 | Gonçalves, Leonardo, Alkmim, Fernando F., Pedrosa-Soares, Antônio C., Dussin, Ivo A., Valeriano, Claudio de M., Lana, Cristiano, Tedeschi, Mahyra (2016) Granites of the intracontinental termination of a magmatic arc: an example from the Ediacaran Araçuaí orogen, southeastern Brazil. Gondwana Research, 36. 439-458 doi:10.1016/j.gr.2015.07.015 | Journal (article/letter/editorial) | | From The Ediacaran Araçuaı́ Orogen, Southeastern Brazil Leonardo Gonçalves, Fernando F. Alkmim, Antônio...From The Ediacaran Araçuaı́ Orogen, Southeastern Brazil, Gondwana Research (2015), doi: 10.1016/j.gr.2015...SOUTHEASTERN BRAZIL SC RI P Leonardo Gonçalves1* 1 Departamento de Geologia, Escola de Minas, Universidade...Ouro, Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil; leonardogeologo@hotmail.com or leonardo@degeo...Escola de Minas, Universidade Federal de Ouro, Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil; ffalkmim@gmail |  | | 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...lavender crystals are found at Aracuaí, Minas Gerais, Brazil. Distinctive spherical and stalactitic masses |  | | Journal (issue) | | epidote deposits of the Capelinha Region, Minas Gerais, Brazil ......................................315...epidote on matrix, 4.4 cm, from Capelinha, Minas Gerais, Brazil. Gail and Jim Spann collection; Tom Spann...w. FineMineral.com Tourmaline Cruzeiro Mine, Brazil. 19.5 cm Fine Minerals International proudly invites...EPIDOTE DEPOSITS OF THE CAPELINHA REGION, MINAS GERAIS, BRAZIL Andrea Bartorelli1 Carlos Cornejo2 Mario...mid-1960s, the Capelinha region in the State of Minas Gerais, Brazil, has become world-famous for producing beautiful |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta Yellow Black 1 Delev Ilia Deleff...UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW 2004 3 Cyan Magenta Yellow Black...MINERAL TREASURES OF BRAZIL 76 85 AN OUTLINE OF THE MINERAL RESOURCES OF BRAZIL ORIGIN OF GIANT CRYSTALS |  | | 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) | | from Três Marias Lake and its significance, Minas Gerais, Brazil ..........................................added with sewage sludge and heavy metal salts (Brazil) …………………………………………………….…. 43 Hernando BAGGIO,...disasters: the 2011 - 2012 events in Minas Gerais State - Brazil ……………... 47 Najla LASSOUED, Mohamed...susceptibility in southeastern Rio de Janeiro, Brazil ….. 55 Márcia Andréia da SILVA NUNES, Adolf Heinrich...Parc and its sourroundings, Espírito Santo State, Brazil ………………………………………………………….. 61 Ahmed TOUIL, Mohamed |  | | Journal (volume) | | example using emerald mining waste from Minas Gerais, Brazil ..…………………………………...........................of the Formoso River basin, Buritizeiro, Minas Gerais, Brazil ........... 79 Mihaela V. ADUMITROAEI...CONSERVATION AREAS: CASE STUDY OF CAPARAÓ NATIONAL PARK/BRAZIL Isabela Claret TORRES1, William Fortes RODRIGUES2...Essaid BILAL4 1, 2 UMFG- Federal University of Minas Gerais, IGC-Geological Institute, Graduation Program...Carlos, 6627 CEP: 31270-901 Belo Horizonte – MG/Brazil 3 NGqA-Environmental Research Center, IGC-Geological |  | | 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...Field Guide Book, 5th Int. Kimberlite Conf., Araxá, Brazil ; CPRM, Brasilia, Sp. Publ., 1991, pp. 25-30. Elliott...Morbidelli L., 1990. Carbonatite complexes from Brazil: a review. J. South Amer. Earth Sc., 3-1 (1990) |  | | Journal (issue) | | • Rhodonite of facet and cabochon quality from Brazil • Spessartine and almandine-spessartine from Afghanistan...reddish brown hematite flakes, growth zoning, and Brazil-law twinning, all of which provide visual clues...effect. Like amethyst from other localities (e.g., Brazil), some material from Four Peaks is heated to lighten...In transmitted light between crossed polarizers, Brazil-law twinning was obvious in all the samples studied...(2002) Natural amethyst from the Caxarai mine, Brazil, with a spectrum containing an absorption peak |  | | Journal (issue) | | liddicoatite from other world localities (i.e., Brazil, Canada, “Congo,” Czech Republic, Mozambique, Nigeria...kaolin clay and contain assemblages of quartz, microcline feldspar (amazonite), albite feldspar (cleavelandite)...Koivula and Kammerling [1990]), reportedly from Minas Gerais, TABLE 1. Properties of liddicoatite-elbaite...dDunn et al. (1977) GEMS & GEMOLOGY SPRING 2002 Brazil; one polished slice from Vietnam; one polished...various colors have been seen in tourmaline from Brazil, Mozambique, and elsewhere, although these crystals |  | | Journal (issue) | | potassium feldspars—sanidine, orthoclase, and microcline—where the three names reflect the degree of silicon...em-quality aquamarine has been produced mainly from Brazil and Africa (Bank et al. 2001; Webster, 2002), as...an alkali-poor beryl from Serra Branca (Goias, Brazil): Spectroscopic characterization. American Mineralogist...