 | | Journal (article/letter/editorial) | | formed in the Neoproterozoic Araçuaı́ orogen (SE Brazil) during Western Gondwanaland assembly Eliza Peixoto...formed in the Neoproterozoic Araçuaı́ orogen (SE Brazil) during Western Gondwanaland assembly, Gondwana...formed in the Neoproterozoic Araçuaí orogen (SE T Brazil) during Western Gondwanaland assembly a SC R...Alkmimb,1, I.A. Dussina,1 Universidade Federal de Minas Gerais, CPMTC–IGC, Programa de Pós–Graduação em Geologia...Campus Pampulha, Belo Horizonte, 31270–901, MG, Brazil Universidade Federal de Ouro Preto, DEGEO–EM, Campus |  | Amaral, Leandro, Caxito, Fabrício de Andrade, Pedrosa-Soares, Antonio Carlos, Queiroga, Gláucia, Babinski, Marly, Trindade, Ricardo, Lana, Cristiano, Chemale, Farid (2020) The Ribeirão da Folha ophiolite-bearing accretionary wedge (Araçuaí orogen, SE Brazil): New data for Cryogenian plagiogranite and metasedimentary rocks. Precambrian Research, 336. 105522 doi:10.1016/j.precamres.2019.105522 | Journal (article/letter/editorial) | | Pre-proofs The Ribeirão da Folha ophiolite-bearing accretionary wedge (Araçuaí orogen, SE Brazil): New data for... The Ribeirão da Folha ophiolite-bearing accretionary wedge (Araçuaí orogen, SE Brazil): New data for...The Ribeirão da Folha ophiolite-bearing accretionary wedge (Araçuaí orogen, SE 2 Brazil): New data for...Chemaled,1 6 7 a Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Geologia, CPMTC-IGC-UFMG... Belo Horizonte, MG, Brazil 9 b Instituto de Geociências, Universidade de São Paulo, Rua do Lago, 562 |  | Eeckhout, Sigrid G., Castañeda, Cristiane, Ferreira, Ana Cláudia M., Sabioni, Antônio C.S., de Grave, Eddy, Vasconcelos, Daniela C.L. (2002) Spectroscopic studies of spessartine from Brazilian pegmatites. American Mineralogist, 87 (10) 1297-1306 doi:10.2138/am-2002-1005 | Journal (article/letter/editorial) | | Federal, Brazil 4 Department of Mining and Geology, Federal University of Paraíba, Paraíba, Brazil 5 Department...Physics/ICEB, Federal University of Ouro Preto, Minas Gerais, Brazil 6 Department of Metallurgical and Materials...Engineering, Federal University of Minas Gerais, Minas Gerais, Brazil ABSTRACT Mössbauer spectra (MS)...garnet, cordierite, staurolite, andalusite, and sillimanite. The micaschists are locally migmatized and contain...2001). The Eastern gemological province (NE of Minas Gerais State, Fig. 2) includes two distinct types of |  | | Journal (article/letter/editorial) | | Faceting-grade crystals occur in Switzerland, Brazil, and China, but they are extremely rare and tend...347 Figure 2. A faceted 0.90-carat staurolite, Brazil. Robert J. Lauf specimen No. 4572. Figure 3. Simple...higher-grade metapelites, it may be associated with sillimanite, andalusite, or cordierite. The fact that staurolite...metamorphosed to the biotite, garnet, staurolite, and sillimanite zones. Green (1963, p. 991) described the paragenesis...produced staurolite, andalusite, cordierite and sillimanite in the surrounding schists. Retrograde metamorphism |  | | Journal (article/letter/editorial) | | [Laurentian University] at 02:10 27 October 2013 Minas Gerais, Brazil O ne of the most interesting and at times...pressure fields; the remaining two members, sillimanite and andalusite, are also familiar to many collectors...Cr, Fe, Mg, Ca, and K. It is a member of the sillimanite group and is trimorphous (having the same chemical...but a different structure) with andalusite and sillimanite. Kyanite is widely distributed in gneisses and...psuedomorphs of kyanite after andalusite and sillimanite are known from scattered locations. There are |  | | Journal (issue) | | Articles 708 Coloured Stone Mining and Trade in Brazil: A Brief History and Current Status By Aurélien...Collection V. L. Villani photo p. 758 Cover Photo: Brazil is the source of a variety of coloured stones,... almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite, chrysoberyl, chal- For more than...Ku Nam Nam Pai Stream 692 m Strea Aung Nam n Da Pa ream St 23°00' Nam Strea Mit m 96°45' Road...Junior (BC Gemas do Brasil, Governador Valadares, Brazil), and heating to 500°C in air was successful in |  | Degler, Reik, Pedrosa-Soares, Antônio, Dussin, Ivo, Queiroga, Gláucia, Schulz, Bernhard (2017) Contrasting provenance and timing of metamorphism from paragneisses of the Araçuaí-Ribeira orogenic system, Brazil: Hints for Western Gondwana assembly. Gondwana Research, 51. 