 | | 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 |  | | 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) | | muscovite crystals, to 3 cm, on albite, Galileia, Brazil. T Taxonomy of the Mica Group The mica minerals...about 3 cm; Riacho Genipapo, near Aracuaí, Minas Gerais, Brazil. All photos by the author of specimens in...forming a 10-cm rosette, Jose Pinto mine, Minas Gerais, Brazil. Table 3. Interlayer-deficient micas. Dioctahedral...quartz at Riacho Genipapo, near Aracuaí, Minas Gerais, Brazil (Cassedanne and Cassedanne 1981). A spectacular...lavender crystals are found at Aracuaí, Minas Gerais, Brazil. Distinctive spherical and stalactitic masses |  | | 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) | | Emerald Business in Colombia Focus on Brazil 36 30 Booming Brazil – A Rising Star in the Jewelry Industry...Gemstones 52 Interesting New Gemological Finds in Brazil Mining 62 Andesine in Tibet – A Second Field...Oliveira (2005) describes cases in Campos Verdes, Brazil where inexpensive projects have resulted in concrete...Mining and Local Development: Three Case Studies in Brazil, 31pp. • Sarassin, B., 2006. The mining industry...Summer/Winter 2010 29 FOCUS ON BR A ZIL Booming Brazil – A Rising Star in the Jewelry Industry and the |  | | Journal (issue) | | and a 3.20 ct Paraíba tourmaline trillion from Brazil. The rings and loose stones are courtesy of Omi...California (Fisher, 2011) in the U.S. as well as Brazil (Proctor, 1985a,b; Koivula and Kammerling, 1989)...(BO3)3 **S1–3 S1– Dravite Fluor-dravite Schorl Fluor-schorl Tsilaisite Fluor-tsilaisite Chromium-dravite...R1+ R4+6O18 (BO3)3 S1–3 S2– Oxy-dravite Oxy-schorl Povondraite Bosiite Chromo-alumino-povondraite...unknown geographic origin b BD -S1 Black oxy-schorl in granitic rock; Czech Republic BD-S2 Dark bluish |  | | Journal (issue) | | SPRING 2006 PAGES 1–94 “Paraíba” Tourmaline from Brazil, Nigeria, and Mozambique Lead Glass–Filled Rubies... “Paraíba”-type Copper-bearing Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting...Myanmar • Gem-quality massive pink muscovite from Brazil • Pyrope-spessartine from Tanzania • Transparent...copper-bearing “electric” blue elbaite from Paraíba State, Brazil, has been one of the most sought-after gem varieties...Cu-bearing elbaites have been found elsewhere in Brazil, as well as in Nigeria and Mozambique. The lead |  | | Journal (issue) | | Trace-element Composition of Paraíba-type Tourmaline from Brazil, Mozambique and Nigeria By Martin Okrusch, Andreas...cushion and ~5 ct stone in ring) and from Paraíba, Brazil (3.5 mm gems in bracelet and 4.02 ct oval). Courtesy...dealer Leonardo Silva Souto (Gems in Gems, Teófilo Otoni, Brazil) had approximately 50 cabochons weighing...as the spectra of tantalite-(Mn) from north-east Brazil, which contained supplementary bands at 621, 547...the Borborema pegmatite province, northeastern Brazil: Conditions of formation and melt and fluid-inclusion |  | | Journal (issue) | | liddicoatite from other world localities (i.e., Brazil, Canada, “Congo,” Czech Republic, Mozambique, Nigeria...Koivula and Kammerling [1990]), reportedly from Minas Gerais, TABLE 1. Properties of liddicoatite-elbaite...dDunn et al. (1977) GEMS & GEMOLOGY SPRING 2002 Brazil; one polished slice from Vietnam; one polished...various colors have been seen in tourmaline from Brazil, Mozambique, and elsewhere, although these crystals...but found in some tourmalines from Madagascar, Brazil, and Namibia) is the “aggregate type” zoning described |  | | Journal (issue) | | 2004 Tucson report • Yellow cat’s-eye beryl from Brazil • Update on demantoid and cat’s-eye demantoid from...J. Dunn and W. Wight, “Green gem herderite from Brazil,” Journal of Gemmology, Vol. 15, No. 1, 1976, pp...the Gemological Center in Belo Horizonte, Minas Gerais, Brazil. Given the rarity of this material, these...45 × 22.56 × 13.52 mm), reportedly from Minas Gerais, Brazil, is one of six large herderites examined...hydroxyl-herderite in Brazil are the Virgem da Lapa and Golconda mines in Minas Gerais (P. J. Dunn et al |  | | Journal (issue) | | Paraiba Tourmaline Revisited Paraiba Tourmaline from Brazil – The Neon-Blue Burn Mozambique Paraiba Tourmaline...& Jewelry Industry President Clement Sabbagh, Brazil Vice Presidents Damien Cody, Australia Nirmal Kumar...Kumar Bardiya, India Treasurer Marcelo Ribeiro, Brazil Secretaries Bruce Bridges, USA Santpal Sinchawla...common gem tourmaline, liddicoatite, dravite and schorl. At the end of the 1980s, unusual vivid blue and...tourmalines from the Paraíba State in northeastern Brazil generated major interest in the gem trade due to |  | | Journal (issue) | | by Leon Agee. The patterned colors are caused by Brazil-law twinning, while light reflecting from rutile...Luciana Barbosa, Gemological Center, Belo Horizonte, Brazil; Edward Boehm, Joeb Enterprises, Solana Beach,...the East Coast lab. Reported to be from a mine in Brazil, it was submitted for identification of its transparent...known to originate from the Brazilian state of Minas Gerais. The same client also submitted a transparent...numerous twophase (fluid and gas) inclusions. Although Brazil is a known source of apatite, references in the |  | | Journal (issue) | | em-quality aquamarine has been produced mainly from Brazil and Africa (Bank et al. 2001; Webster, 2002), as...an alkali-poor beryl from Serra Branca (Goias, Brazil): Spectroscopic characterization. American Mineralogist...