 | | Journal (issue) | | left) Elbaite, 4.5 cm, Sapo mine, Goiabeira, Minas Gerais, Brazil; Gus Eitler collection; Joe Budd photo.... Kunzite spodumene, 11 cm, Urucum mine, Minas Gerais, Brazil. Ex Steve SmaJe collection. Joe Budd photo...albite, 12 cm, Telirio mine near Linopolis, Minas Gerais, Brazil. Joe Budd photo. Gold, 8 cm, St. Johns,...cm, Pederneira mine, Sao Jose da Safira, Minas Gerais, Brazil. Joe Budd photo. Pyromorphite, 12 cm, Daoping...mine, Penha do Norte, Conselheiro Pena, Minas Gerais, Brazil. Joe Budd photo. 12 Supplement to The |  | | Book | | ltatiaia, Conseilheiro Pena, Governador Valadares, Brazil (Roger Titeux collection, France) 4 inches. Above:...inches. Right: Rutile in quartz, lbitiara, Bahia, Brazil (Yves Gillet collection, France) 1.2 inches. Preceding...Preceding pages: A Tourmaline, Minas Gerais, Brazil (4.2 inches) B Tourmaline, Queen Mine, San Diego County...are only colored and transparent varieties of corundum, an aluminum oxide which in its pure, raw state...order to extract the gems. Such was the case in Brazil with diamonds; it is still used in the deposits |  | | Journal (article/letter/editorial) | | [Laurentian University] at 02:10 27 October 2013 Minas Gerais, Brazil O ne of the most interesting and at times...staurolite, amphiboles, the other aluminosilicates, and corundum. It is often replaced by micas, and psuedomorphs...County, Connecticut. Kyanite associated with blue corundum is found at Newtown and Roxbury, and Schairer...attractive 7.3-cm kyanite crystal on quartz from Minas Gerais, Brazil. The Marcus Grossmann specimen was photographed...Barra da Salinas, Coronel Murta, Minas Gerais, Southeast Region, Brazil. Arkenstone photo. mentions that |  | | Book | | Formed in Pegmatites: 57 Gem Pegmatites of Minas Gerais, Brazil 5. Gemstones Formed Directly from Molten...Colombia as an example; the pegmatites of Minas Gerais, Brazil; and those gemstones formed in a magma at...including The Gem Collection of the Smithsonianj Brazil, Paradise ofGemstonesj Emerald and Other Berylsj...MEXICO Ag.UB SuECo. CHI HUAHUA MeXICO ~ tRIO$. BRAZIL DtamOIH~ Tu'QuorSiIl ALLUVIAL GEM DEPOSITS Agate...ru)8AGI. BRAZIL OlamorM' DI~mond Drarnolld PARANAICAo BRAZIl. CORQPYlAN OEL. BRAZIL. BRAZIL. OIAMANTlNA | | | Book | | Formed in Pegmatites: 57 Gem Pegmatites of Minas Gerais, Brazil 5. Gemstones Formed Directly from Molten...Colombia as an example; the pegmatites of Minas Gerais, Brazil; and those gemstones formed in a magma at...including The Gem Collection of the Smithsonianj Brazil, Paradise ofGemstonesj Emerald and Other Berylsj...MEXICO Ag.UB SuECo. CHI HUAHUA MeXICO ~ tRIO$. BRAZIL DtamOIH~ Tu'QuorSiIl ALLUVIAL GEM DEPOSITS Agate...ru)8AGI. BRAZIL OlamorM' DI~mond Drarnolld PARANAICAo BRAZIl. CORQPYlAN OEL. BRAZIL. BRAZIL. OIAMANTlNA |  | | Journal (issue) | | Cuprian Liddicoatite Siliconâs Role in the Color of Corundum 2017 Tucson Report Editorial Staff Editor-in-Chief...Diamonds, Cuprian Liddicoatite, and Silicon in Corundum Duncan Pay FEATURE ARTICLES 2 Brazilian Diamonds:...geology, and notable localities of diamond mining in Brazil, and outlines plans for future diamond production... 42 The Role of Silicon in the Color of Gem Corundum John L. Emmett, Jennifer Stone-Sundberg, Yunbin...Diamonds, Cuprian Liddicoatite, and Silicon in Corundum Welcome to the first Gems & Gemology of 2017! |  | | Journal (article/letter/editorial) | | p. 80; Micromount. Jan.-Feb., p. 26; The Crazy Corundum. May, p. 180; Micromounters Cornerâ Obtaining...Gem Collections. Nov., p. 441 Kase, Linda. Minas Gerais, Brazil-A Happy Hunting Ground. Jan.