 | | Report (chapter) | | built heritage of the interior of Brazil: the use of stone in Minas Gerais A. G. COSTA Department of Geology...University of Minas Gerais, Av. Antônio Carlos 6627, 31270 – 901, Belo Horizonte (Minas Gerais), Brazil (e-mail:...costa@uol.com.br) Abstract: The cultural heritage of Brazil built with natural stone is expressive and shows...interior, especially in the current State of Minas Gerais, a large number of historic buildings can be...steatites and schists in historic buildings in Brazil, which is part of a research project in progress |  | | Report (issue) | | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International... Metamorphic Rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE...THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation...the Departmento Nacional da Produqao Mineral of Brazil under the auspices of the Agency for International...Ferrifero, Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological |  | | Journal (article/letter/editorial) | | edu Kyanite Downloaded by [Laurentian University] at 02:10 27 October 2013 Minas Gerais, Brazil O ...times quite beautiful rock-forming minerals is kyanite. It is one of a triad of aluminosilicates that...and described from many hundreds of localities, kyanite is particularly well known as a valuable industrial...especially familiar to collectors because the kyanite-rich “quartzite” once exploited at Graves Mountain...2008). Surprisingly attractive, reasonably priced kyanite specimens are traditionally available from several |  | | Journal (article/letter/editorial) | | evolution of the Quadrilfitero Ferrifero, Minas Gerais, Brazil Farid Chemale Jr.a, Carlos A. RosiCreb and...Sa’oLeopoldo, RS, Brazil bCentro de Pesquisas M. T. da Costa/IGC, UniversidadeFederal de Minas Gerais. Pampulha...Pampulha, 31270-000 Belo Horizonte, MC, Brazil ‘Departamento de Geologia, UniversidadeFederal de Ouro Preto...Preto. Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil Received February 3, 1992; revised version accepted...regional synclines in the overlying Rio das Velbas and Minas supergroups strata. Such regional synclines are |  | | Journal (article/letter/editorial) | | PRECAMBRIAN IN THE SOUTHERN SERRA DO ESPINHA~O, MINAS GERAIS, BRAZIL A. HOPPE Geologisch-Paliiontologisches...Precambrian in the southern Serra do Espinha~o, Minas Gerais, Brazil. PrecambrianRes, 13: 275--296. Middle Precambrian...tectonics and metamorphism. An Archaean basement (Pre-Minas Supergroup) consists of an older granitic unit and...starts north of the Quadril~tero Ferrffero of Minas Gerais and extends N--S for 1200 km as far as Bahia...Pflug and Renger, 1973): (c) post-Minas, (b) Minas, (a) pre-Minas. Following the recommendations of the |  | | Journal (article/letter/editorial) | | samplesare from the Quadiil6tero Ferifero of Minas Gerais, divided as follor'vs:4 from phyllites, 4 from...metamorphic grade quartz-rich rock. For comparison, 1 kyanite from a magnesite deposit in Bahia and 4 from h...high-metamorphic-grade areas in Minas Gerais were also analYzed. Associateclrvith the kyanite in the phyllite is quartz...without chlorite, chloritoid, ancl pyrophyllite. Kyanite in veins is associated u'ith quartz I'ith or $..."recrystallization pegmatite." Compared to the other samples,kyanite from phyllite has a great relative abundance o{ |  | | Journal (article/letter/editorial) | | Northern Segment of the Ribeira Belt, Eastern Minas Gerais, SE Brazil Antonio Gilbert0 Costa C P M T C / I G...a m p u s P a m p u l h a , Relo Horizonte, MG, Brazil e-mail: agcosta @oraculo.lcc. ufnzg.Dr (Manuscript...Abstract