(aquamarine variety) from pegmatites of Minas Gerais, Brazil. Physics and Chemistry of Minerals, Vol... Figure 2. This semitransparent morganite from Brazil weighs an impressive ~22.4 kg, and was part of...courtesy of BC Gemas do Brasil, Governador Valadares, Brazil. Figure 3. These bright blue stones (1.45–2.45 |  | | Journal (issue) | | mine, Bolivia • Andradite from China • Barite from Brazil • Gem hanksite • Lepidolite beads • “Soufflé” freshwater...freshwater cultured pearls • “Churrasco quartz” from Brazil • Cat’s-eye rhodonite • Large H-rich diamond •...Online: Spring 2006 “Paraíba”-type Tourmaline from Brazil, Nigeria, and Mozambique: Chemical Fingerprinting...Iron Colorants in Gem Tourmalines Andalusite from Brazil Peridot from Sardinia, Italy Fall 2007 The Transformation...Tourmalines from New Deposits in Paraíba State, Brazil Type Ia Diamond with Green-Yellow Color Due to |  | | Book (edition) | | m (26 ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality tourmaline...acid members of the volcanic province in southern Brazil and Uruguay, and the fire opals occurring in small...amethyst from volcanic rocks in Rio Grande do Sul, Brazil. The amethyst crystals are more strongly coloured...Alluvial sands containing diamonds near Sopa, Minas Gerais, Brazil The above discussion has concentrated on...worldwide but some of the most important are in Brazil, where the gem-quality deposits are associated |  | | Journal (issue) | | Northwest Territories, Canada; Salininha in Bahia, Brazil; Ma- 108 EMERALDS FROM BYRUD, NORWAY lipo in...distinctive: Emeralds from other deposits (Salininha, Brazil, and Lened, Canada) also can show high V/Cr ratios...Brésil et de Colombie [Origin of emerald deposits in Brazil and Colombia]. Thèse d’Habilitation, Institut National...Brésil: genèse et typologie [Emerald deposits in Brazil: genesis and typology]. Chronique Recherche Minière...Piteiras, Minas Gerais, nouvelle source d’émeraude de belle qualité au Brésil [The Piteiras mine, Minas Gerais |  | | Journal (issue) | | Laghman, Afghanistan • Emeralds from Piteiras, Brazil • Educational iolite • “Hte Long Sein” jadeite...sampling at the new Piteiras emerald deposit in Minas Gerais, Brazil. Courtesy of Seahawk Minerals Ltd.; photo...saturation. First production of emeralds from Piteiras, Brazil. Representatives from Seahawk Minerals Ltd. showed...(figure 6) from the new Piteiras property in Minas Gerais. Piteiras is situated between the Belmont mine...typically produce aquamarine, brownish topaz, and schorl, although some deposits also have green and bicolored |  | | Book | | original: Norte-Americano: “GEOLOGY AND PHYSICAL OF BRAZIL” GEOGRAPHY Esta tradução & propriedade literarta...Provincia do Espírito Santo . ME =»Provincia de Minas Gerais cecesesmereo IV — Ilhas é Resifes do Cocal dos...Santa Catasina o Rio Grande do Sul . XVIII — As minas de ouro do Brasil XIX— Resumo da geologia do Draril...principais rios, percorrendo os distritos de Mucurf c Minas No- 6 Cuartes Freverick HarTr vas; estudo dos...publicação da obra “Geology and Physical Geography of Brazil”, pasa satisfazer ao pedido de Louis Agassiz para |  | | Journal (issue) | | rhodochrosite, 2.59 ct Paraíba tourmaline from Brazil, 8.51 ct Sri Lankan spinel, 13.00 ct Madagascar...“padparadscha” sapphire, 2.12 ct Paraíba tourmaline from Brazil. Photo of stones © GIA and Harold & Erica Van Pelt;...a poster on golden rutilated quartz from Bahia, Brazil. Near right: Designer Michael Bondanza discusses...black core (zone 1) was an Al-rich, Mn-bearing schorl. The outer core (zone 2) was a dark yellowish green...This <4-cm-wide tourmaline slice (sample I) has a schorl core surrounded by elbaite. Photo by A. Wagner |  | | Journal (issue) | | within alluvial diamonds from São Luiz, Mato Grasso, Brazil, and concluded that these diamonds may have formed...extension of the main Little Three dike, along with schorl tourmaline, smoky quartz, almandinespessartine...crystal of Brazilian rutilated smoky quartz from Teófilo Otoni. From the pressure exerted during the grinding...Hemiksem: De Maeght Daniël. Ruiselede: Lucette Nols ® BRAZIL São Paulo: Alejandro Benjamin Ferreyra, Maria Amelia...granitic pegmatites and greisens, and in emeralds from Brazil, Colombia, and Afghanistan. [Editor’s note: dD |  | | Journal (issue) | | spheres known as ballas diamond, found in the Urals, Brazil, and South Africa. Natural aggregates have varying...Choudhary. explorers) helped locate various gems in Brazil during the 1600s, which eventually led to the important...Fallbrook, California). These include Brazil (Ouro Preto and Teófilo Otoni), California (San Diego County)...lavas from the southern Paraná volcanic province, Brazil and Uruguay. By L. A. Hartmann et al. [Keith A...brazilianite sample from the Doce Valley in Minas Gerais, Brazil. The authors correlated the features seen |
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