 | Soares, D. R., Beurlen, H., Barreto, S. d. B., Da Silva, M. R. R., Ferreira, A. C. M. (2008) COMPOSITIONAL VARIATION OF TOURMALINE-GROUP MINERALS IN THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL. The Canadian Mineralogist, 46 (5) 1097-1116 doi:10.3749/canmin.46.5.1097 | Journal (article/letter/editorial) | | THE BORBOREMA PEGMATITE PROVINCE, NORTHEASTERN BRAZIL Dwight Rodrigues SOARES§ Centro Federal de Educação... 671, 58100-000, Campina Grande, State of Paraíba, Brazil Hartmut BEURLEN Programa de Pós-Graduação...State of Pernambuco, Brazil Sandra de Brito BARRETO and Marcelo Reis Rodrigues DA SILVA Departamento de...Ramos s.n., 54740-530, Recife, State of Pernambuco, Brazil Ana Claudia Mousinho FERREIRA Centro Federal de... 671, 58100-000, Campina Grande, State of Paraíba, Brazil Abstract Various species of the tourmaline-group |  | | Journal (issue) | | FEATURE ARTICLES 260 An Update on “Paraíba” Tourmaline from Brazil James E. Shigley, Brian C. Cook, Brendan...elbaites are expanding at the original deposit in Paraíba State, and similar tourmalines are also being mined...corundum from Wyoming • Green kyanite from Bahia, Brazil • “Ruby Rock” cabochons • Tourmaline from Warner...More recently, Brendan has visited Madagascar and Brazil to obtain first-hand knowledge of important gem...offers a medley of gemological topics: “Paraíba” tourmaline from Brazil, spessartine garnet from California |  | | Journal (article/letter/editorial) | | blue-to-green, copper-bearing tourmaline, the Paraíba-type, is one of the highest-priced colored gemstones...dravite–uvite species. KEYWORDS : tourmaline, gemstone, Paraíba-type, chromophores, gem deposits TOURMALINE AS...gem tourmaline found in Pederneira, Minas Gerais, Brazil. SPECIMEN FROM DANIEL TRINCHILLO ; PHOTO BY J AMES...“fluor-elbaite,” fluor-liddicoatite Blue (neon) “Paraíba-type” Cu 2+ Elbaite, liddicoatitic tourmaline...ionizing radiation (a) (b) Compiled after Zang and da Fonseca-Zang (2002), and from G. R. Rossman’s spectroscopy |  | | Journal (issue) | | Articles Cuprian elbaite from the Batalha mine, Paraíba, Brazil . . . . . . . . . . . . . . . . . ....corrosion surfaces, from the Medra mine, Minas Gerais, Brazil. Keith Proctor collection; Jeff Scovil photo. Visit...March–April, 2002 Cuprian Elbaite from the Batalha Mine, Paraíba, Brazil Wendell E. Wilson The Mineralogical...Copper-bearing “Paraíba tourmaline,” a geochemical oddity, was discovered in Brazil in 1988. Its rich...the discovery of the Batalha occurrence in the state of Paraíba, northeastern Brazil, however, none were |  | | Journal (article/letter/editorial) | | and spessartine. Historic localities are found in Brazil, Madagascar, Russia, and the United States, but...(Simmons 2007). Historically, pegmatite deposits in Brazil, Madagascar, Russia, and the United States have...Acadêmico Hélio Ramos, 54740-530, Recife, Pernambuco, Brazil E-mail: beurlen@ufpe.br E LEMENTS , V OL . 8,...right from the upper left, pink morganite beryl (Brazil, 100.99 ct, 35.96 × 25.69 mm), blue topaz (Zimbabwe...red-violet elbaite tourmaline (Brazil, 16.87 ct), blue aquamarine beryl (Brazil, 17.96 ct), orange spessartine |  | Beurlen, H., de Moura, O. J. M., Soares, D. R., Da Silva, M. R. R., Rhede, D. (2011) Geochemical and geological controls on the genesis of gem-quality "Paraiba Tourmaline" in granitic pegmatites from northeastern Brazil. The Canadian Mineralogist, 49 (1) 277-300 doi:10.3749/canmin.49.1.277 | Journal (article/letter/editorial) | | OF GEM-QUALITY “PARAÍBA TOURMALINE” IN GRANITIC PEGMATITES FROM