 | | Journal (article/letter/editorial) | | DepositsNear Ouro Preto, Minas Gerais, Brazil DoNAn) R. O•.SEN Abstract Topazdeposition near Ouro Preto,Minas...Minas Gerais,Brazil, tookplacein the Sabar/• formation,a Precambrian phylliteof considerable compositional...pegmatiticorigin. R. F. Johnson The precious topazdeposits near Ouro Pretoare and suggested (1962) recognized the difficultyof...Quadril/tteroFerrifero of Minas perfectly planar, concordant pegmatitesin the same Gerais. Miningwasinitiatedpriorto... Location and Geology The topaz depositsnear Ouro Preto are located O. A. Derby visitedthe area in 1901 |  | | Journal (article/letter/editorial) | | University Auburn, Alabama 36849 cookrob@auburn.edu Euclase La Marina Mine, Municipio de Pauna Boyacá, Colombia...minerals after beryl and chrysoberyl. Exceptional euclase specimens appeared at the 2016 Tucson Gem and Mineral...selection of this issue’s Connoisseur’s Choice. Euclase, BeAlSiO4(OH), is a chemically simple nesosilicate...Lacking essential chromophores in its formula, euclase is ideally colorless with a white streak, but in... or pale to deep blue. It is not fluorescent. Euclase occurs only as crystals that belong to the monoclinic |  | | Journal (article/letter/editorial) | | spodumene (kunzite, etc.), garnet, topaz, amblygonite, euclase, chrysoberyl (cat's-eye and alexandrite), sphene...Laboratory, Box 666, Dept. 2, Most of our time in Minas Gerais Truth or Consequences, New Mexico will be in...due time. Our good wishes go to marine King" of Brazil. "Pete" was a Mr. Pate for a complete recovery..."Pete's" aquamarine mines. erai and gem wealth-Brazil. We would spend much of our time (Last trip I found...a mining camp at Tres Minas Gerais (General Mines in Portuguese). Minas Gerais is presently the Barros |  | | Journal (issue) | | Moore Recent discoveries of hydroxylherderite in Minas Gerais ..............................................R. P. Richards Famous mineral localities: the Ouro Preto topaz mines ...................................Ilha do Fundao 21.910 Rio de Janeiro, Brazil INTRODUCTION Brazil is world famous for its several occurrences...prized by collectors. These occurrences, all in Minas Gerais, are described below along with the specimens...du bassin superieur du Ribeirao Laranjeiras (Minas Gerais). Anais Academia brasileira Ciencias, 54, no |  | | 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) | | 183-187, 1980 Euclasefrom Santa do Encoberto,Minas Gerais,Brazil GroRGro GnazreNr AND GroLJ Gurol Istituto...Transparenteuclasefrom Santado Encoberto,Minas Gerais, Brazil, was studiedwith regard to optical properties...famous mineralogical area of Ouro Preto, State of Minas Gerais, Brazil was once thought to be limited...Cassedanne,1974). No completestudy had been made of the euclase from this locality. Recent optical researchby Bank...inw03-004X/80/0 I 02-0I 83$02.00 clusions in the euclase,and (3) possible genetic crystallizationconditions |  | | Journal (article/letter/editorial) | | EUCLASE By RICHARD A. KOSNAR Downloaded by [JAMES COOK UNIVERSITY] at 19:54 24 August 2017 36 Osborn...Osborn St., Keyport, N . J . 0 7 7 3 5 Euclase is one of the rarest pegmatite gem minerals, and has never...the Sao Sebastao de Maranhao district of Minas Gerais, Brazil has produced, in some profusion, what have...have proved to be some of the finest gem euclase crystals ever found anywhere in the world. They are found...