Granulite rocks are exposed in eastern Minas Gcrais, Brazil. Its early neoproterozoic evolution is characterised...high grade metamorphism, tectonic settings, Minas Gerais, Brazil Introduction Regional geologic outline...study area (Fig.1) is characterized, in eastern Minas Gerais, BraLil, by rocks of distinct crustal domains |  | | Report (issue) | | and Ore Deposits of the Alegria District, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J...the Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International...and Ore Deposits of the Alegria District, Minas Gerais, Brazil By CHARLES H. MAXWELL GEOLOGY AND MINERAL...MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J Prepared...the Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International |  | | Journal (article/letter/editorial) | | system south of the São Francisco Craton, southeast Brazil Mario da Costa Campos Neto a, Renaud Caby b, *...Geociências, Universidade de São Paulo, Sao Paulo, Brazil b Laboratoire de Tectonophysique, Université de...nappe), underlain in sequence by a high-pressure kyanite granulite nappe, an amphibolite facies metapelite...related to the passive margin of the craton. The kyanite granulites crystallized ca 13 kbar, 750°C and have...eclogites from subduction-related metamorphism and kyanite granulites from early extrusion of subducted continental |  | | Report (issue) | | Resources of the Pico de Itabirito District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Resources of the Pico de Itabirito District Minas Gerais, Brazil By ROBERTS M. WALLACE GEOLOGY AND MINERAL...MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-F Prepared...the Departamento Nacional da Producao Mineral of Brazil under the au-spices of the Agency for International |  | | Book | | ltatiaia, Conseilheiro Pena, Governador Valadares, Brazil (Roger Titeux collection, France) 4 inches. Above:...inches. Right: Rutile in quartz, lbitiara, Bahia, Brazil (Yves Gillet collection, France) 1.2 inches. Preceding...Preceding pages: A Tourmaline, Minas Gerais, Brazil (4.2 inches) B Tourmaline, Queen Mine, San Diego County...order to extract the gems. Such was the case in Brazil with diamonds; it is still used in the deposits... as in the case of the amethysts of Uruguay or Brazil. Unlike the precious and semi-precious stones, |  | Vial, D.S., Duarte, B.P., Fuzikawa, K., Vieira, M.B.H. (2007) An epigenetic origin for the Passagem de Mariana gold deposit, Quadrilátero Ferrífero, Minas Gerais, Brazil. Ore Geology Reviews, 32 (3) 596-613 doi:10.1016/j.oregeorev.2005.03.017 | Journal (article/letter/editorial) | | Mariana gold deposit, Quadrilátero Ferrífero, Minas Gerais, Brazil D.S. Vial a,⁎, B.P. Duarte b , K. Fuzikawa...Vale do Rio Doce, BR381, Km 459, Santa Luzia, MG, Brazil Faculdade de Geologia da Universidade do Estado...Francisco Xavier, 524, Maracanã, Rio de Janeiro, RJ, Brazil c CDTN-Centro de Desenvolvimento da Tecnologia...Horizonte, MG, Brazil d Companhia Vale do Rio Doce, BR262, Km 296, Santa Luzia, MG, Brazil b Received...that juxtaposes the itabirite (Lower Proterozoic Minas Supergroup) over other units. This shear zone/thrust |  | | Journal (article/letter/editorial) | | hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic significance F...deposits of high-grade, compact hematite of QF, Minas Gerais, Brazil, averaging 68%Fe and < 1%SiO2, totalling...Janeiro), Ilha do Fundão, Rio de Janeiro RJ 21949-900, Brazil (frpires@geologia.ufrj.br). Based on a contribution...hematite ore at the Quadrilátero Ferrífero, Minas Gerais, Brazil and its possible genetic significance 1...compact hematite at Quadrilátero