30-50 doi:10.1016/j.gr.2017.07.004 | Journal (article/letter/editorial) | | paragneisses of the Araçuaí-Ribeira orogenic system, Brazil: Hints for Western Gondwana assembly Reik Degler...paragneisses of the Araçuaí-Ribeira orogenic system, Brazil: Hints for Western Gondwana assembly, (2017), doi:...paragneisses of the Araçuaí-Ribeira orogenic system, Brazil: Hints for Western Gondwana assembly Reik Degler1*;...Bernhard Schulz4 1 RI Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Geologia, SC...6627, Pampulha, 31270-901 Belo Horizonte, NU MG, Brazil 2 Universidade do Estado do Rio de Janeiro, Faculdade |  | Soares, D. R., Beurlen, H., Barreto, S. d. B., Da Silva, M. R. R., Ferreira, A. C. M. (2008) COMPOSITIONAL VARIATION OF TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL. The Canadian Mineralogist, 46 (5) 1097-1116 doi:10.3749/canmin.46.5.1097 | Journal (article/letter/editorial) | | THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL Dwight Rodrigues SOARES§ Centro Federal de Educação...671, 58100-000, Campina Grande, State of Paraíba, Brazil Hartmut BEURLEN Programa de Pós-Graduação em Geociências...State of Pernambuco, Brazil Sandra de Brito BARRETO and Marcelo Reis Rodrigues DA SILVA Departamento de...Ramos s.n., 54740-530, Recife, State of Pernambuco, Brazil Ana Claudia Mousinho FERREIRA Centro Federal de...671, 58100-000, Campina Grande, State of Paraíba, Brazil Abstract Various species of the tourmaline-group |  | | Journal (article/letter/editorial) | | The Pederneira Mine São José da Safira, Minas Gerais, Brazil Dedication This article is the culmination... The Pederneira Mine ▲ ▲ São José da Safira, Minas Gerais, Brazil Daniel Trinchillo Fine Minerals...Tallis). Introduction The Pederneira mine in Brazil qualifies as one of the world’s greatest tourmaline...specimen recently recovered at the Pederneira mine in Brazil. It was handed to me by long-time mineral dealer...parents’ home on his way back from a two-month tour of Brazil. The photo knocked my socks off! The dialog went |  | | Journal (issue) | | CRYSTAL CLASSICS Tourmaline | Coronel Murta, Brazil | 5.5 x 3.0 x 1.7 cm orders@crystalclassics.co...p22 Fluorite on Topaz, 9.5 cm Fazenda do Centro, Brazil Rudolf Watzl Freistadt, Austria Visit our website...biotite, muscovite, graphite, orthoclase, kyanite, sillimanite, pyrrhotite and tourmaline (Buddington, 1923)—is...Vermelhão (Saramenha) mine, Ouro Preto district, Minas Gerais, Brazil. Crystals having the rich orange color are...Medina pegmatite field, Pedra Azul district, Minas Gerais, Brazil. This crystal is among those found in 1997 |  | | Journal (issue) | | 2.Universidade Federal Rural do Rio de Janeiro, Brazil (UFRRJ) - fermamll@ufrrj.br 3.IRD caixa postal...REE- carbonate phosphates, niobium, carbonatite, Brazil. 1. Introduction The alkaline-carbonatite complex...southeast of the state of Goiás and westwards of Minas Gerais, Brazil. It outcrops at about 20 km NE of the city...city of Catalão, along the road connecting São Paulo and Brasilia and at 10 km NW of the better known...Field Guide Book, 5th Int. Kimberlite Conf., Araxá, Brazil ; CPRM, Brasilia, Sp. Publ., 1991, pp. 25-30. Elliott |  | | Journal (issue) | | SEPTEMBER–OCTOBER 2019 Articles The Golconda District, Minas Gerais, Brazil ..........................................TOURMALINE, 11.9 cm, from the Golconda I mine, Minas Gerais, Brazil