(yellow), and lilac-pink apatite crystals. These euclase crystals range in size from micro to an inch or |  | | Journal (issue) | | left: Euclase, 2.2 cm, from the La Marina mine, Colombia. Top right: Topaz, 8.4 cm, from Ouro Preto, Minas...Minas Gerais, Brazil. Lower left: Phosphophyllite, 2 cm, from the Unificada mine, Potosi, Bolivia. Bottom...Andrea Bartorelli: Minerals and Precious Stones of Brazil. Other important references (if any) for individual...da Cabeca mine, Parelhas, Rio Grande do Norte, Brazil. Will Johnson collection (I had to buy many unwanted...Morganite beryl, 7.5 cm, from near Araçuai, Minas Gerais, Brazil. The find predates the discovery of morganite |  | | Journal (article/letter/editorial) | | Polycrystals of Bimperial^ topaz from Minas Gerais state, Brazil Teodoro Gauzzi 1 & Gilberto Álvares da...variety that occurs in the Ouro Preto region (Minas Gerais state, Brazil). Polygonal sectors within the...gemstone variety of topaz from the Ouro Preto region, Minas Gerais state, Brazil (Silva and Ferreira Editorial...Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil 2 Department...Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil 1987). The Bimperial^ |  | Gauzzi, Teodoro, Graça, Leonardo Martins, Lagoeiro, Leonardo, de Castro Mendes, Isolda, Queiroga, Gláucia Nascimento (2018) The fingerprint of imperial topaz from Ouro Preto region (Minas Gerais state, Brazil) based on cathodoluminescence properties and composition. Mineralogical Magazine, 82 (4) 943-960 doi:10.1180/minmag.2017.081.078 | Journal (article/letter/editorial) | | fingerprint of imperial topaz from Ouro Preto 2 region (Minas Gerais state, Brazil) based on 3 cathodoluminescence...1 9 Brazil ub lis he d Department of Geology, Federal University of Ouro Preto, Ouro Preto, MG 35400-000...35400-000, 10 2 11 901, Brazil 12 3 14 ABSTRACT Pr 15 Department of Geology, Federal University...PR 81531-980, Brazil ep 13 Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte...properties of imperial topaz from Ouro 16 Preto region (Minas Gerais state, Brazil) and its relation with trace |  | | Book | | 1982 Jules Roger Sauer ” 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. “Brazil, Paradise of Gemstones’, by Jules Roger Sauer,...Century. The book is a showcase ofthe best from Brazil and it makes a handsome evocation of what is beautiful |  | | Journal (article/letter/editorial) | | grow. Impressive topaz specimens from Pakistan, Brazil, Mexico, and Russia are highly coveted by mineral...pegmatite belt; 6. Rondoni, Brazil; 7. eastern Brazil pegmatite belt (includes Ouro Preto locality); 8. tin granites...sherry-colored topaz ("imperial") is typical of the Ouro Preto, Brazil, locality, whereas fine gemquality pink topaz...and the southern Ural Mountains, in addition to Ouro Preto. Red, violet, orange, and pale green topaz is...known example. The topaz occurrences at Duro Preto, Brazil; Katlang, Pakistan; and Sanarka, Russia, are |  | Gonçalves, Guilherme O., Lana, Cristiano, Buick, Ian S., Alkmim, Fernando F., Scholz, Ricardo, Queiroga, Glaucia (2019) Twenty million years of post-orogenic fluid production and hydrothermal mineralization across the external Araçuaí orogen and adjacent São Francisco craton, SE Brazil. Lithos, 342. 