Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Rogerio Kwitko-Ribeiro"'
Autor:
Petterson de Azevedo Barbosa, Maurício Guimarães Bergerman, Elisabeth da Fonseca, Rogerio Kwitko-Ribeiro
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Minerals; Volume 11; Issue 12; Pages: 1427
Minerals, Vol 11, Iss 1427, p 1427 (2021)
Universidade de São Paulo (USP)
instacron:USP
Minerals; Volume 11; Issue 12; Pages: 1427
Minerals, Vol 11, Iss 1427, p 1427 (2021)
The geological context of this study is established in the iron oxide-copper-gold (IOCG) deposit of Sossego (Canaã dos Carajás, Brazil), where hydrothermal alterations in shear zones concentrated the metals of interest and added new characteristics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7acd243a0ebb39a53af009835df4d3bd
Publikováno v:
Minerals; Volume 12; Issue 6; Pages: 716
The study presents SEM-based automated mineralogy to distinguish between natural sediments and iron ore tailings deposits from the Paraopeba River, after the failure of B1 Dam in Brumadinho, Minas Gerais, Brazil. Samples were obtained from borehole c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0b8d7a37e87061238509c505b61ca06
https://doi.org/10.3390/min12060716
https://doi.org/10.3390/min12060716
Autor:
Miguel Tupinambá, Bernd Lehmann, Benjamin Eickmann, Rogerio Kwitko-Ribeiro, Thomas Zack, Stephan König, Alexandre Raphael Cabral
Publikováno v:
Economic Geology
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f22dee76b8f2af296c4b917a5fa7a948
Autor:
Bernd Lehmann, Rogerio Kwitko-Ribeiro, Alexandre Raphael Cabral, Miguel Tupinambá, Michael Brauns, Armin Zeh, Michael Wiedenbeck
Publikováno v:
Mineralogy and Petrology
The platiniferous gold–palladium belt of Minas Gerais, Brazil, forms an approximately 240-km-long, roughly north–south trending domain that includes numerous auriferous lodes and platiniferous alluvium. The belt transects two Precambrian terranes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::685bce93de86781087f6fdc2d8288c04
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:2762890
http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:2762890
Autor:
Harald Strauss, Alexandre Raphael Cabral, Helene Brätz, Nikola Koglin, Rogerio Kwitko-Ribeiro
Publikováno v:
Mineralium Deposita. 48:805-816
The distribution of mineral deposits, characterised as barite deposits, hematite-rich auriferous deposits and auriferous tourmaline–sulfide deposits, displays a regional sulfate–hematite–sulfide zoning along the thrust-delineated limbs of the M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72a6f16e35a6bc9b31a3bc943dcec03c
https://doi.org/10.1007/s00126-013-0481-4
https://doi.org/10.1007/s00126-013-0481-4
Autor:
Joël Brugger, Rogerio Kwitko-Ribeiro, Alexandre Raphael Cabral, Miguel Tupinambá, Bernd Lehmann, Frank Reith, Guido Meinhold
Publikováno v:
Chemical Geology. 334:182-188
Supergene aggregates of platinum–palladium (Pt–Pd) intermetallic compounds from the Corrego Bom Sucesso alluvial deposit, Minas Gerais, Brazil, are coated with abundant, poorly crystalline nanoparticles of anatase (TiO 2 ). The anatase coating is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abc9bd78541d4d89538922168c783b13
https://doi.org/10.1016/j.chemgeo.2012.10.014
https://doi.org/10.1016/j.chemgeo.2012.10.014
Autor:
Alexandre Raphael Cabral, Rogerio Kwitko-Ribeiro, Adriana Zapparoli, Eduardo Geraldo Melo Motta
Publikováno v:
Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen. 265:305-314
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1711e93ef5999432bc26dd7466530f3e
https://doi.org/10.1127/0077-7749/2012/0269
https://doi.org/10.1127/0077-7749/2012/0269
Autor:
Heinrich Riesemeier, Martin Radtke, Miguel Tupinambá, Bernd Lehmann, Rogerio Kwitko-Ribeiro, Uwe Reinholz, Alexandre Raphael Cabral, Frans Munnik
Publikováno v:
Chemical Geology. 281:125-132
Synchrotron radiation-induced X-ray fluorescence (SR-XRF) spectrometry was applied to determine iodine concentrations in alluvial Pt–Pd aggregates with delicate morphological features from Corrego Bom Sucesso, Minas Gerais, Brazil. The millimetre-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78620bc3302d1a36ea6f3ef14466a4d4
https://doi.org/10.1016/j.chemgeo.2010.12.003
https://doi.org/10.1016/j.chemgeo.2010.12.003
THE PLATINIFEROUS Au-Pd BELT OF MINAS GERAIS, BRAZIL, AND GENESIS OF ITS BOTRYOIDAL Pt-Pd AGGREGATES
Autor:
Alexandre Raphael Cabral, Sandra Schlosser, Rogerio Kwitko-Ribeiro, Francisco Robério de Abreu, Bernd Lehmann, Miguel Tupinambá
Publikováno v:
Economic Geology. 104:1265-1276
We delineate an approximately 240-km-long, north-trending Au-Pd-Pt belt in Minas Gerais, Brazil, which hosts hydrothermal Pd-Pt-bearing gold mineralization in its southern part (Quadrilatero Ferrifero and Itabira district) and alluvial Pd-Pt-Au miner
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f7a5b0350d4fed447ca26f40a7264b8
https://doi.org/10.2113/gsecongeo.104.8.1265
https://doi.org/10.2113/gsecongeo.104.8.1265
Autor:
J. Haloda, Vojtěch Vlček, Alexandre Raphael Cabral, Anna Vymazalová, Bernd Lehmann, František Laufek, Miguel Tupinambá, Rogerio Kwitko-Ribeiro
Publikováno v:
European Journal of Mineralogy. 21:811-816
Potarite, ideally PdHg, is reported in the literature to have compositions varying from PdHg or Pd(Hg,Au) to Pd3Hg2. Such a Pd3Hg2 phase is unknown in the synthetic Pd–Hg binary system. For the first time, Pd–Hg grains recovered from the historic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db9ba88d69600fac7822891638e4cd9d
https://doi.org/10.1127/0935-1221/2009/0021-1943
https://doi.org/10.1127/0935-1221/2009/0021-1943