NORTHEASTERN BRAZIL Hartmut BEURLEN§...Hélio Ramos s.n., 50740–530, Recife, Pernambuco, Brazil Odúlio J.M. de MOURA H&R Exportação e Importação...Valadares, MG, Brazil Dwight R. SOARES Instituto Federal de Educação, Ciência e Tecnologia da Paraíba (IFPB)...Lemos 671, 58100–000, Campina Grande – Paraíba, Brazil Marcelo R.R. DA SILVA Departamento de Geologia, Universidade...Hélio Ramos s.n., 50740–530, Recife, Pernambuco, Brazil Dieter RHEDE GeoForschungsZentrum Potsdam, Telegrafenberg |  | | Journal (issue) | | and Trace-element Composition of Paraíba-type Tourmaline from Brazil, Mozambique and Nigeria By Martin...cushion and ~5 ct stone in ring) and from Paraíba, Brazil (3.5 mm gems in bracelet and 4.02 ct oval)...Leonardo Silva Souto (Gems in Gems, Teófilo Otoni, Brazil) had approximately 50 cabochons weighing up to...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) | | synthetic moissanite • Fracture fillers in ruby • Paraíba tourmaline 260 Gem News • APEC 2000 report •...Colombia • Lavender sugilite with green spots • Paraíba tourmaline update • “Winebottle” tourmaline • Magnetic...in magmatic sapphires: assemblages of feldspars (albite, calcic plagioclase, Na- and/or K-rich sanidine)...Geological Congress, August 6–17, Rio de Janeiro, Brazil. Smith C.P., Kammerling R.C., Keller A.S., Peretti... GEMS & GEMOLOGY Fall 2000 243 turquoise (Brazil and Chile), based solely on their known geologic |  | | 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,...padparadscha sapphire, honey-colour chrysoberyl and Paraíba-colour tourmaline. Each includes a definition,...Ku Nam Nam Pai Stream 692 m Strea Aung Nam n Da Pa ream St 23°00' Nam Strea Mit m 96°45' Road...Mozambique is famous for producing Cu-bearing (Paraíba-type) tourmaline in a variety of colours (e.g. |  | | Journal (issue) | | Idria district. In Japan, benitoite was noted from albite-amphibole rock in a serpentinite body, along the...blueschist contains variable amounts of very finegrained albite, glaucophane-crossite, actinolitetremolite, aegerine-augite...recrystallization of fibrous amphibole and pyroxene, (2) local albite dissolution, and (3) veining and pervasive infiltration...serandite, joaquinite group minerals, apatite, albite, jonesite, and the copper sulfides djurleite, digenite...interstitial space that was previously occupied by albite. Two types of benitoite were noted by Wise and |  | | Journal (issue) | | Copper-bearing Tourmalines from New Deposits in Paraíba State, Brazil Masashi Furuya pg. 240 240 Natural Type...axinite from Pakistan • Multicolored fluorite from Brazil • Cr/V-bearing kyanite from Madagascar and elsewhere...possible diamond inclusion in quartz from Diamantina, Brazil • An unusual type of phenomenal quartz • A new...blue spinel • Dyed greenish blue chalcedony from Brazil • Conference reports 276 2007 Challenge Winners...divided between Europe and emerging markets such as Brazil, India, China, and the Middle East. The efforts |  | | Journal (issue) | | spectroscopy. 120 Gem-Quality Andalusite from Brazil Shyamala Fernandes and Gagan Choudhary Documents...Citrine from Madagascar • “Sugarcane Emerald” from Brazil • Orange kyanite from Tanzania • Rare optical phenomenon...“Gemstones and the Spectroscope” series. Minas Gerais, Brazil, supplied most of the world’s market In the 1940s...CuprianElbaite Tourmalines from São José da Batalha, Paraíba, Brazil.” The introduction of exceptionally...green tourmalines from the Brazilian state of Paraíba in 1989 capFall 1998, Fall 2001, and Fall 2004: |  | | Journal (issue) | | geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production...