 | de Souza, J. L., Mendes, J. C., da Silveira Bello, R. M., Svisero, D. P., Valarelli, J. V. (1992) Petrographic and microthermometrical studies of emeralds in the ‘Garimpo’ of Capoeirana, Nova Era, Minas Gerais State, Brazil. Mineralium Deposita, 27 (2) 161-168 doi:10.1007/bf00197103 | Journal (article/letter/editorial) | | the 'Garimpo' of Capoeirana, Nova Era, Minas Gerais State, Brazil J.L. de Sonza ~, J. C. Mendes 1, S...Preto, Ouro Preto, Minas Gerais, Brazil 2 IG, Universidade de S~o Paulo, S~o Paulo, Brazil Received: November...the area of the Capoeirana emerald deposit, Minas Gerais State, revealed two main lithostructural units...the extent of a emeraldiferrous province in Minas Gerais State, which begins at northern Rio Casca and...terms - are represented by the mineral deposit of Itabira, discovered in 1978 S _ . . ~.~C/L~ -~4~ I~ |  | | Journal (article/letter/editorial) | | ©Springer-Verlag 1990 Origin of emerald deposits of Brazil G. Giuliani 1. 2 , L. J. H. D. Silva 3 and P. Couto...Couto 4 1 2 3 4 ORSTOM, Universidade de Brasilia, Brazil c.R.P.G., 15 Rue N.D. des Pauvres, BP 20, 54501...Metais Ltda, Bahia, Brazil Secretaria das Minas e Energia, C.P.R.M./SGM, Bahia, Brazil Abstract. Precambrian...Precambrian emerald deposits of Brazil are found in a typical geologic setting with Archean basement and supracrustal... Gemstone deposits are of great importance in Brazil. Agate, amethyst, tourmaline, and topaz represent |  | Gomes, Sylvio D., Berger, Sarah, Figueiredo e Silva, Rosaline C., Hagemann, Steffen G., Rosière, Carlos A., Banks, David A., Lobato, Lydia M., Hensler, Ana-Sophie (2018) Oxide chemistry and fluid inclusion constraints on the formation of itabirite-hosted iron ore deposits at the eastern border of the southern Espinhaço Range, Brazil. Ore Geology Reviews, 95. 821-848 doi:10.1016/j.oregeorev.2018.03.025 | Journal (article/letter/editorial) | | eastern border of the Southern Espinhaço Range, Brazil Sylvio D. Gomes, Sarah Berger, Rosaline C. Figueiredo...eastern border of the Southern Espinhaço Range, Brazil, Ore Geology Reviews (2018), doi: https://doi.org/10...eastern border of the Southern Espinhaço Range, Brazil Sylvio D. Gomesa,*, Sarah Bergerb, Rosaline C...a Carlos, 6627, Pampulha, Belo Horizonte, MG, Brazil b University of Western Australia, Centre for...southern (Almeida, 1977; Almeida et al., 2000) in Minas Gerais state (Fig. 1). The geology of QF is composed |  | da Costa, Geraldo Magela, de Oliveira Polli, Gabriel, Kahwage, Márcio A., de Grave, Eddy, Sabioni, Antônio Claret Soares, Mendes, Júlio Cesar (2006) The effect of thermal treatment on the 57Fe Mössbauer spectrum of beryl. Physics and Chemistry of Minerals, 33 (3) 161-166 doi:10.1007/s00269-006-0064-3 | Journal (article/letter/editorial) | | thermal treatment on the 57Fe Mössbauer spectrum of beryl Received: 16 April 2005 / Accepted: 12 January...Mössbauer spectra (MS) of blue, green and yellow beryl (ideally Be3Al2Si6O18) containing approximately...significant changes in the MS, but the green and yellow beryl acquire a blue colour. All these results are interpreted...the available crystallographic sites. Keywords Beryl Æ Thermal treatment Æ Mössbauer spectroscopy G...Universitário- Morro do Cruzeiro, 35400, Ouro Preto, MG, Brazil E-mail: magela@iceb.ufop.br Tel.: +55-31-35591708 |  | Lynch, E. P., Costanzo, A., Feely, M., Blamey, N. J. F., Pironon, J., Lavin, P. (2014) The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and gemmological perspectives. Mineralogical Magazine, 78 (7) 1571-1587 doi:10.1180/minmag.2014.078.7.04 | Journal (article/letter/editorial) | | pp. 1571–1587 The Piteiras emerald mine, Minas Gerais, Brazil: fluid-inclusion and gemmological perspectives...faceted emeralds from the Piteiras Mine, Minas Gerais, Brazil. These data complement those of Rondeau... schist-hosted emeralds. K EY WORDS : Emerald, Brazil, gemmology, fluid inclusions, microthermometry,...