 | 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~ |  | 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...gemquality 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...Opening a Tsavorite Mine T anzaniteOne Limited is working towards opening a tsavorite mine not far from its...Tanzania, about 20 kilometers from its tanzanite mine. The project has a total indicated resource of 1 |  | 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) | | 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...ct. Insufu rough emerald extracted from the Kagem mine in 2015. Lastly, on the 2th of October, the remarkable...(“the lion elephant”) was extracted from the same mine [3]. Other giant crystals have been discovered in...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million |  | | Journal (issue) | | rather, is nephrite, a massive compact variety of actinolite, an amphibole. And even though nephrite is an...setting Gem sapphirine is being recovered from a mine about Sapphirine is derived and obtained from rocks...Sri Lanka the gem sapphirine comes from a carats. mine located near the 9th milepost along the Abstract...Preto, Minas Gerais, Brazil **University of Mainz, West Germany ***CPRM, Salvador, Bahia, Brazil 1. Introduction...occurrences in Brazil. Fig. 1. Ceara Cearâ CE-ll Tami CE-llTauâ Minas Gerais Minas MG-l MG-1 Mina Belmont (Itabira) |  | 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&;...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...ASIA OCEANIA AFRICA EUROPE AMERICA Country Mine locality Type of deposit Sample 18 O/16O (& |  | | Report (issue) | | and trapiche emerald Rupert Hochleitner Brazil: Minas Gerais, Bahia, Ceara, Goias and Tocantins . . ...Asia: Pakistan, Afghanistan and India .......6 0 Old Mine Emeralds . . . . . . . . . . . . . . . . . . . ...Maharajahs and Maharanis held large emeralds (see "Old Mine Emeralds" page 62). The Color of Islam Emerald...quality. It was the gift of Emperor Dom Pedro I of Brazil to the 6 th Duke of Devon- shire. Also housed...some of the most productive emerald localities in Brazil, for example, more than 77 percent of the emerald |  | | Catalog/List | | with micro Sphalerite on 2x2 matrix Lers Malines Mine, Gard, France £20 4. BENTORITE a very rare, Cr containing...crystals, possible Dickite micros too. Panteg-y-Gaseg Mine, Amlwch Anglesey, Wales £18 I 0. PENNANTITE small...matrix. Plates are about I to 1.5 mm size (Benallt Mine,Lleyn, Wales) £30 11. BOURNONITE good blocky grey...crystals,. all over 2.5 x2.5 inch surface Likasi Mine, Katanga Congo £25 14. SIDERITE rich red-brown...overall size small 2x3 inches Brumado, Bahia , Brazil £60 • 16. BERYLLONITE good translucent to transparent |  | | Catalog/List | | 5 cm across. £25 Tonca de Onca Mine, Virgem de Lapa Minas Gerais Brazil This is the end member of the...with some pink Hureaulite 7x7 mmCigana Mine, Galileia Minas Gerais £36 4 BRUCITE clear silvery cleavages...matrix, not a visually attractive piece ! Ollinghouse Mine, washoe County Nevada U.S.A £50 . 6 STELLERITE...inch £20 Ilimaussaq Greenland Sapucai Mine, Galileia Minas Gerais about 8.5mm Seinajoki Laani Finland...by RT) Probably merclll'ian tennantite. Gortdrum Mine Tipperary Ireland £8 13 . 