• Titaniumdiffused synthetic sapphire • Coated Paraíba tourmaline • Rubellite with strong “pink sleeves”... Svisero, James E. Shigley, and Robert Weldon Brazil, which commanded global production in the 1700s...Gerais and Mato Grosso, are presented. W hile Brazil is widely known for the production of colored gemstones...deposits. According to Kimberley Process statistics, Brazil produced 31,825 carats in 2015, although this figure |  | | Catalog/List | | minerals, and is found in greatest abundance in Brazil. The specimens from Uruguay, however, tend to be...contains minor amounts of the deep-red fluorescing albite as well as a greenish fluorescent and phosphorescent...CRYSTAL Pederneira Mine, São José da Safira, Doce Valley, Minas Gerais, Brazil The gem mineral: Tourmaline...62 CT Batalha Mine, São José da Batalha, Salgadinho, Paraíba, Brazil Tourmalines from the Mina da Batalha...Brazilian State of Paraíba are extremely rare and highly prized. The 1989 discovery of Paraíba Tourmalines, |  | | Journal (issue) | | 655 648 Geographic Origin Determination of Paraíba Tourmaline Yusuke Katsurada, Ziyin Sun, Christopher...Dutrow Copper-bearing gem tourmaline, known as Paraíba tourmaline after the location of its original discovery...quantitative chemical analyses to distinguish samples from Brazil, Nigeria, and Mozambique. 660 Geographic Origin...accounts for about 70% of worldwide production (Brazil, Zambia, Russia, and others). It is characterized...such as at the Santa Terezinha de Goiás deposit in Brazil. The subtype Type IIB is showcased by the Colombian |  | | Journal (issue) | | VOLUME XLIV SPRING 2008 SPRING 2008 PAGES 1– 106 Paraíba-type Tourmaline from Mozambique History of Diamond...FEATURE ARTICLES _____________ 4 Copper-Bearing (Paraíba-type) Tourmaline from Mozambique Brendan M. Laurs...this tourmaline, which typically yields bright Paraíba-like blue-to-green hues on heat treatment. pg....GEMS & GEMOLOGY SPRING 2008 COPPER-BEARING (PARAÍBA-TYPE) TOURMALINE FROM MOZAMBIQUE Brendan M. Laurs...green to yellowish green stones typically produces Paraíba-like blue-to-green hues by reducing absorption |  | | Journal (issue) | | for the near-colorless portion matched that of albite feldspar. The refractive indices we had obtained...type of rock, which contains primarily kosmochlor, albite, and possibly other minerals, is known among gemologists...Margrethe Gram-Jensen. Ruiselede: Lucette Nols BRAZIL Rio de Janeiro: Luiz Angelo CANADA Cowansville...Mines and Energy, Brazil) mentioned proposed changes to mining legislation in Brazil that are designed...1994, p. 127), the original Maxixe beryls mined in Brazil contained small amounts of cesium and lesser amounts |  | | Journal (issue) | | • Rhodonite of facet and cabochon quality from Brazil • Spessartine and almandine-spessartine from Afghanistan...reddish brown hematite flakes, growth zoning, and Brazil-law twinning, all of which provide visual clues...effect. Like amethyst from other localities (e.g., Brazil), some material from Four Peaks is heated to lighten...In transmitted light between crossed polarizers, Brazil-law twinning was obvious in all the samples studied...