~10 20% of world emerald production, which ranks Brazil second after Colombia (Schwarz and Giuliani, 2002;...emeralds in Brazil was made in 1912 in Goiás (Just, 1926). In 1920, the first discovery in Minas Gerais was made |  | | Journal (issue) | | Pearl Testing 36 Emeralds from South America – Brazil and Colombia 48 Clinohumite – The Mountain Fire...rise of new economies such as China, India, and Brazil. The challenges have been numerous as these new...every ICA member, I would like to thank the IBGM in Brazil along with every company, individual, and government... G E M O LO G Y Emeralds from South America – Brazil and Colombia By Dr. Dietmar Schwarz, research manager...gemology, Federal University of Ouro Preto, Minas Gerais (UFOP); and Dr. Leo Klemm, analyst, Gübelin |  | | Book | | 1982 Jules Roger Sauer ” Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...Century. The book is a showcase ofthe best from Brazil and it makes a handsome evocation of what is 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) | | Alexandrite from the Pegmatite Districts of Minas Gerais, Brazil Keith Proctor 33 Faceting Large Gemstones...alexandrites near the town of Hematita in Minas Gerais, Brazil; in less than three months in 1987, more... , l beryl (seefigure 2),is colored by Fe3+ as it interacts with other atoms in the beryl structure...Gems, Inc. Photo 0 Tino Hammid. a-, - - in the beryl structure. The color results from light absorbed...induced artificially by the irradiation of blue beryl (see Fritsch and Rossman, 1987). Usually oxygen |  | | 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...(Imataca Complex), and others from Brazil (Quadrilátero Ferrífero, Itabira, and Guanhães) were part of the...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 (article/letter/editorial) | | Palladium arsenide-antimonides from ltabira. Minas Gerais, Brazil. Mineral. Mag. 39, S2B-543. Electron microprobe...residual concentrates from gold washings at ltabira, Brazil. Intergrowths with arsenopalladinite occur, and...Palladium arsenide-antimonides from Itabira. Minas Gerais, Brazil. Mineral. Mag. 39, 528-543. Electron...size in concentrates from gold washings at Itabira, Brazil. In one grain it was intergrown with arsenopalladinite...group from the Borborema region, north-eastern Brazil. Mineral. Maq.39,571-576. Analysis by electron |  | Qiao, Xin, Zhou, Zhengyu, Schwarz, Dietmar Theodor, Qi, Lijian, Gao, Jiaxin, Nong, Peizhen, Lai, Meng, Guo, Kaipeng, Li, Yingbo (2019) Study of the Differences in Infrared Spectra of Emerald from Different Mining Areas and the Controlling Factors. The Canadian Mineralogist, 57 (1) 65-79 doi:10.3749/canmin.1800042 | Journal (article/letter/editorial) | | there have already been many studies of emerald or beryl using infrared (IR) spectra (Wood & Nassau 1967...optical absorption spectra of synthetic hydrothermal beryl is another area of recent study (Taran et al. 2017...bands of D2O and HDO molecules in the c-channels of beryl using FTIR spectroscopy. Besides emerald, there... Adamo et al. 2008) on the band assignments of beryl family minerals and other ring-silicate minerals...discriminate natural from synthetic/treated emerald/ beryl. There is a greater opportunity for research, based |  | | Book | | MINES AND MINERALS IN BRAZIL --= ··--· ··- ·-·=- MINES AND MINERALS IN BRAZIL J OSIAS LEAO (ECONOMIC...regarding water power and industry of electr·icity in Brazil were specially prepared at the Division of Waters........ 189 SUMMARY OF THE MINERAL RESERVES OF BRAZIL..... . ... ....... . .. 