 | Gonçalves, Guilherme O., Lana, Cristiano, Buick, Ian S., Alkmim, Fernando F., Scholz, Ricardo, Queiroga, Glaucia (2019) Twenty million years of post-orogenic fluid production and hydrothermal mineralization across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil. Lithos, 342. 557-572 doi:10.1016/j.lithos.2019.04.022 | Journal (article/letter/editorial) | | across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalves...across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil, LITHOS, https://doi...across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalvesa... Universidade Federal de Ouro Preto, Escola de Minas, Departamento de Geologia, Campus Morro do Cruzeiro...South Africa. ACCEPTED MANUSCRIPT Abstract The Araçuaí orogen (AO) is a hot orogenic system that is known |  | | Journal (article/letter/editorial) | | Minerais, Universidade Federal de Mato Grosso, Cuiabá, Brazil *Corresponding author, e-mail: rubia@cdp.ufmt.br...Universidade Federal de Ouro Preto, Ouro Preto, Brazil e-mail: hanna@degeo.ufop.br 3 Geochemical Laboratory...Araçuai and western Governador Valadares in Minas Gerais) were analyzed for major, minor and trace elements...trace elements, pegmatite, magmatic differentiation, Brazil. Introduction Muscovite is a common rock-forming...districts, located in the Araçuaí and Governador Valadares regions in Minas Gerais State (Fig. 1) were collected |  | | Journal (article/letter/editorial) | | tourmaline, topaz, spodumene, and spessartine. Historic localities are found in Brazil, Madagascar,...beryl, tourmaline (see Pezzotta and Laurs 2011), topaz, spodumene, and spessartine (FIGS . 1, 2; TABLE...(Simmons 2007). Historically, pegmatite deposits in Brazil, Madagascar, Russia, and the United States have...Acadêmico Hélio Ramos, 54740-530, Recife, Pernambuco, Brazil E-mail: beurlen@ufpe.br E LEMENTS , V OL . 8,...left, pink morganite beryl (Brazil, 100.99 ct, 35.96 × 25.69 mm), blue topaz (Zimbabwe, 25.67 ct), green |  | | 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 |  | da Silva, L.C., Pedrosa-Soares, A.C., Teixeira, L.R.,, Armstrong, R. (2008) Tonian rift-related, A-type continental plutonism in the Araçuaí Orogen, eastern Brazil: New evidence for the breakup stage of the São Francisco–Congo Paleocontinent. Gondwana Research, 13 (4) 527-537 doi:10.1016/j.gr.2007.06.002 | Journal (article/letter/editorial) | | A-type continental plutonism in the Araçuaí Orogen, eastern Brazil: New evidence for the breakup stage...Brasília, DF, Brazil Conselho Nacional de Desenvolvimento Científico e Tecnológico-CNPq, Brazil c CPMTC-IGC-UFMG...Antônio Carlos, 6627, Belo Horizonte 31270-901 MG, Brazil Research School of Earth Sciences, Mills Road,...stage of the precursor basin of the Araçuaí Orogen (Eastern Brazil). The suite includes batholitic plutons...response to the Neoproterozoic collage of the Araçuaí Orogen against the São Francisco Cratonic margin |  | | Journal (issue) | | the Espirito Santo Pegmatite District, Eastern Brazil.. ......697 by M. L. Chaves, A. Bartorelli & C...sixling twin, 6.3 cm, from ItaguaÇu, Espirito Santo, Brazil. William Larson collection, ex Edward Gübelin,...completed the program at the Federal University of Minas Gerais. He worked in the Magisterium of Extractive...recalled by Wendell Wilson in Mineral Collections of Brazil (Cornejo and Bartorelli, 2020): The second issue...contained a one-page editorial (“Location – Minas Gerais, Brazil”) by editor John White, museum specialist |  | | Journal (issue) | | spinel from Badakhshan, Afghanistan| Windmill-cut topaz from Namibia|Tourmaline from Masisi, DRC|Yellow...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,...Swiss Blue topaz, 7.99 ct amethyst, 3.29 ct tourmaline, 2.40 ct aquamarine, 1.12 ct Imperial topaz and 4.84...corundum, alexandrite, tanzanite, zircon, Imperial topaz and emerald (and its most common fillers). The unit |  | | 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 (article/letter/editorial) | | including tourmaline, garnet, and rarely gahnite, topaz, or andalusite. Lithium Micas Overview Micas are...miarolitic cavity, Telirio mine, Linopolis, Minas Gerais, Brazil. (c) Left: Lithiophilite (7 × 5 × 5 cm)...higher-fluorine environments in which topaz crystallizes. Topaz is normally found in miarolitic cavities...the composition of amblygonite that occurs with topaz in granites of Western Europe, those magmas contained...Morgan, and Wolf 2001). For the most part, however, topaz-rich pegmatites are poor in Li and notably depleted |  | Andrade, M. B., Atencio, D., Filho, L. A. D. M., Ellena, J. (2011) TThe structure of a microlite-group