Ferrífero, Minas Gerais, Brazil (or silica) by iron oxides’ in the itabirite |  | | Journal (article/letter/editorial) | | Relations in Iron Ores from the Iron Quadrangle, Brazil: The Correlation of Oxygen Isotope Variations with...hematite-rich ore bodies in the Iron Quadrangle, Brazil. The area studied can be divided into two different...peak metamorphic conditions of the Proterozoic Minas metamorphism 2,000 m.y. ago. Iron ores which have...quartz iron formations - known as itabirites in Brazil - appears to have been a dominant process in the...such as those found in the Iron Quadrangle, Minas Gerais, Brazil. While these ores comprise only a few per |  | | Journal (article/letter/editorial) | | mineral deposits in the Precambrian of Eastern Minas Gerais, Brazil N. Angeli ~ and A. Choudhuri 2 1 Departamento...Rio Claro S.P.,Brazil 2 Instituto de Geoci@ncias,UNICAMP, 13.100 Campinas -S.P., Brazil Abstract. Based...their mineral deposits from eastern Minas Gerais in southeastern Brazil are generally outlined to form a...occur at Ipanema, C6rrego Novo, Bela Vista ,de Minas, Rio Pomba and Liberdade. These ultramafic bodies...Introduction Almeida et al. (1981) have subdivided Brazil into various Precambrian provinces according to |  | Guimarães, Frederico Sousa, de Freitas, Monica Elizetti, Rios, Francisco Javier, Pedrosa, Tércio Assunção (2019) Mineralogical characterization and origin of uranium mineralization in Witwatersrand-like metaconglomerate of the Moeda Formation, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 106. 423-445 doi:10.1016/j.oregeorev.2019.01.016 | Journal (article/letter/editorial) | | of the Moeda Formation, Quadrilátero Ferrífero, Brazil Frederico Sousa Guimarães, Monica Elizetti de Freitas...of the Moeda Formation, Quadrilátero Ferrífero, Brazil, Ore Geology Reviews (2019), doi: https://doi.org/10...of the Moeda Formation, Quadrilátero Ferrífero, Brazil Frederico Sousa Guimarãesa,b (fredsgguimaraes@gmail...Federal de Minas Gerais-UFMG, Campus Pampulha, 31270-901, Belo Horizonte, Minas Gerais, Brazil. b Corresponding...is the basal unit of the Minas Supergroup in the Quadrilátero Ferrífero, Brazil, and has quartz-pebble |  | | Journal (article/letter/editorial) | | Volume 69, pages 298-306, 1984 Entropies of kyanite, andalusite,and sillimanite: additional constraintson...heat capacities of kyanite (Minas Gerais, Brazil), andalusite (Espirito Santo, Brazil), and sillimanite...30-r0.13,91.39-+0.14, and 95.79-ro.l4J/(mol.K) for kyanite, andalusite,and sillimanite, respectively. our...the range ? < 18 K are 1lfi), E55,and 730K for kyanite, andalusite,and sillimanite respectively. For andalusite...univariant reaction system. The Al2SiO5 polymorphs, kyanite, andalusite, boundaries. The univariant reaction |  | 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) | | ophiolite-bearing accretionary wedge (Araçuaí orogen, SE Brazil): New data for Cryogenian plagiogranite and metasedimentary...ophiolite-bearing accretionary wedge (Araçuaí orogen, SE Brazil): New data for Cryogenian plagiogranite and metasedimentary...ophiolite-bearing accretionary wedge (Araçuaí orogen, SE 2 Brazil): New data for Cryogenian plagiogranite and metasedimentary...Chemaled,1 6 7 a Universidade Federal de Minas Gerais, Programa de Pós-Graduação em Geologia, CPMTC-IGC-UFMG...6627, Pampulha, 31270-901, Belo Horizonte, MG, Brazil 9 b Instituto de Geociências, Universidade de |  | | Journal (article/letter/editorial) | | muscovite crystals, to 3 cm, on albite, Galileia, Brazil. T Taxonomy of the Mica Group The mica minerals...about 3 cm; Riacho Genipapo, near Aracuaí, Minas