 | | Journal (issue) | | the International Gemmological Conference held in Brazil in September/October 1987, the author was given...figures on a first order prism face of a Brazilian aquamarine. Nomarski Differential Interference Contrast...patterns on a first order bypyramid of a Brazilian aquamarine Nomarski Differential Interference Contrast....solution cavities on the basal pinacoid of an aquamarine from Brazil. The c-axis is perpendicular to the image...natural namral and synthetic emeralds. distinct aquamarine component in addition to the © Copyright the |  | | 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) | | 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...assemblage 54 Gem News International Tucson 2012 • Aquamarine from Mozambique • Azurite in granitic rock from...from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from Mexico |  | | Journal (issue) | | 1917 the deep blue beryls from the Maxixe mine in Brazil have been a source of fascination both for those...quite different from the commoner blue beryl, aquamarine, in that their colour has a different source...testing of Maxixe beryl, golden beryl and green aquamarine K. Nassau, PhD, FGA(Hon) Lebanon, NJ 08833, USA...includes their identification and distinction from aquamarine by the anomalous dichroism, unusual absorption...than adequate to distinguish Maxixe beryl from aquamarine; both could also enable distinction between original |  | | Journal (issue) | | jadeite, (3) 7.81 ct violet jadeite, (4) 27.23 ct aquamarine, (5) 1.28 ct blue spinel, (6) 1.17 ct benitoite...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...typically report gem- Figure 3. Saturated-color aquamarine comes from relatively few deposits, and Africa...mining also continued at traditional sources in Brazil and Africa. Large quantities of Brazilian emeralds |  | | Journal (article/letter/editorial) | | emerald mines in Colombia are becoming depleted. Brazil currently accounts for approximately 10% of world...export values of emerald rough (Zwaan et al., 2005). Brazil currently accounts for approximately 10% of world...Mn2+ Fe2+ Na+ K+ Cs+ 28. Brazil (Gavrilenko and Pérez, 1999). 29. Brazil, Santa Terezinha (Gavrilenko...after Hammarstrom (1989). 5.4. Brazil Emeralds were first discovered in Brazil in 1912 at Brumado in Goias...Terezinha) (Giuliani et al., 1990). During the, 1980s, Brazil became a significant emerald producer and by the |  | | Journal (issue) | | Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction The...(besides emerald, others include amethyst, citrine, aquamarine, diamond, sodalite and ruby). Actually it is...been the most important emerald mining region in Brazil until the discovery of the Santa Terezinha occurrence...The emeralds of the Belmont Mine, Minas Gerais, Brazil. J. Gemm., 20(7/ 8), 446-56. Inda, H.A.V., Barbosa...Convênio CPM-CBPM. Sauer, D., 1982. Emeralds from Brazil. International Gemmological Symposium. Proc. 1982 |  | 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...emerald crystals was discovered in the Carnaíba mine, Brazil; the specimen weighed 341 kg with 1.7 million ct...Marshall; (e) emerald in plagioclase, Carnaíba, Brazil, longest crystal: 6 cm. Photograph: Gaston Giuliani...found on all five continents (Figure 2). Colombia, Brazil, Zambia, Russia, Zimbabwe, Madagascar, Pakistan |  | | Journal (issue) | | 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...including Brazil, Zambia and Canada. During his presentation, Sergio Martins from IBGM in Brazil stated...Some 85% of emerald sales occur in the USA, India, Brazil, Europe, Thailand, UAE, Colombia and China. One...formation and plate tectonics? In 2005, Colombia, Brazil, Zambia, Russia, Zimbabwe, Madagascar, Pakistan |  | | Book | | Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Reprinted from: Minerals 2019, 9, 233, doi:10.3390/min9040233...Province (BPP) from Rio Grande do Norte in Northeast Brazil. The Boqueirao granitic pegmatite is classified...important sources (i.e., Afghanistan (Panjsher Valley), Brazil (Itabira), Colombia (Coscuez), Ethiopia (Shakisso)...Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil. Minerals 2019, 9, 233. [CrossRef] Huong, L.T.-T...Granitic Pegmatite, Parelhas, Rio Grande do Norte, Brazil Sabina Strmić Palinkaš 1, *, Ladislav Palinkaš |
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