mineral with a formula near NaCaTa2O6F from the Morro Rendondo Mine, Coronel Murta, Minas Gerais. The Canadian Mineralogist, 49 (2) 615-621 doi:10.3749/canmin.49.2.615 | Journal (article/letter/editorial) | | FROM THE MORRO REDONDO MINE, CORONEL MURTA, MINAS GERAIS, BRAZIL Marcelo B. ANDRADE§ Instituto de Física...Trab. São-carlense 400, 13560-970 São Carlos, SP, Brazil Daniel ATENCIO Instituto de Geociências, Universidade...SP, Brazil Luiz A.D. MENEZES FILHO Instituto de Geociências, Universidade Federal de Minas Gerais, Avenida...Antônio Carlos, 6627, 31270-901 Belo Horizonte, MG, Brazil Javier ELLENA Instituto de Física de São Carlos...Trab. São-carlense 400, 13560-970 São Carlos, SP, Brazil Abstract We present electron-microprobe and single-crystal |  | | Journal (article/letter/editorial) | | characteristic of gem tourmaline found in Pederneira, Minas Gerais, Brazil. SPECIMEN FROM DANIEL TRINCHILLO ; PHOTO...TOBER 2011 Faceted elbaite stones from Paraíba, Brazil (2.59– 3.68 ct; the stone on the left is about...discovery in the late 1980s in the Paraíba State of Brazil (e.g. Fritsch et al. 1990; Beurlen et al. 2011...Territories, Canada O’Grady Lake (1) Minas Gerais, Brazil Araçuaí district Conselheiro Pena district ...♦ (2) Paraíba, Brazil São José da Batalha area ▼ (3) Rio Grande do Norte, Brazil Parelhas area |  | De Oliveira, Ester Figueiredo, Castañeda, Cristiane, Eeckhout, Sigrid Griet, Gilmar, Messias Menezes, Kwitko, Rogério Ribeiro, De Grave, Eddy, Botelho, Nilson Francisquini (2002) Infrared and Mössbauer study of Brazilian tourmalines from different geological environments. American Mineralogist, 87 (8) 1154-1163 doi:10.2138/am-2002-8-914 | Journal (article/letter/editorial) | | N. CP 941 CEP 30123-970, Belo Horizonte, Minas Gerais, Brazil 2 Instituto de Geociências, Universidade...3173 CEP 30140-970, Brasília, Distrito Federal, Brazil 3 Department of Subatomic and Radiation Physics...de Ouro Preto, CEP 35400-000 Ouro Preto, Minas Gerais, Brazil 5 Companhia Vale do Rio Doce, CVRD, BR 262-Km...P.O. Box 09 CEP 33010-970, Santa Luzia, Minas Gerais, Brazil ABSTRACT Infrared (IR) spectra in the OH...and hydrothermal deposits in the state of Minas Gerais, Brazil. In the magmatic environment, samples of |  | | Journal (article/letter/editorial) | | tourmalines from the Mata Azul pegmatitic field, Central Brazil Simone F. da Silva1,2*, Márcia A. Moura2, Hudson...D. Ardisson3 1 2 3 * Instituto Federal de Minas Gerais, Campus Congonhas, Avenida Michel Pereira de...Souza, 3007, Campinho, 36415-000 Congonhas, Minas Gerais, Brazil; simone.geologia@gmail.com Instituto de...Asa Norte, 70910-900 Brasília, Distrito Federal, Brazil Centro de Desenvolvimento de Tecnologia Nuclear...Mário Wernec, 30161970, Belo Horizonte, Minas Gerais, Brazil Corresponding author This study characterizes |  | | Journal (article/letter/editorial) | | 201-C, Salvador, 40170-290, Bahia, Brazil b Geological Survey of Brazil (CPRM)-Av. Pasteur, 404, Urca, Rio...Rio de Janeiro, 22290-240, Rio de Janeiro, Brazil Received 2 May 2004; accepted 1 May 2006 Available...from Venezuela (Imataca Complex), and others from Brazil (Quadrilátero Ferrífero, Itabira, and Guanhães)...mentioning that the Serra dos Carajás Basin in northern Brazil is older. It contains the worlds' largest iron...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit |  | | Journal (issue) | | cat's-eyes Treated jadeite bead necklace Emeralds from Brazil Famous diamond Pink conch pearl Color-change sapphire...Maxixe beryl, a material first found in 1917 in Brazil that faded on exposure to sunlight (also see Nassau...synthetic amethyst on the basis of the presence of Brazil-law twinning in the former (figure 16). While this... 40, 42. Crowningshield G.R. (1981) Irradiated topaz and radioactivity. Gems & Gemology, Vol. 17, No...phantom quartz locality near Buenopolis, Minas Gerais, Brazil. The specimen was obtained from Kevin Lane |  | | Journal (issue) | | gemstone jewelry trends unveiled in Las Vegas 42 Brazil Governador Valadares show continues to thrive ...India Bhadresh Pandit, Tanzania Clement Sabbagh, Brazil Capt. Ramji Sharma, Japan Avner Sofiov, Israel...gemstone work C lement Sabbagh, the ICA Director in Brazil, received a diploma on behalf of the ICA from the...the municipality of Teofilo Otoni in Brazil which passed a motion thanking ICA via its president Andrew...community in the province of Minas Gerais which is the main region of Brazil for gemstone production. The |  | | Catalog/List | | Compared to the output of place such as Afghanistan or Brazil, the production from Elba is relatively small....59 