Three lithotypes make up this deposit. The Palito Granite, with porphyritic features, is the host rock for
Publicado em: 2010
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14. A fonte dos metais da mina de ouro Schramm, Santa Catarina: evidências de dados de isótopos de Pb e elementos terras raras
The source of the ore elements in the Schramm gold mine, localized in central part of Santa Catarina shield, has been constrained based on lead isotope composition of galena and sulfosalts, and the rare earth element (REE) patterns of the ore. The Pb207/ Pb206 model age obtained in galena and lillianite-gustavite series from the mineralization yields an age
Publicado em: 2010
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15. O deposito de oxido de ferro-cobre-ouro bacaba, provincia mineral de Carajas, PA : geocronologia U-Pb das rochas hospedeiras / Iron oxide-Cu-Au bacaba deposit, Carajas mineral province (PA), Brazil : U-Pb geocronology of the host rocks
The Bacaba iron oxidecoppergold deposit, situated in the Itacaiúnas Shear Belt, Carajás Mineral Province (Brazil), represents a satellite prospect of the world-class Sossego deposit, and might also represent a distal and deeper portion of the same or related hydrothermal system. The Bacaba deposit is located along a WNWESE-striking shear zone that de
Publicado em: 2010
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16. Evolução quimica e isotopica dos fluidos associados a mineralização de Fe-Cu-Au do deposito Alvo 118, provincia mineral de Carajas - PA / Chemical and isotopic evolution of the fluids from the Alvo 118 Fe-Cu-Au do deposit, Carajas mineral province (PA)
The Alvo 118 iron oxide-copper-gold (IOCG) deposit (170 Mt @ 1,0 wt% Cu, 0,3 g/t Au), together with the world-class Sossego and Cristalino deposits, lie in the southern sector of the Carajas Mineral Province (CMP) along a steeply-dipping, WNW-ESE-striking, 60 km-long shear zone, close to the contact of the Itacaiunas Supergroup metavolcano-sedimentary sequen
Publicado em: 2009
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17. Avaliação de matrizes tridimensionais colagênicas como carreadores celulares para a bioengenharia óssea / Evaluation of three-dimensional collagenic matrices as cellular scaffolds to bone bioengineering
The therapy of bone defects constitutes one of the great challenges of the medicine and dentistry. Although autogenous is considered "gold standart", presents limitations as the necessity of second surgical site, limitation of bone availability and lack of previsibility. Tissue bioengineering appeared as a promising treatment for critical bone defects conjug
Publicado em: 2008
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18. Processos metalogenéticos em ambientes de arco magmático tipo andino, caso de estudo: mineralizações da região dos Andes Patagônicos setentrionais do Chile / Metallogenic processes in andean volcanic arc setting, study case: mineralizations in the Chilean North-Patagonion Andes
In the Patagonian Andes region between 41 and 44° S extensive and continuous plutonic rocks of the North-Patagonian Batholith north segment are exposed. During their evolution most of the granitic rocks were emplaced in metamorphic rocks and other parts were emplaced in Late Jurassic-Berriasan volcanic rocks, Early Cretaceous sedimentary and volcanic rocks,
Publicado em: 2008
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19. Hydrothermal alteration of the Cerro La Mina gold prospect, Los Menucos, Patagonia Argentina : geology, remote sensing and stable isotopes / Alteração hidrotermal do prospecto aurifero Cerro La Mina, Los Menucos, Patagonia Argentina : geologia , sensoriamento remoto e isotopos estaveis
The epithermal Cerro La Mina prospect, located in the Los Menucos region, Patagonia Argentina, is currently being explored for epithermal precious-metal mineralization. Triassic hydrothermal activity produced intense alteration of rhyolites, andesites, ignimbrites, and tuffs of the Middle- to Late Triassic Los Menucos Group, in the Somún Curá massif. The u
Publicado em: 2007
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20. Petrologia e metalogenia do Depósito de Cobre Bom Jardim de Goiás (GO)
The Bom Jardim de Goiás Deposit is located at western Goiás State, on the western border of the Arenópolis magmatic arc. A reserve of 4,575,660 t, containing 0,92% Cu, was estimated by Serviço Geológico do Brasil (CPRM). The country rocks comprise vulcanoclastic rocks assigned to the Córrego da Aldeia formation from the Bom Jardim de Goiás Group, with
Publicado em: 2007
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21. Granitos da região de Peixoto de Azevedo : Novo Mundo e mineralizações auriferas relacionadas - Provincia Aurifera Alta Floresta (MT) / Granites of the Peixoto de Azevedo : Novo Mundo region and aureiferous mineralization relation - Alta Floresta Auriferous Province (MT)
A Província Aurífera Alta Floresta (PAAF) localiza-se na porção sul do Cráton Amazônico. Dentro desta província a região de Peixoto de Azevedo - Novo Mundo tem se constituído no principal distrito produtor de ouro. Nessa região, ortognáisses tonalíticos do embasamento forneceram idades que variam de 2816 ±4 Ma (Pb-Pb evaporação), em zircões d
Publicado em: 2007
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22. Genese dos depositos auriferos em metaconglomerados da formação moeda, Quadrilatero Ferrifero, MG : o papel do metamorfismo e associação com a materia carbonosa / Genesis of the metaconglomerate-hosted gold deposits of the moeda formation, Quadrilatero Ferrifero (State of Minas Gerais) : role of the metamorphism and the association with carbonaceous matter
The Quadrilátero Ferrífero has historically been one of the most important gold province in Brazil, with a significant number of productive greenstone-hosted lode gold deposits within the Rio das Velhas Supergroup together with those associated with the metasedimentary sequence of the Minas Supergroup. At the base of the Moeda formation, Minas Supergroup,
Publicado em: 2005
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23. Natureza e evolução dos fluidos hidrotermais no deposito cupro-aurifero Golden Hill, Camaguey, Cuba
The Cu-Au mineralization at the Golden Hill deposit in the Las Tunas Province, Eastem Cuba, is characterized by breccia-hosted massive and semi-massive sulfide bodies confined to the Contramaestre Fonnation in the Cretaceous Volcanic Arc. The deposit is enveloped by a silicic, argillic and advanced argillic alteration assemblage, typical of high sulfidation
Publicado em: 2000
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24. Modelo exploratorio para depositos auriferos do tipo Morro do Ouro com base em dados e tecnicas de sensoriamento remoto
A method for the identification of metallotects related to Morro do Ouro-type gold deposits (DTMO) is proposed, based on remote sensing data and techniques. Samples from this type of deposit, collected at Paracatu (Minas Gerais State) and Luziânia (Goiás State), were studied through reflectance spectroscopy and petrography. The results showed that iron oxi
Publicado em: 2000