557-572 doi:10.1016/j.lithos.2019.04.022 | Journal (article/letter/editorial) | | Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalves, Cristiano Lana, Ian S...Araçuaí orogen and adjacent São Francisco craton, SE Brazil, LITHOS, https://doi.org/ 10.1016/j.lithos.2019...Araçuaí orogen and adjacent São Francisco craton, SE Brazil Guilherme O. Gonçalvesa,* goncalves.go@icloud.com...Research Group, Universidade Federal de Ouro Preto, Escola de Minas, Departamento de Geologia, Campus Morro...Morro do Cruzeiro s/nº, 35400-000 Ouro Preto – MG, Brasil b Department of Earth Sciences, Stellenbosch |  | | Book | | Egypt 132 Argentina 132 Australia 133 Austria 135 Brazil 135 Bulgaria 155 Canada 156 Commonwealth of Independent...familiarity with Brazil and the importance of the 'Imperial' topaz deposits at Ouro Preto, Brazil, in the world...assumed importance) in the trade of deposits in Brazil and the former USSR, particularly those of pink...available for this research. Information on the Ouro Preto, Brazil, deposits would not have been as complete...Carlos Barbosa, Brazil; Professor J. Cassedanne, Brazil; Ora M.H. Falabella, Brazil; Dr T. Lee, Australia; |  | | Journal (article/letter/editorial) | | Colo. INrnolucrroN Euclase, AIBe(SiOn)(OH), apparently was first found in Brazil, and was brought to...mineralogists studied the crystallography of euclasefrom Brazil, lhe Austrian Alps, and the Urals. Even though...not previously been reported from North America. Euclase was first noted by the author in the greisen deposits...relatively high temperature of formation for euclase.In Brazil euclaseis found in clay-rich qsartz lenses in phyllite...Austrian euclase accompaniespericline and rutile in vuggy quartz vein deposits in mica-schist. Euclase in granite-pegmatite |  | | Journal (issue) | | Hawthorne & W. W. Pinch Fifty-nine treasure hunts in Minas Gerais . . . . . . . . . . . . . . . . . . . . . ....albite matrix, 6.6 cm, from Conselheiro Pena, Minas Gerais, Brazil. Sandor Fuss/ Stuart Wilensky specimen;...Jeff Scovil photo. For more on the minerals of Minas Gerais see Guido Steger’s memoirs in this issue. The...clusters of brilliant black, blocky or platy crystals (Brazil, South Africa); sharp crystals in groups with flashing...rhombohedral magnesite crystals, come from Brumado, Bahia, Brazil. Switzerland’s best-known locality for hematite |  | | Journal (article/letter/editorial) | | S . M . (Reprint, R & M A u g . 1 9 4 8 issue) Brazil, which is larger than the United States, consists...has heard of hardly more than one Brazilian state—Minas Geraes. W h y is this? T h e answer lies in history...general mining or Minas Geraes ( M e e nus Je r i s ) . V i l l a Rica became Ouro Preto (Black G o l d...tical organization, to be known as the State of Minas Geraes. It was the earliest Brazilian interior region...Since colonial times Ouro Preto has been re garded as the mineral capital of Brazil. Geologically that |  | | Report (issue) | | Cachoeira do Campo Dom Bosco, and Ouro Branco Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Cachoeira do Campo Dom Bosco, and Ouro Branco Quadrangles Minas Gerais, Brazil By ROBERT F. JOHNSON GEOLOGY...GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-B...the Departamento National da Producao Mineral of Brazil under the auspices of the International Cooperation |  | | Journal (article/letter/editorial) | | transparent, faceted gem stones of rose quartz from Brazil, weighing 73.50 carats and 17.50 carats respectively...donated an excellent faceted green gem apatite from Brazil. A beautiful jadeite statuette, about five ROCKS...of pink and blue tourmaline from Tiofilo Otoni, Brazil, with the Bruce fund; and a large morganite from...The gift of a large rhodochrosite stalactite from Minas Capillitas, Catamarca, Argentina, was received from...apophyllite and stilbite crystals from Rio Grande do Sul, Brazil, now