199 STATISTICAL TABLES...practically untouched, the mineral reserves of Brazil have already been a source of wealth to many and...without the discovery of the precious metals in Brazil the existence of the modern economic man would |  | | Journal (article/letter/editorial) | | most glamorous of the beryllium minerals after beryl and chrysoberyl. Exceptional euclase specimens appeared...from Brazil in 1785. Dana (1892) gives the locality as the mining district of Villa Rica in Minas Gerais...gold”), Figure 2. Euclase, 2.4 cm tall, Ouro Preto, Brazil. Luiz Menezes specimen, Jeff Scovil photo. 544 ...Jeff Scovil photo. which was the capital of Minas Gerais from 1720 to 1897. Today, Ouro Preto is a city...single crystals. Granitic pegmatite localities in Minas Gerais mentioned by Cornejo and Bartorelli (2010) and |  | Scholz, R., Chukanov, N. V., Filho, L. A. D. M., Atencio, D., Lagoeiro, L., Belotti, F. M., Chaves, M. L. S. C., Romano, A. W., Brandão, P. R., Belakovskiy, D. I., Pekov, I. (2014) Césarferreiraite, Fe2+Fe3+2(AsO4)2(OH)2·8H2O, from Eduardo mine, Conselheiro Pena, Minas Gerais, Brazil: Second arsenate in the laueite mineral group. American Mineralogist, 99 (4) 607-611 doi:10.2138/am.2014.4695 | Journal (article/letter/editorial) | | (AsO4)2(OH)2⋅8H2O, from Eduardo mine, Conselheiro Pena, Minas Gerais, Brazil: Second arsenate in the laueite mineral...Dmitriy I. Belakovskiy7 and Igor Pekov8 Escola de Minas, Departamento de Geologia, Universidade Federal...Morro do Cruzeiro, 35400-000, Ouro Preto, Minas Gerais, Brazil 2 Institute of Problems of Chemical Physics...Federal de Minas Gerais, Av. Antônio Carlos, 6627, 31270-901, Belo Horizonte, Minas Gerais, Brazil 4 Instituto...Paulo, SP, Brazil 5 Universidade Federal de Itajubá (UNIFEI), Campus Itabira, Itabira, Minas Gerais, Brazil |  | Giuliani, G., France-Lanord, C., Coget, P., Schwarz, D., Cheilletz, A., Branquet, Y., Giard, D., Martin-Izard, A., Alexandrov, P., Piat, D. H. (1998) Oxygen isotope systematics of emerald: relevance for its origin and geological significance. Mineralium Deposita, 33 (5) 513-519 doi:10.1007/s001260050166 | Journal (article/letter/editorial) | | (Swat-Mingora districts, d18O +15.7 0.1&), Brazil (Santa Terezinha de GoiaÂs, d18O +12.2 0.1&;...Emerald, the chromium-vanadium-rich variety of beryl, ideally Be3Al2Si6O18, is much rarer than diamond...Mineralco 1996) followed respectively, by Zambia (15%), Brazil (10%), Russia (5%), Madagascar (3%), Zimbabwe (2%)...from the western zone (mean +21.2 0.5&). In Brazil, emeralds related to peg- Fig. 1 Location of the...eastern emerald zone (EEZ ) : Chivor, GachalaÂ; Brazil ± Carnaõ ba (CA), Socoto (SO), Santa Terezinha |  | | Journal (article/letter/editorial) | | The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Universidade Federal de Minas Gerais, Av. AntoÃnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...Province (EBPP) is situated mainly in the State of Minas Gerais but also encompasses the southern part of the |  | Giuliani, Gaston, Groat, Lee A., Marshall, Dan, Fallick, Anthony E., Branquet, Yannick (2019) Emerald Deposits: A Review and Enhanced Classification. Minerals, 9 (2) 105 doi:10.3390/min9020105 | Journal (article/letter/editorial) | | emerald deposits. Generally speaking, emerald is beryl with sufficient concentrations of the chromophores...sub-types hosted in: (IA) Mafic-ultramafic rocks (Brazil, Zambia, Russia, and others); (IB) Sedimentary...sub-types hosted in: (IIA) Mafic-ultramafic rocks (Brazil, Austria); (IIB) Sedimentary rocks-black shale...Emerald is the green gem variety of the mineral beryl, which has the ideal formula of Be3 Al2 SiO18 ....emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million ct |  | | Report (issue) | | Beryl Be3 Al2 Si6 O18 c 2001 ° Mineral Data Publishing, version 1.2 Crystal Data: Hexagonal. Point...districts, Boyac¶a Province, Colombia. In Brazil, from Minas Gerais, in large districts around Te¶o¯lo Otoni...Otoni, Governador Valadares, Conselheiro Pena, and Itabira. Around Mingora, Swat district; from Dassu and...