14 TSUMEBITE green coating |  | | Journal (issue) | | Decade of Change A New Era for the Historic Coscuez Mine Esmeraldas Santa Rosa: Our Wealth is Green Rediscovery...Gemological Description of Ethiopian Emeralds Belmont Emeralds – Uncompromisingly Green Overview of Brazil’s...More Exquisite Emeralds Magnificent Old Mine Emeralds 143 Mine Visit A Visit to Colombia’s “Green” Emerald...Origins and Appellation President Clement Sabbagh, Brazil Vice Presidents Damien Cody, Australia Nirmal Kumar...Kumar Bardiya, India Treasurer Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla |  | | Journal (issue) | | Centre, Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction...been the most important emerald mining region in Brazil until the discovery of the Santa Terezinha occurrence...investigations carried out on request of the Secretaria das Minas e Energia, performed by the Companhia Baiana de...emeralds of different j Brazilian occurrences. * 1: Itabira/MG; Hänni, Schwarz and Fischer (1987) * 2: Taua/CE;...(Figure 14), goethite, beryl (emerald), tremolite/ actinolite (Figure 15), apatite (Figure 16), quartz (Figure |  | | 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...aquamarine, like the material from Coronel Murta (Brazil) and Tongafeno (Malagasy Republic). As we have...beryl originally found at the Maxixe mine in Minas Gerais, Brazil, is colored by a similar but different...ALEXANDRITE FROM T H E PEGMATITE DISTRICTS OF MINAS GERAIS, BRAZIL By Keith Proctor This fourth article in |  | | Journal (issue) | | mineral collector—Part 3: Treasure-hunting in Minas Gerais since 2000. . . . . . . . . . . ....the Morro da Mina manganese mine, Conselheiro Lafaiete, Minas Gerais, Brazil. Probably the world’s finest...2008 issue for his article on the Mockingbird gold mine). Like the rest of us on the staff, he will be striving...minerals on DVD wilensky Mimetite, Pingtouling mine, Liannan Co., Guangdong, China. Wilensky Fine Minerals...Mineral Collector—Part 3: Treasure-Hunting in Minas Gerais Since 2000 Guido Steger Nestroystrasse 15 2700 |  | | Book | | On a spectacular find of crocoite in the Adelaide mine, Dundas, Tasmania (by A. H. Chapman) 3:111-113 ADOLFSSON...AJO Famous mineral localities: the New Cornelia mine, Ajo, Arizona (by W. J. Thomas & R. B. Gibbs) 14:283-298...ALLEN, GEORGE B. --and W. Hunt: The Tonopah-Belmont mine, Maricopa County, Arizona 19:139-144 ALLGOOD...Allgood, C. Williams: Ramsdellite from the Mistake mine [Arizona] 14:333-335 ALLGOOD, ROBERT W. -with G...the Mistake mine [Arizona] 14:333-335 ALMA Famous mineral localities: the Home Sweet Home mine, [near Alma |  | | Journal (issue) | | Jewelry The Capao Topaz Deposit, Ouro Preto, Minas Gerais, Brazil Harry Winston: A Story Told in Diamonds...Gem-Bearing Pegmatites' A Review Gem Pegmatites of Minas Gerais, Brazil: Exploration, Occurrence, and Aquamarine...Orthoamphibole S p r i n g 1985 Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Aracuai Districts...Occurrence and Gemological Properties of Wessels Mine Sugilite Three Notable Fancy-Color Diamonds: Purplish...Flux-Grown Synthetic Emeralds Gem Pegmatites of Minas Gerais. Brazil: The Tourmalines of the Governador Valadares |  | | Journal (issue) | | iridescence observed in “rainbow” hematite from Minas Gerais, Brazil. 40 DNA Techniques Applied to the Identification...iridescence in metamorphic “rainbow” hematite from Brazil. The authors use electron microscopy, atomic force...colored by GR1 defects have been alluvial deposits in Brazil, Guyana, Venezuela, Zimbabwe, the Central African...never graded by GIA), and the 5.03 ct Aurora Green (Brazil), which sold at auction in 2016 for more than US...America has yielded a number of green diamonds from Brazil and Guyana (figure 7). Most show extensive surficial |  | | Journal (issue) | | 1987 Gemstone Durability: Design to Display Wessels Mine Sugitite Three Notable Fancy-Color Diamonds The...Southern Africa Sunstone Labradorite from the Ponderosa Mine, Oregon Nontraditional Gemstone Cutting Nontransparent...Gemstone Irradiation and Radioactivity Amethyst from Brazil Opal from Opal Butte, Oregon Kyocera's Synthetic...Emerald Deposit Beryl Gem Nodules from the