(2002) Natural amethyst from the Caxarai mine, Brazil, with a spectrum containing an absorption peak |  | | Journal (issue) | | Colombian Emerald Oddities Pink-Orange Euclase from Brazil Inclusions in Demantoid from Madagascar Photochromism...Small quantities of pink-orange euclase from Bahia, Brazil, recently entered the international market. This...Gérard Martayan Pink-Orange Euclase from Bahia, Brazil 44 By Lætitia Gilles-Guéry, Luiza Almeida Villar...localities, and then in Australia (Tasmania) and Brazil. At one time it was the main ore of chromium, and...JOURNAL OF GEMMOLOGY, 38(1), 202 2 19 GEM NOTES Paraíba or Not? Cu-bearing Tourmaline with a Distinct Fe |  | | Journal (issue) | | synthetic moissanite 386 Gem Notes Large kunzite from Brazil| Marble-hosted ruby mine, Mogok, Myanmar|Secondary...from Idaho|Dumortierite inclusions in quartz from Brazil|Quartz sphere with large inclusion|Zawadi sapphires|Tourmaline...Kunzite Gem Crystal from Brazil The granitic pegmatites of Minas Gerais, Brazil, are well known for producing...was mined in 1998 from the Urucum pegmatite in Brazil. Photo by B. M. Laurs. (1962, p. 287) also reported...“flawless gems exceeding 300 carats have been cut in Brazil, and the author has cut a number of much larger |  | | Journal (issue) | | inclusion | Tourmaline from the Cruzeiro Mine, Brazil | Natural diamond showing a ‘synthetic’ pattern... Bend, Oregon, USA. The quartz originated from Brazil, and it was polished on all sides except the back...Madagascar, blue halite from New Mexico, lepidolite from Brazil and tinzenite from Italy, as well as orange lizardite...g. Figure 14). Green kyanite is also known from Brazil and Tanzania, and its coloration is due to Fe3+...appeared on the market from Araçuaí, Minas Gerais, Brazil, and it is translucent and ‘tough’ enough to be |  | | Journal (issue) | | Update on Emerald Mining at Campos Verdes, Goiás, Brazil | Asteriated Quartz Sphere with Sagenitic Rutile...Update on Emerald Mining at Campos Verdes, Goiás, Brazil Campos Verdes, located about 20 km north of Santa...Santa Terezinha de Goiás in Goiás State, Brazil, was an important source of gem-quality emerald in the...hydrothermal alteration. A granitic body is exposed at São José do Alegre (a few kilometres northwest of the emerald...GEMMOLOGY, 38(4), 202 2 includes the currently active São Geraldo mine; (4) the Délio Braz section, which parallels |  | | Journal (issue) | | feathers, needle-like tubes, negative crystals, and albite inclusions. F or decades, liddicoatite from Madagascar...liddicoatite from other world localities (i.e., Brazil, Canada, “Congo,” Czech Republic, Mozambique, Nigeria...assemblages of quartz, microcline feldspar (amazonite), albite feldspar (cleavelandite), draviteelbaite-liddicoatite...appearance; feathers; needle-like tubes; pinpoints; albite, tourmaline, xenotime, and quartz inclusions; negative...dDunn et al. (1977) GEMS & GEMOLOGY SPRING 2002 Brazil; one polished slice from Vietnam; one polished |  | | 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...numerous twophase (fluid and gas) inclusions. Although Brazil is a known source of apatite, references in the...well-polished grayish blue cabochons from Minas Gerais, Brazil, were recently sent for examination to the West |  | | Journal (issue) | | amber imitation • Assembled diamond imitations from Brazil • Enamel-backed quartz as a star sapphire imitation...Also presented were the results of exploration in Brazil and in the Wawa and James Bay Lowland areas of...INTERNATIONAL Figure 9. This 19.39 ct amethyst from Brazil displays chatoyancy. Photo by Jaroslav Hyrsl. ...1996). Alfred A. Levinson Cat’s-eye amethyst from Brazil. Amethyst is one of the more common gems, but it...cat’s-eye amethysts he purchased during a visit to Brazil in summer 2000. The translucent, dark violet stones |
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