(1988) Reappraisal of the crystal chemistry of beryl. Amer. Mineral., 73, 826{837. All rights reserved |  | | Journal (issue) | | INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia Precision Measurement...the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E. Jacob, Tobias Häger...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically display a saturated...from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from Mexico...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | | Report (issue) | | Monlevade and Rio Piracicaba Quadrangles, Minas Gerais Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-E...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Quadrangles, Minas Gerais Brazil By ROBERT G. REEVES GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...____________ Itabirite. - _______________________ Minas Series_-_--_____--_______--___-__-_ Caraga Grou |  | Ribeiro-Althoff, A. M., Cheilletz, A., Giuliani, G., Féraud, G., Camacho, G. Barbosa, Zimmermann, J. L. (1997) 40Ar/39Ar and K-Ar Geochronological Evidence for Two Periods (∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil. International Geology Review, 39 (10) 924-937 doi:10.1080/00206819709465310 | Journal (article/letter/editorial) | | (∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil a a a b A. M. Ribeiro-Althoff , A. Cheilletz...(∼2 Ga and 650 to 500 Ma) of Emerald Formation in Brazil, International Geology Review, 39:10, 924-937 To...ages have been obtained on the emerald deposits of Brazil. These include: Socotó (2104 ± 41 Ma), Carnaíba...consistent with two periods of emerald formation in Brazil—~2 Ga and between 650 and 500 Ma. The age of the...within the channels of the ring struc ture of beryl (Damon and Kulp, 1958; Leutwein and Kaplan, 1963; |  | Ollier, Nadège, Fuchs, Yves, Cavani, Olivier, Horn, Adolf Heinrich, Rossano, Stéphanie (2015) Influence of impurities on Cr3+ luminescence properties in Brazilian emerald and alexandrite. European Journal of Mineralogy, 27 (6) 783-792 doi:10.1127/ejm/2015/0027-2484 | Journal (article/letter/editorial) | | Costa, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil ct ed pr Abstract: Emerald...and alexandrite, the chromiferous varieties of beryl, Be3Al2[Si6O18], and chrysoberyl, BeAl2O4, respectively...technological interest. The Cr3þ properties in natural beryl and chrysoberyl samples have been studied by mainly...studied the structural relaxation occurring in beryl by introduction of chromium in the structure. Whereas...samples of beryl and chrysoberyl of diverse composition from various localities (mainly from Brazil) have |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais. Collection of Alvaro Lucio. Photograph taken...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite |  | Karampelas, Stefanos, Al-Shaybani, Bader, Mohamed, Fatima, Sangsawong, Supharart, Al-Alawi, Abeer (2019) Emeralds from the Most Important Occurrences: Chemical and Spectroscopic Data. Minerals, 9 (9) 561 doi:10.3390/min9090561 | Journal (article/letter/editorial) | | emeralds from the most important sources (Afghanistan, Brazil, Colombia, Ethiopia, Madagascar, Russia, Zambia...Zimbabwe). It revealed that emeralds from Afghanistan, Brazil, Colombia and Madagascar have a relatively lower...cm−1 band (with some samples from Afghanistan, Brazil and Russia presenting equal relative intensities)...bluish-green to green to yellowish-green variety of beryl (with an ideal formula of Be3 Al2 SiO18 ) coloured...colour, but to a lesser extent); beryl coloured solely by iron is green beryl (and not emerald) [1]. Transparent |
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Itabira, Minas Gerais, Brazil