Gerais, Brazil. All photos by the author of specimens in...forming a 10-cm rosette, Jose Pinto mine, Minas Gerais, Brazil. Table 3. Interlayer-deficient micas. Dioctahedral...quartz at Riacho Genipapo, near Aracuaí, Minas Gerais, Brazil (Cassedanne and Cassedanne 1981). A spectacular...Peninsula, Russia (where it is associated with kyanite crystals). Well-formed silverygreen crystals of |  | Chauvet, A., Faure, M., Dossin, I., Charvet, J. (1994) A three-stage structural evolution of the Quadrilátero Ferriífero: consequences for the Neoproterozoic age and the formation of gold concentrations of the Ouro Preto area, Minas Gerais, Brazil. Precambrian Research, 68 (1) 139-167 doi:10.1016/0301-9268(94)90069-8 | Journal (article/letter/editorial) | | gold concentrations of the Ouro Preto area, Minas Gerais, Brazil A. C h a u v e t , M . F a u r e , I. D...Craton (Brazil), where three major Proterozoic supracrustal units (the "Rio das Velhas", "Minas" and "Itacolomi"...Main Mineralized Contact (located between the "Minas" and "Rio das Velhas" Supergroups), is found within...Introduction The Quadril~itero Ferrifero (Minas Gerais, Brazil), like most of the Archaean greenstone belts...deposited during the Palaeoproterozoic (i.e., "Minas" Supergroup, 2420_+25 Ma and 2050_+ 230 Ma by the |  | | Journal (article/letter/editorial) | | Take Along. May p. 185; The Dubeski, Bernard M. Kyanite, Fuchsite. Quality of Mineral Specimens. JulyJuly-Aug...Gem Collections. Nov., p. 441 Kase, Linda. Minas Gerais, Brazil-A Happy Hunting Ground. Jan.-Feb., p. 22...Arkansas. Woodland G. Shockley. Dec, p. 495 Brazil—Minas Geras, Brazil—A Happy Hunting Ground. Linda Kase. Jan...from Conejos County, Colorado. Amethyst—Minas Gerais, Brazil-A Happy Richard S. Mitchell. Oct., p. 394...Collector. John Reiner. p. 237 June, p. 258 Fuchsite—Kyanite, Fuchsite. Bernard M. Barite—Minerals from Thomaston |  | | Journal (article/letter/editorial) | | northern Serra do Espinhac o (State of Bahia, Brazil) G. Morteani1 and D. Ackermand2 1 Geoexpert International...(Northern Serra do Espinhac o, State of Bahia, NE Brazil) about 10 km west of the town of Boquira. Sky blue...thermometry on quartz and hematite and the stability of kyanite, augelite, trolleite and berlinite allow to estimate...world-wide e.g. from the present study area in Bahia (Brazil) by Cassedanne and Franco (1966), Cassedanne et...and Visser et al. (1997), from Diamantina, Minas Gerais (Brazil) by Horn et al. (1996) and Morteani and |  | | 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 |  | | 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...Monte Campione, Tessin, Switzerland, with a tiny kyanite crystal on the termination. Robert J. Lauf specimen...associated with almandine, muscovite, biotite, kyanite, and quartz. In higher-grade metapelites, it may...and a close association with gemmy, bright blue kyanite (sometimes in parallel growth). A high percentage |  | | Journal (article/letter/editorial) | | . . . . . . . . . . . . . . . . . . . . . 2.1. Brazil . . . . . . . . . . . . . . . . . . . . . . . ...Ludwig von Eschwege – surveyed the Minas Gerais Region of Brazil (Eschwege, 1822, pp. 17–21). The name...of the quartzite-dominated mountain ranges in Minas Gerais. Eschwege applied the name not only to flexible...decline since the early 1700 s and their discovery in Brazil in 1725 was the beginning of a new diamond rush...Brazilian National Museum, re-investigated the Minas Gerais area more thoroughly (Derby, 1882) he confirmed |
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Barra do Salinas District, Coronel Murta, Minas Gerais, Brazil