 | | 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 |  | 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 (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 |  | | Journal (issue) | | Era, Minas Gerais, Brazil David Stanley Epstein NOTES AND NEW TECHNIQUES The Growth of Brazil-Twinned...Potential for Synthetic Amethyst Twinned on the Brazil Law John I. Koivula and Emmanuel Fritsch Thermal...LCCAdams, Orleans, MA; Luiz Angelo, Rio de Janeiro, Brazil; Trea Arendsen, Lansing, MI; Scott M. Azmus, Corvallis...Morris, Newark, CA; Francisco Muller Bastos, Minas Gerais, Brazil; Colleen Witthoeft Nayuki, Montreal, Que...pearls range from 13 Lo 19 mm and are set with old mine-cut diamonds. The piece sold at auction for $82 |  | | 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...rock from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | 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 (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 |  | | 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 | | 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...NATIONAL MUSEUM IN SOFIA 66 OTHER COLLECTIONS OF MINE IN BULGARIA 71 COLLECTIONS IN OTHER CITIES AROUND |  | | Journal (issue) | | 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...sapphirine (Column 2, mean of 3 spots analysed) and an apatite inclusion in the sapphirine (Column 3, mean of...total Fe is given as FeO. The low total for the apatite analysis may mean that OH or F is present; CI was...polished fragment of sapphirine was identified as apatite (Table 1, column 3), and it is possible that the |  | | 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) | | 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 |  | | 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...varieties are easy to differentiate by color. Apatite is significantly softer. Dioptase, tourmaline and |  | | 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 |  | | Journal (article/letter/editorial) | | DALSTRA† Rio Tinto Exploration Pty., Ltd., 37 Belmont Avenue, Belmont, Western Australia, Australia AND SERGIO...Doce, GAJAN, Mina de N4E, Serra dos Carajás, Pará, Brazil Abstract The genesis of banded iron formation...five continents (Fig. 1), the Carajás province in Brazil and the Hamersley province in Western Australia...orebodies in the Ukraine, the Quadrilátero Ferrífero in Brazil, and Thabazimbi in South Africa. Although not all...Carajás province The Carajás province in Central Brazil contains on the order of 18 Gt of high-grade (67% |  | | 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 |  | | Catalog/List | | MARCH/APRIL 2008 1) AGARDITE. Penberthy Crofts Mine, St Hilary, Cornwall. Ironstained quartz/gossan... £35. 2) APATITE and CASSITERITE. Golconda Mine, Governador Valadares, Minas Gerais, Brazil. A small...matrix with three intergrown light mauve hexagonal apatite xls to 10mm together with a few black cassiterite...(Collected June 1981). 50x15x30mm. £35. 5) BERYL. Brazil. A very nice pale sea green mainly transparent...£125. 7) CASSITERITE. Great Flat Lode, Dolcoath Mine, Cambome, Cornwall. Rich heavy chloritic veinstone |  | | 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 (article/letter/editorial) | | from commercial lithium sources such as the Foote mine at Kings Mountain, North Carolina; the giant crystal-bearing...pegmatites of the Black Hills, South Dakota; the Harding mine in Taos County, New Mexico; the enormous Bernic...Zimbabwe; and scattered mines in Madagascar and Brazil. Interestingly, most of these commercial occurrences...(both emerald and aquamarine), topaz, garnet, apatite, and gem tourmaline, in addition to muscovite,...what has been referred to as the A1 Aurtrey “Black” mine only a mile or so from Spruce Pine, apparently on |  | 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...composition from various localities (mainly from Brazil) have been studied using gated time-resolved luminescence...samples of beryl from several localities of Minas Gerais (MG), Brazil (5), from Hoggar, Algeria (1) and from...(RF) in Brazil, and Montana) and from beryl finds (Padre Paraiso and Lavra de Martinha in Brazil, Guerioun...2003). Six chrysoberyl samples from deposits in Minas Gerais State (Quilombo), in Goias State (Carnauba) | | | Catalog/List | | MARCH/APRIL 2008 1) AGARDITE. Penberthy Crofts Mine, St Hilary, Cornwall. Ironstained quartz/gossan...and CASSITERITE. Golconda Mine, Governador Valadares, Minas Gerais, Brazil. A small piece of white albite...matrix with three intergrown light mauve hexagonal apatite xls to 10mm together with a few black cassiterite...(Collected June 1981). 50x15x30mm. £35. 5) BERYL. Brazil. A very nice pale sea green mainly transparent...£125. 7) CASSITERITE. Great Flat Lode, Dolcoath Mine, Camborne, Cornwall. Rich heavy chloritic veinstone |  | | 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 |  | | 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... Associated minerals are molybdenite, quartz, apatite, schorl, alexandrite, pyrite, pyrrhotite, chalcopyrite...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; |  | | 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 |  | | Journal (article/letter/editorial) | | in tin-tungsten deposits (such as the Panasquiera mine) and is a constituent of granite, aplite, gneiss...muscovite with quartz, 6.8 cm wide, from the Santo Niño mine, Patagonia district, Santa Cruz County, Arizona...locality is the Palermo No. 1 mine, near North Groton, Grafton County. This mine is known for its cornucopia...a few. Also in Grafton County is the Keyes mica mine, near the town of Orange, the premier muscovite...Connecticut. Muscovite from the Tilly Foster iron mine, Brewster, Putnam County, New York, is associated |
|