-Feb., p. 22...Arkansas. Woodland G. Shockley. Dec, p. 495 BrazilâMinas Geras, BrazilâA Happy Hunting Ground. Linda Kase. Jan...from Conejos County, Colorado. AmethystâMinas Gerais, Brazil-A Happy Richard S. Mitchell. Oct., p. 394... June, H. Howell. Oct., p. 412 p. 237 CorundumâCrazy Corundum. Bruce L . Analcimeâ Analcime and Thompsonite |  | | Book (volume) | | Co., Colorado, 43 Apatite Golconda Mine, Minas Gerais, Brazil, 13 Laghman, Nuristan, Afghanistan, 31 Panasqueira...Nigeria, 15 Medina Mine, Minas Gerais, Brazil, 36 Teofilo Otoni, Minas Gerais, Brazil, 27 Azurite (with Malachite)...Keweenaw Peninsula, Houghton Co., Michigan, 45 Corundum (see Ruby) Cryolite Arsuk Fjord Mine, Ivitgut...Corrego do Urucum, Minas Gerais, Brazil, 29 Conselheiro Pena, Minas Gerais, Brazil, 8 Painera Mine, Virgem...Virgem Da Lapa, Brazil, 24 Phosgenite Touissit, Oujda, Morocco, 19 Phosphophyllite Unificada Mine, Cerro |  | | 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 AracuaĂ, 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 AracuaĂ, Minas Gerais, Brazil (Cassedanne and Cassedanne 1981). A spectacular...lavender crystals are found at AracuaĂ, Minas Gerais, Brazil. Distinctive spherical and stalactitic masses |  | | Journal (issue) | | 3 FEATURE ARTICLES Gem Pegmatites of Minas Gerais, Brazil: The Tourmalines of the Araquai Districts...tourlnaline thon anywhere else in the world-Minos Gerais, Brazil; the other with (I new locality for red tourmaline-Zcrmbia...thousand miles south, to the "Gem Pegmatites of Minas Gerais." THe first in a series (which Cdntinues in...his extensive travels in the mining regions of Brazil. Mr. Proctor received an M.S. in molecular biology...graduate gemologist. GEM PEGMATITES OF MINAS GERAIS, BRAZIL: THE TOURMALINES OF THE ARACUAI DISTRICTS |  | | Journal (article/letter/editorial) | | muscovite variety damourite has been collected from Corundum Hill, Unionville, Chester County, Pennsylvania...specimen in the collection from Corundum Hill forms a rind around corundum. Large, almost black books of...from LinĂłpolis, Divino das Laranjeiras, Minas Gerais, Brazil. The field of view is 3 cm. Van King specimen...from LinĂłpolis, Divino das Laranjeiras, Minas Gerais, Brazil. Superior specimens of âstartwinnedâ muscovite...wide, from the Xanda mine, Virgem da Lapa, Minas Gerais, Brazil. Luiz Menezes specimen, Jeff Scovil photo |  | | Journal (issue) | | 812-21. Game, P. M. (1954) Zoisite-amphibolite with corundum from Tanganyika. Min. Mag., 30, 458-66. Hurlbut...much from Sri Lanka, Australia and Colombia and Brazil, but what impressed me most was the extent of the...reminiscence of a specific find of gem crystals in Minas Gerais in 1947 and their subsequent use in part by...most valuable gem found in Kenya is undoubtedly corundum, which occurs as ruby, sapphire and in other varieties...(P.B.), WILSON (W.E.). Hydroxyl-herderite from Brazil and a guide to species nomenclature for the he |  | | Journal (article/letter/editorial) | | gemological euclase (chemical formula BeAlSiO4(OH)) from Brazil were investigated by electron paramagnetic resonance...Universidade Federal de Minas Gerais, ICEx, CP 702, 30.123-970 Belo Horizonte, MG, Brazil e-mail: klaus@fisica...euclase from the Santa do Encoberto mine in Minas Gerais state, Brazil, were studied by electron paramagnetic...together with chromium as for example in beryl, corundum and zoisite (Hutton et al. 1991; Laurance and...Santa do Encoberto mine in the state of Minas Gerais, Brazil, were chosen for our investigation and