Magnetic Mineralogy
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. Mineralogy, magnetic susceptibility and geochemistry of Fe-rich Oxisols developed from several parent materials
ABSTRACT: Fe-rich Oxisols on mafic rocks in Brazil generally have high magnetic susceptibility with high contents of some trace elements. These are taxonomically similar soils; however, differences in magnetic and geochemical properties may affect agricultural or environmental usability and subsequent management. This study investigated the pedogenesis of Fe
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-09
-
2. Serra Pelada: the first Amazonian Meteorite fall is a Eucrite (basalt) from Asteroid 4-Vesta
ABSTRACT Serra Pelada is the newest Brazilian eucrite and the first recovered fall from Amazonia (State of Pará, Brazil, June 29th 2017). In this paper, we report on its petrography, chemistry, mineralogy and its magnetic properties. Study of four thin sections reveals that the meteorite is brecciated, containing basaltic and gabbroic clasts, as well of rec
An. Acad. Bras. Ciênc.. Publicado em: 01/02/2018
-
3. The Buritizal meteorite: classification of a new Brazilian chondrite
Abstract On August 14, 1967, the reporter Saulo Gomes, working at TV Tupi, went to a small city in the State of São Paulo called Buritizal to investigate reports of a meteorite fall and write a newspaper report. He actually recovered three fragments of the meteorite at a small farm. In 2014, he donated one of the fragments to the Museu Nacional of the Unive
REM, Int. Eng. J.. Publicado em: 2017-06
-
4. Chemical-Mineralogical Characterization of Magnetic Materials from Magnetic Soils of the Southern Espinhaço Mountain Chain and of the Upper Jequitinhonha Valley, State of Minas Gerais, Brazil
ABSTRACT In the Southern Espinhaço Mountain Chain and in the Upper Jequitinhonha Valley, magnetic soils, in different pedogenetic stages, are found to be forming over intrusions of basic lithology. The essential chemical and mineralogical properties of samples from magnetic soil profiles from those two physiographic environments in the state of Minas Gerais
Rev. Bras. Ciênc. Solo. Publicado em: 27/03/2017
-
5. Thermal Transformation and Characterization of Synthetic Al-Substituted Maghemites (γ-Fe2-xAlxO3)
ABSTRACT Burning is a common practice in tropical areas and related changes in mineralogy might affect the chemical and physical behavior of soils. Maghemite is a common iron oxide in soils formed from basic rocks in tropical regions. This mineral and hematite are the main pigments in these soils and exhibit high magnetization stemming from the precursor mag
Rev. Bras. Ciênc. Solo. Publicado em: 03/11/2016
-
6. Clay mineralogy and magnetic susceptibility of Oxisols in geomorphic surfaces
Studies analyzing the variability of clay minerals and magnetic susceptibility provide data for the delineation of site-specific management areas since many of their attributes are important to agronomy and the environment. This study aimed to evaluate the spatial variability of clay minerals, magnetic susceptibility, adsorbed phosphorus and physical attribu
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-06
-
7. Alojamento e deformação de plútons graníticos da extremidade nordeste da Suíte Intrusiva Cunhaporanga (Domínio Apiaí - Faixa Ribeira, PR) / Emplacement and deformation of granitic plutons from northeast of Cunhaporanga Intrusive Suite (Apiaí Domain - Ribeira Belt, PR)
Granite plutons located on the northeast of Cunhaporanga Intrusive Suite (Patrimônio Santo Antônio, Ouro Verde, São Domingos and Santa Rita) are emplaced into low grade metasedimentary rocks (Itaiacoca Group) of the Apiaí Domain (Ribeira Belt). Most of these plutons are isotropic with pinkish to grey colors and their compositions vary from monzogranite t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/04/2011
-
8. Applied mineralogy to the beneficiation of the xenolithic zones, Cajati Mine, SP. / Mineralogia aplicada ao beneficiamento das zonas de xenólitos, Mina de Cajati, SP.
A mina de carbonatito de Cajati contém mineralização de apatita, utilizada na fabricação de ácido fosfórico, que é aplicado a matéria-prima carbonática para obtenção de foscálcio, suplemento mineral em rações animais. Dentre as unidades litológicas em lavra destacam-se as Zonas de Xenólitos, formadas pela interação da rocha encaixante com
Publicado em: 2007
-
9. Spatial analysis of plutonics bodies of mineiro belt trough integration of geological, airbone geophysical data and geochemical data / Analise espacial dos corpos plutonicos do cinturão mineiro atraves da integração de dados geologicos, aerogeofisicos e geoquimicos
Airborne geophysical data acquired over the Mineiro Belt in the southern portion of the São Francisco Craton, Minas Gerais, Brazil display patterns not previously identified by geological field mapping. The lack of rock exposures and connections among rock formations at surface poses problems for regional geologic mapping and interpretation, which are diffi
Publicado em: 2006