Výsledky vyhledávání - "Ricardo Scholz"

Akademický článek

PETROGÊNESE E IDADE QUÍMICA U-Th-Pb DOS PEGMATITOS DE ITAMBÉ (BA) REGISTRADAS PELA MONAZITA

Autor: Rafael de Magalhães Gomes Ferreira, Alexandre de Oliveira Chaves, Ricardo Scholz, Guilherme De Oliveira Gonçalves

Publikováno v: Geochimica Brasiliensis, Vol 34, Iss 1, Pp 59-71 (2020)

magens de elétrons retro-espalhados e microanálises químicas por microssonda eletrônica foram obtidas a partir de cristais de monazita pertencentes aos pegmatitos Bananeira, Itambé, Coqueiro, Cavada e Paraíso do município de Itambé-BA, inseri

Externí odkaz: https://doaj.org/article/857ad563dc444cb697a302d83b3ac968

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Akademický článek

Anatase crystals of unusual habit in quartz veins from the Diamantina region (Espinhaço Range, Minas Gerais)

Autor: Mario Luiz de Sá C. Chaves, Joachim Karfunkel, Vladimir Bermanec, Vladimir Zebec, Ricardo Scholz, Luiz Alberto D. Menezes Filho

Publikováno v: REM: International Engineering Journal, Vol 71, Iss 1, Pp 37-43

Abstract The Espinhaço Range, in the Diamantina region (central part of the State of Minas Gerais), is known worldwide as a famous source of associated occurrence of quartz, rutile and/or anatase crystals. The latter is also a classic accompanying m

Externí odkaz: https://doaj.org/article/8e84ca4ee1b8428981e1fdefc5fc7b33

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PETROGÊNESE E IDADE QUÍMICA U-Th-Pb DOS PEGMATITOS DE ITAMBÉ (BA) REGISTRADAS PELA MONAZITA

Autor: Alexandre de Oliveira Chaves, Guilherme De Oliveira Gonçalves, Ricardo Scholz, Rafael de Magalhães Gomes Ferreira

Publikováno v: Geochimica Brasiliensis, Vol 34, Iss 1, Pp 59-71 (2020)

Imagens de eletrons retro-espalhados e microanalises quimicas por microssonda eletronica foram obtidas a partir de cristais de monazita pertencentes aos pegmatitos Bananeira, Itambe, Coqueiro, Cavada e Paraiso do municipio de Itambe-BA, inseridos na

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::575bff1d9d6d2c55248beeee720116d0
https://doaj.org/article/857ad563dc444cb697a302d83b3ac968

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Radiation-induced defects in montebrasite: An electron paramagnetic resonance study of O – hole and Ti3+ electron centers

Autor: J. R. Toledo, Raphaela de Oliveira, Joachim Karfunkel, Lorena N. Dias, Ricardo Scholz, Klaus Krambrock, Maurício V. B. Pinheiro, Mario Luiz de Sá Carneiro Chaves

Publikováno v: American Mineralogist. 105:1051-1059

Montebrasite is a lithium aluminum phosphate mineral with the chemical formula LiAlPO4(Fx,OH1–x) and considered a rare gemstone material when exhibiting good crystallinity. In general, montebrasite is colorless, sometimes pale yellow or pale blue.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::28adb7fd3df467e088d48ed973617345
https://doi.org/10.2138/am-2020-7168

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Diamond formation beneath the Coromandel area, southwestern São Francisco Craton – The role of re-fertilization and subduction

Autor: Luísa D.V. Carvalho, Thomas Stachel, D. Graham Pearson, Reinhardt A. Fuck, Tiago Jalowitzki, Suzette Timmerman, Matthew Steele-Maclnnis, Guilherme O. Gonçalves, Rogério Silvestre Pereira, Ricardo Scholz

The lithospheric mantle underpinning the Alto Paranaíba Igneous Province, southwestern São Francisco Craton, was investigated through a study of 82 diamonds and their mineral inclusions from the Coromandel (Douradinho River), Verde River (northern

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3746d84619aa2a57111579035943b99a

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