characterized |  | | Book | | For exarnple, ruby is Lhe blood-red variety of corundum as well as the nan1e of the gem. The captions...SULFATES Fluorite CaF1 65- 70 OXIDES AND HYDROXIDES Corundum (see gems also) Al 2O3 74- 75 Hematite Fe2 O3...,,, N C ~ ~ iu (0 L.L ~ ~ u 73 74 Corundum (Variety Ruby) in W11ite Marble Jagdalak, Afghanistan...Crystal 4 cm (11/1 in.) long lntergrown Water-worn Corundum (Variety Sapphire) Crystals Sri Lanka 5 cm (2...across 81 Twinned Chrysoberyl 82 Espirito Santo, Brazil 8 cm (3'/a 1n ) across Spine) on Rock Matrix |  | | Journal (article/letter/editorial) | | and Palache et al. (1951) as Diamantina, Minas Gerais, Brazil. From the results of a preliminary analysis...Sgo Paulo) labelled as 'Ferrazita. Diamantina, Minas Gerais' (Sample 41.5.8.1/3 - 625A/1). The sample was...2+ 4+ 4+ 1. 'Ferrazite' from Diamantina, Minas Gerais, Brazil. Cu-K~t radiation. 2. Gorceixite from the...andesine (0.06-0.12) microcline (29.54-32.42) corundum (1.11-8.40) hematite (25.13-27.28) InP (0.65-1... (OH)6. 2. 'Ferrazite' from Diamantina, Minas Gerais, Brazil (Average of 10 analyses: H20 by difference) | | | Journal (article/letter/editorial) | | and Palache et al. (1951) as Diamantina, Minas Gerais, Brazil. From the results of a preliminary analysis...Sgo Paulo) labelled as 'Ferrazita. Diamantina, Minas Gerais' (Sample 41.5.8.1/3 - 625A/1). The sample was...2+ 4+ 4+ 1. 'Ferrazite' from Diamantina, Minas Gerais, Brazil. Cu-K~t radiation. 2. Gorceixite from the...andesine (0.06-0.12) microcline (29.54-32.42) corundum (1.11-8.40) hematite (25.13-27.28) InP (0.65-1... (OH)6. 2. 'Ferrazite' from Diamantina, Minas Gerais, Brazil (Average of 10 analyses: H20 by difference) |  | | Journal (article/letter/editorial) | | JanuarylFebruary: Tourmaline on quartz, Cruzeiro mine, Minas Gerais, Brazil. Los Angeles County Museum of Natural History...Colorado, 337, 382 Actinolite, Bahia, Brazil, 36 Agardite-(Y), Bahia, Brazil, 38 Agate, 259-67 Aikinite, Colorado...Albite. Maine, 4 12 Alexandrite, Hematitia, Minas Gerais, Brazil, 23 Almandine, Maine, 412 Alunite, Utah...225 Anatase, Bahia, Brazil, 3.5 Andalusite, Michigan, 96 Anhydrite, Bahia, Brazil, 39; Colorado, 397;...Bahia, Brazil, 38; Madagascar, 256; Michigan, 96; Ohio, 255 Aquamarine, Minas Gerais, Brazil, 19, 25 |  | | Journal (article/letter/editorial) | | Laboratory, Carlsbad, California BRAZIL IMPRESSIONS: I have only been to Brazil twice, but 1 did see a lot...most expensive real estate. While on a tour in Brazil in the early 198Os, our bus was stopped by the...begging everyoneâs forgiveness. My second trip to Brazil was in 1987 as a member of the International Gemological...Conference group. I had a wonderful time on both trips. Brazil is a beautiful country, one full of contrasts....Fallbrook, California FIRST TRIP TO BRAZIL: I have a number of memories of Brazil, but perhaps the most vivid |  | | Journal (issue) | | Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct grossular... California; (6) 15.18-ct tourmaline, Paraiba, Brazil; (7) 10.42-ct tanzanite, Tanzania; (8) 6.09-ct...38-ct ruby, Burma; (17) 3.08ct tourmaline, Paraiba, Brazil; (18) 1.85-ct fancy purple-pink diamond, Argyle...number of new localities. Fine alexandrites from Brazil, sapphires from Southeast Asia and Australia, emeralds...pegmatite gemstones (tourmaline, aquamarine, etc.) from Brazil, Pakistan, Afghanistan, and several countries in |  | | Catalog/List | | twinned crystal ( Telino Mine, Linopolis, Minas Gerais Brazil) ÂŁ25 3. GOETI-TITE on QUARTZ small golden...laranjeiras, Minas Gerais Brazil 1.5 x 1.5 inches ÂŁ48 - i 7. 