(aquamarine variety) from pegmatites of Minas Gerais, Brazil. Physics and Chemistry of Minerals, Vol... Figure 2. This semitransparent morganite from Brazil weighs an impressive ~22.4 kg, and was part of |  | | Book (edition) | | m (26 ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality tourmaline...acid members of the volcanic province in southern Brazil and Uruguay, and the fire opals occurring in small...amethyst from volcanic rocks in Rio Grande do Sul, Brazil. The amethyst crystals are more strongly coloured...Alluvial sands containing diamonds near Sopa, Minas Gerais, Brazil The above discussion has concentrated on...worldwide but some of the most important are in Brazil, where the gem-quality deposits are associated |  | | Journal (issue) | | mine, Bolivia • Andradite from China • Barite from Brazil • Gem hanksite • Lepidolite beads • “Soufflé” freshwater...freshwater cultured pearls • “Churrasco quartz” from Brazil • Cat’s-eye rhodonite • Large H-rich diamond •...Online: Spring 2006 “Paraíba”-type Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting...Iron Colorants in Gem Tourmalines Andalusite from Brazil Peridot from Sardinia, Italy Fall 2007 The Transformation...Tourmalines from New Deposits in Paraíba State, Brazil Type Ia Diamond with Green-Yellow Color Due to |  | | Journal (issue) | | Northwest Territories, Canada; Salininha in Bahia, Brazil; Ma- 108 EMERALDS FROM BYRUD, NORWAY lipo in...composition, consisting mainly of K-feldspar (microcline), and were intruded during the Permian Period...shales by the mineralizing fluids. In addition to microcline, the pegmatites typically contain quartz and...distinctive: Emeralds from other deposits (Salininha, Brazil, and Lened, Canada) also can show high V/Cr ratios...Brésil et de Colombie [Origin of emerald deposits in Brazil and Colombia]. Thèse d’Habilitation, Institut National |  | | Journal (issue) | | and a 3.20 ct Paraíba tourmaline trillion from Brazil. The rings and loose stones are courtesy of Omi...California (Fisher, 2011) in the U.S. as well as Brazil (Proctor, 1985a,b; Koivula and Kammerling, 1989)... Pink elbaite with gray fibers; Cruzeiro mine, Brazil (see Dutrow and Henry, 2000) BD-S4 Black schorl...crystals; Brumado, Brazil BD-S6 Cluster of small light green uvite crystals; Brumado, Brazil a GIA samples...elbaite (BD-S3) from the Cruzeiro mine in Minas Gerais, Brazil. D: Schorl (BD-S4) from Larsemann Hills |  | | Journal (issue) | | THE FAZENDA BONFIM REGION, RIO GRANDE DO NORTE , BRAZIL J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger...Science, and Technology of Rio Grande do Norte in Brazil. Jan Kanis, a consulting geologist specializing...orange-red 2. Emeralds from the Fazenda Bonfim region of Brazil can be distinguished from other emeralds found...show in Tucson, Duarte & Bastos Ltd. from Teófilo Otoni, Brazil, exhibited a 12.50 ct intense blue cat’s-eye...cabochon (figure 1). The stone was said to be from Brazil. It had a neon blue bodycolor and a very sharp |  | | Journal (issue) | | spheres known as ballas diamond, found in the Urals, Brazil, and South Africa. Natural aggregates have varying...spessartine, fluorite, albite (“cleavelandite”), and microcline. Rough and cut specimens of the aquamarine were...Choudhary. explorers) helped locate various gems in Brazil during the 1600s, which eventually led to the important...Fallbrook, California). These include Brazil (Ouro Preto and Teófilo Otoni), California (San Diego County)...lavas from the southern Paraná volcanic province, Brazil and Uruguay. By L. A. Hartmann et al. [Keith A |  | | Journal (issue) | | rhodochrosite, 2.59 ct Paraíba tourmaline from Brazil, 8.51 ct Sri Lankan spinel, 13.00 ct Madagascar...“padparadscha” sapphire, 2.12 ct Paraíba tourmaline from Brazil. Photo of stones © GIA and Harold & Erica Van Pelt;...a poster on golden rutilated quartz from Bahia, Brazil. Near right: Designer Michael Bondanza discusses...2006 97 Urals in Russia, northern Minas Gerais and Bahia in Brazil, Nepal, and Arkansas in the U.S. •...Typical localities: Herkimer in New York, Bahia in Brazil, Sichuan in China, and Baluchistan in Pakistan |
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Teófilo Otoni, Minas Gerais, Brazil