Brice Gobin (Mineral Art) and Emanuele Marini...China, South Africa, Namibia, Chile, Peru, Bolivia, Brazil and Mexico. His first exchange of specimens with...September–October, 2019 The Golconda District Minas Gerais, Brazil Carlos Cornejo1 Andrea Bartorelli2 Wendell...important specimen-producing districts in all of Brazil. INTRODUCTION The Golconda Pegmatite Field is a |  | | Journal (issue) | | Brazilië (13 pp) waar vooral de pegmatieten van Minas Gerais aan bod komen. Het Zuid-Amerikaans continent...Fallstudie von Brasilianit aus Mendes Pimentel, Minas Gerais, Brazilien 125-128 Fluorit und Perimorphosen...mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil 297-303 Fluor-elbaite, a new mineral species...sillimaniet-groeve die uitgebaat werd door de Champion Sillimanite Corporation. Verder komt trolleiet nog voor op..."rubelliet" van de Cruzeiro mine, São José da Safira, Doce valley, Minas Gerais, Brazil 2. Ettringiet-kristal van |  | | Journal (issue) | | AND MARKETS Figure 9. Near Nova Era in Minas Gerais, Brazil, the Belmont mine operates using sophisticated...other mines in the area slowed (Weldon, 2006). Brazil witnessed a sustained slump in overall gemstone...in places like the United Arab Emirates, Russia, Brazil, India, and China—locations that would not have...discovered in Paraíba and Rio Grande do Norte states in Brazil in 1989 (Fritsch et al., 1990) and became known...plummeted, mining operations in key centers such as Brazil and Zambia curtailed or ceased production, though |  | | Catalog/List | | IMPERIAL TOPAZ Ouro Preto, Iron Quadrangle, Minas Gerais, Brazil Only one area on the planet produces Imperial...commercial quantities: the Ouro Preto district in Brazil. Colors of the material produced range from pale... 53043 AQUAMARINE Guaratinga (Jaquetô), Bahia, Brazil Large and stout enough to qualify as a ‘blunt instrument’...53079 FLUORAPATITE Panasqueira Mine, Couto Mineiro da Panasqueira, Covilhã, Castelo Branco District, Portugal...Jabuti Mine (Jaboti Mine), São Geraldo do Baixio, Doce Valley, Minas Gerais, Brazil What can you say about |  | | Journal (issue) | | synthetic moissanite 386 Gem Notes Large kunzite from Brazil| Marble-hosted ruby mine, Mogok, Myanmar|Secondary...from Idaho|Dumortierite inclusions in quartz from Brazil|Quartz sphere with large inclusion|Zawadi sapphires|Tourmaline...Kunzite Gem Crystal from Brazil The granitic pegmatites of Minas Gerais, Brazil, are well known for producing...was mined in 1998 from the Urucum pegmatite in Brazil. Photo by B. M. Laurs. (1962, p. 287) also reported...“flawless gems exceeding 300 carats have been cut in Brazil, and the author has cut a number of much larger |  | | Journal (issue) | | Chrysocolla chalcedony from Spain|Rhodochrosite from Brazil|Tourmaline mining in the DRC|Colour-zoned Cr- and...gemmologists that appeared in 2014 include tourmaline from Brazil, Tanzania and Nepal; gem-quality wurtzite and colour-change...Gemmology, 34(6), 2015 Gem Notes Rhodochrosite from Brazil Rhodochrosite usually occurs as translucent to...transparent rhodochrosite from another locality: Brazil. He obtained 12 damaged crystals that were reportedly...mined several years ago from a pegmatite in Minas Gerais State. Kaufman faceted 15 stones ranging from |  | | Journal (issue) | | inclusions of mica, talc, pargasite, cordierite, sillimanite, plagioclase and boehmite. The chemical composition...of mica (Figure 11), as well as cordierite, sillimanite, plagioclase and columnar crystals of pargasite...variety of minerals, including talc, plagioclase, sillimanite and others. We noted various patterns of partially...alteration of the host corundum. The presence of sillimanite and cordierite inclusions is consistent with...of the inclusions in milky diamonds from Juina, Brazil. The milky areas are filled with octahedral nanoinclusions |
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