8. Jocao Mine, Galileia, Minas Gerais Brazil...5 inch Golconda Mine, Governador Valadares, Minas Gerais ÂŁ48 ARAGONITE lustrous reddish-brown pseudohexagonal...smaller rhombs round the edges. (Brumado, Bahia, Brazil) ÂŁ60 (see left) CASSITERITE pure brown masses,...(Linopolis district, Divino das Laranjeiras, Minas Gerais, Brazil) ÂŁ 18 29. FLUOCERITE rich orange brown mass |  | | Book | | Rocks Beryl Topaz Tourmaline Feldspars Rutile Corundum-Ruby .... Chrysoberyl Spodumene (Triphane) Garnets...Cinnabar 68 Cooper arsenates . . . .100 Crocoite 84 Corundum/Ruby 32 Cumengeite 94 Crysoberyl 34 Cuprite 92...Beryl/Aquamarine (Teofilo-Otoni, Minas Gerais, Brazil): 12 cm. 2 - Muscovite (Minas Gerais, Brazil): 30 cm. 20 r.v-^â...emeralds, beryls are minerals from pegmatites. In Brazil, a geode measuring 45 x 25 x 15 yards has been...1 - Beryl/Morganite (Corrego-do-Urucum, Minas Gerais, Brazil): 25 cm. 2 - Beryl/Heliodorus (Siberia, |  | | Journal (article/letter/editorial) | | University] at 06:28 19 January 2015 Minas Gerais and Bahia, Brazil, and Takovaya, Russia W e hold in...Bahia, Brazil. belonging to mineral dealer Russ Behnke. B: A 1.1-cm crystal from Minas Gerais, Brazil, in...as small tabular crystals in the corundum-bearing rock at the corundum deposit near Stocking Meadows, Shoshone...(alexandrite), and Americana, Te6filo Otoni, Minas Gerais. A most interesting chronicle of the collection...and in an unusual occurrence in dolomite with corundum at Campolungo near Saint Gotthard, Switzerland |  | | Book | | 1982 Jules Roger Sauer â Foreword For years Brazil has been the major producer of colored stones in...metamorphic rocks, the variety of gem deposits in Brazil is almost infinite. In addition to the mineral...assemblage one might expect from pegmatite dikes, Brazil also produces a very significant output of diamonds...written in English, and beautifully illustrated. âBrazil, Paradise of Gemstonesâ, by Jules Roger Sauer,...Century. The book is a showcase ofthe best from Brazil and it makes a handsome evocation of what is beautiful |  | | | | dihydrate from Boca Rica mine, GalilĂ©ia, Minas Gerais, Brazil, and other occurrences DANIEL ATENCIO,1...Paulo, Rua do Lago, 562, 05508-080, SĂŁo Paulo, SP, Brazil 2 Naturhistorisches Museum, Augustinerstrasse 2...SĂŁo Vicente, SP, Brazil 5 Rua Esmeralda, 534âPrado, 30410-080, Belo Horizonte, MG, Brazil 1 ABSTRACT The...pegmatite, Sapucaia do Norte, GalilĂ©ia Co., Minas Gerais, Brazil. It occurs as: (1) white short prismatic...Norte, GalilĂ©ia Co. (19Âș0'S 41Âș32'W, DMS), Minas Gerais, Brazil, in 2002 by one of us (LADMF). Additional |  | Atencio, Daniel, Coutinho, JosĂ© M.V., Graeser, Stefan, Matioli, Paulo A., Menezes Filho, Luiz A.D. (2004) Lindbergite, a new Mn oxalate dihydrate from Boca Rica mine, GalilĂ©ia, Minas Gerais, Brazil, and other occurrences. American Mineralogist, 89 (7) 1087-1091 doi:10.2138/am-2004-0721 | Journal (article/letter/editorial) | | dihydrate from Boca Rica mine, GalilĂ©ia, Minas Gerais, Brazil, and other occurrences DANIEL ATENCIO,u...Paulo, Rua do Lago, 562, 05508-080, SĂŁo Paulo, SP, Brazil ' Naturhistorisches Museum, Augustinerstrasse 2...Vicente, SP, Brazil ' Rua Esmeralda, 534- Prado, 30410-080, Belo Horizonte, MG , Brazil ĂBSTRACT The...pegmatite, Sapucaia do Norte, GalilĂ©ia Co., Minas Gerais, Brazil. It occurs as: (1) white short prismatic...Norte, GalilĂ©ia Co. (19Âș0'S 41Âș32'W, DMS), Minas Gerais, Brazil, in 2002 by one of us (LADMF). Additional |
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Minas Gerais, Brazil