Bananal Mine "Opalite:" Plastic Imitation Opal Spring 1993 Queensland...Polynesian Black Pearls The Capoeirana Emerald Deposit Brazil-Twinned Synthetic Quartz Thermal Alteration of |  | | Journal (issue) | | page: Rough emeralds mined by Gemfields at the Kagem mine in Zambia. (Photo courtesy of Gemfields) CONTENTS...Gemfields Provides Insights Into Emerald Operations Belmont Head Describes Firm›s Brazilian Mining Business...The New Dynamics of the Colombian Emerald Sector Mine Tour 44 22 32 In Search of Colombia’s Green Dreams...Emerald Mines Education 44 50 Education and the Mine-to-Market Story Beautifying Emeralds - The Perennial...Russia: The Geology and Gemology of the Malyshev Mine Emerald Origins 88 98 106 78 4 InColor ׀Special |  | | Journal (issue) | | SIX APRIL 1993 Cover Picture The Hematita mine in Minas Gérais in 1987 - probably the richest alexandrite...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...to be able to deterAlthough it is very important mine if if a gem is natural or synthetic, and treated...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice...Fundiio, Fundão, 21,910, Rio de Janeiro, Janeiro, Brazil *Institute of Geosciences UFRJ-CNPq, Cidade Universitaria |  | | 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 |  | | Report (volume) | | Pernambuco, Recife, Brazil J. S. BETTENCOURT Universidade de Sao Paulo, Brazil C. P. DE CAMPOS Lud...FERREIRA Federal University of Pernambuco, Recife, Brazil 2011 Published by The Geological Society London...(Iran), Asia (Japan and China) and South America (Brazil and Argentina) and spanning rocks from Palaeoproterozoic...–Cambrian granitic magmatism in the Araçuaı́ orogen (Brazil), the Eastern Brazilian Pegmatite Province and...7852, Cidade Universitaria, 50670-000 Recife, PE, Brazil 2 Institute of Geosciences, University of São |  | | Journal (article/letter/editorial) | | thick, bodies confined in biotite gneiss. Talc and actinolite are the main minerals in the ultrabasic rocks...Cheilletz et al., 1994; Ottaway et al., 1994); Brazil Carnaı́ba and Socotó, Capoeirana, Porangatu, Santa...Santa Terezinha (Giuliani et al., 1997) and Itabira (Hänni et al., 1987); Spain Franqueira (Fuertes-Fuente...Fischer, M. (1987) The emeralds of the Belmont Mine, Minas Gerais, Brazil. Journal of Gemmology, 20, 446 456 |  | | Report (issue) | | crystal weighed 455 kilograms. 2m: The Queen Anne mine in Zimbabwe has produced crystals up to 2 meters...from some pegmatites. This specimen, from Minas Gerais, Brazil, is housed in the Deutsches Edelstein Museum...crystals are found in soils and stream gravels in Brazil. On the other hand, at high temperatures and pressures...surprise. In 1997, Gary and Mary Freeman began to mine the Orchard pit, a then insignificant pegmatite...(Laurs et al. 2003). A second location in the Deva mine, Paroon Valley, Kunar, Nuristan, Afghanistan has |  | | 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,...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded...emerged from another Peruvian deposit: the Quiruvilca mine in northern Peru. The as-mined specimens typically |  | | Book | | cm Page 251: Calcite, Irai, Rio Grande do Sul, Brazil * 12.5 x 10 x 10.5 em Page 252: Gypsum rosette...environment. solidified. In some basalts of India and Brazil, these cavities are large enough for a person...before it ABOVE: Imperial topaz, Ouro Preto, Minas Gerais, Brazil ° 3.3 x 2.7 x 1.8 om, 159.10 ct RIGHT: Round...mineral pigments. LEFT: Malachite, Bwana M’Kubwa Mine, Ndola, Copperbelt, Zambia * 22 x 26 x 16 cm 22...Namibia * 20 x 18 x 14 cm Bladed stibnite, Ichinokawa Mine, Saijo, Shikoku, Japan * 10 x 1 x 1 om Acicular |
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