BRAZIL 73060 TOPAZ var. IMPERIAL TOPAZ Ouro Preto, Iron Quadrangle, Minas Gerais, Brazil This specimen...specimen is a single Imperial Topaz crystal over 2.5 inches (6.35 cm) in length, displaying extremely...market is but a very small fraction of the overall Topaz production on the planet. Overall measurements:...var. ROSE QUARTZ Galiléia, Doce Valley, Minas Gerais, Brazil Here is a cockscomb arrangement of Rose |  | | Journal (issue) | | Namibia, as well as Madagascar), South America (Brazil and Colombia), central and southern Asia (Sri Lanka...Pakistan; and pink to red tourmalines from Nigeria and Brazil. Diamond was mined in northern Canada for the first...nephrite], opal, peridot, quartz, spinel, tanzanite, topaz, and tourmaline). Locality information is both summarized...mining also continued at traditional sources in Brazil and Africa. Large quantities of Brazilian emeralds...the early ’90s, particularly from Goiás and Minas Gerais (primarily the Nova Era area). By the middle |  | | Journal (article/letter/editorial) | | mafic (mostly anorthositic) rocks, and Carajás, Brazil. The end of the Paleoproterozoic and Mesoproterozoic...A-type granites are common in Atlantic provinces of Brazil and also in Africa (e.g., Algeria). Phanerozoic...Permo-Triassic Western Mediterranean province. The Cenozoic topaz rhyolites and synextensional granites of the western...tin-polymetallic deposits particularly in South America (Brazil) and such occurrences are also found in Missouri...visited the Pitinga Mine in northern Amazonia, Brazil, August 2–5, 2006 (Fig. 2). The trip focused on |  | | 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...PRODUCTION AND MARKETS of irradiated “London Blue” topaz had come from NRC-licensed suppliers. Because there |  | | Journal (article/letter/editorial) | | GRANITES IN THE ITU GRANITE PROVINCE, SOUTHEASTERN BRAZIL: PETROLOGICAL AND TECTONIC SIGNIFICANCE Valdecir...Universidade de São Paulo, São Paulo, CEP 05508–080, Brazil Abstract The 590–580 Ma Itu Granite Province (IGP)...edge of the Apiaí–Guaxupé Terrane in southeastern Brazil. Typical components are subalkaline A-type granites...Mantiqueira Orogenic System, Itu granite province, Brazil. Sommaire La province granitique de Itu, en formation...Neoproterozoic Ribeira Fold Belt in southeastern Brazil (Vlach et al. 1990). Interest in the province was |  | | Journal (issue) | | shortly after the discovery of major deposits in Brazil. The locally mined diamonds were fashioned in India...product. By the time diamond mining started in Brazil in 1730, production from India had declined to...discovered in only two countries: Brazil (three deposits in Minas Gerais) and Madagascar (Maschmeyer and...yield 1+ ct faceted stones is from the Araçuaí region of Minas Gerais (Kammerling and Fritsch, 1993); the...quantities have been found in the Araçuaí region of Minas Gerais, Brazil. Note the color zoning evident |  | | Book | | potential deposits of SiO2 raw materials in Argentina, Brazil, Germany and Norway. The third part of the book...collaboration between scientists from Australia, Brazil, Canada, Germany, Norway, Switzerland and the USA...Color-Enhancing of Gemological Crystalline Quartz in Brazil . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . 6.3.3 Quartz Color-Enhancing in Brazil. . . . . . . . . . . . . . . . . . . . . . 139...50740-530, Brazil Mario L. S. C. Chaves Departamento de Geologia, IGC, Universidade Federal de Minas Gerais |  | | Journal (issue) | | Mariposa County, California • Iolite from northeastern Brazil • Kyanite widely available in Tucson • “Moonstone”...moonstone • Pezzottaite in quartz • Treated-color topaz from Pakistan • Conference reports • Faceted Burmese... This material reportedly was from Brazil’s Minas Gerais region. The stones contained additional inclusions...part of a larger parcel that had been purchased as topaz and then sent to be treated by a “diffusion” process...dissolution or etching. Whether or not this treatment of topaz (which uses cobalt or a cobalt oxide) is actually |  | | Book (edition) | | Diamond II Ruby and Sapphire Beryl Chrysoberyl Spinel Topaz Tourmaline The Garnets Feldspar Group Zircon Peridot...(Figure 1.8a) lined with such crystals as beryl and topaz, or they may coalesce into pools or sheets and cool...from the Mourne Mountains, Northern Ireland. A topaz with good crystal form projects into a cavity bordered...m (26 ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality tourmaline...crystals are opaque some gem-quality aquamarine and topaz crystals can weigh many kilograms. In geological |
|
Araçuaí, Minas Gerais, Brazil