exhibited at the far end of the Morgan Hall |  | | Report (issue) | | Cover: Topaz, 3.5 cm tall Capao Mine, Ouro Preto, Minas Gerais, Brazil Max and Jon Sigerman collection Robert...Zimbabwe Blue Topaz: St. Anne's Mine JAN KANIS 60. Brazil: The Land of Topaz DIETMAR SCHWARZ 68. Topaz from...locality in Brazil (Sinkankas, 1981). Two gemmy crystals from the Te6filo Ot6ni region in Minas Gerais, Brazil...three huge specimens from Te6filo Ot6ni, Minas Gerais, Brazil, that are housed at the Smithsonian Institution...left: Topaz and quartz, 2.7 cm tall; Ouro Preto, Minas Gerais, Brazil; Kiyoshi Kiikuni collection and photo |  | | Journal (article/letter/editorial) | | specimen. Figure 6 (left). Euclase, 3.7 cm high, Ouro Preto, Minas Gerais, Brazil. Alex Schauss specimen...12.7 cm high, Xanda mine, Lavra da Ilha, Minas Gerais, Brazil. Eric Long specimen. 20 ROCKS & MINERALS |  | | Journal (article/letter/editorial) | | mystical source of exceptionul specitiiens-Minus Gerais. So muny ditverenl things hud coiiie from this...then I huve hud the opportunity to visit Minus Gerais six times und ulso the greut pleusure of yetting...1986: Maklng Connections Hyman had already been to Brazil three times and had made several good contacts...the third largest city in Brazil and the capital of the state of Minas Gerais. In Belo we were happy to...from the San Diego area who made frequent trips to Brazil. He knew the dealers, he knew the gems, and he |  | Dias, L. N., Pinheiro, M. V. B., Moreira, R. L., Krambrock, K., Guedes, K. J., Filho, L. A. D. M., Karfunkel, J., Schnellrath, J., Scholz, R. (2011) Spectroscopic characterization of transition metal impurities in natural montebrasite/amblygonite. American Mineralogist, 96 (1) 42-52 doi:10.2138/am.2011.3551 | Journal (article/letter/editorial) | | aND r. schoLz5 2 1 Universidade Federal de Minas Gerais (UFMG), Departamento de Física, ICEx, CP 702...702, 30.123-970 Belo Horizonte, MG, Brazil Universidade Federal dos Vales de Jequitinhonha e Mucuri (UFVJM)...39.100-000 Diamantina, MG, Brazil 3 Universidade Federal de Minas Gerais (UFMG), Departamento de Geologia...Geologia, IGC, 31.270-901 Belo Horizonte, MG, Brazil 4 Centro de Tecnologia Mineral (CETEM), Ilha da Cidade...Janeiro, RJ, Brazil 5 Universidade Federal de Ouro Preto, Departamento de Geologia, Escola de Minas, 35400-000 |  | | Journal (issue) | | County, Virginia, Virginia, Minas Minas Gerais, Gerais, Brazil, Brazil, Madagascar, Madagascar, Sri...1.802(3) Taita Hills, Kenya 2 1.795-1.809 Minas Gerais, Brazil3 1.803-1.805 4 Composition Garnets...from Ouro OuroPreto, Preto, Imperial Brazil:chemical chemicalcharacter characterand and Brazil: thermal...Universidade Federal Ouro Preto, 35400, Ouro Preto, MG, Brazil Universidade Federal dede Ouro Preto, 35400, Ouro...Ouro Preto, MG, Brazil ABSTRACT: Imperial Imperialtopaz topazfrom fromtwo twomining miningfields fieldsnear |  | | Journal (issue) | | material comes from Itinga, Minas J. Gemm., 1980, XVII, 1 9 Gerais, Brazil. The name is from the Greek... [Manuscript received 22nd February, 1979.] EUCLASE* By SUSAN M. ANDERSON, B.Sc.(Geol.), F.G.A. I ...appear to be responsible for the formation of euclase, which replaces earlier-formed beryl crystals....herderite, hurlbutite, phenacite, chrysoberyl and euclase. Most of these remain of academic interest although...the recently exploited euclase is of potential gem and specimen value. Euclase has a general formula of |
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Ouro Preto, Minas Gerais, Brazil