 | | Journal (article/letter/editorial) | | Paulo, Rua do Lago, 562, 05508-080 – São Paulo, SP, Brazil. *e-mail: datencio@usp.br Luiz A.D. Menezes Filho...Esmeralda, 534 – Prado, 30410-080 - Belo Horizonte, MG, Brazil. INTRODUCTION The three currently recognized members...serrabrancaite. Lavra do Criminoso, Água Boa, Minas Gerais Unanalyzed “roscherite” occurs as green spherules...Fazenda Colonião, municipality of Água Boa, Minas Gerais (Dunn et al. 1979). Among collectors the best...waterclear crystals of beryl. Lavra da Ilha, Itinga, Minas Gerais Zanazziite and a triclinic Fe-dominant “roscherite” |  | | Journal (article/letter/editorial) | | net Rose (Pink) Quartz Lavra da Pitorra, Laranjeiras, Galiléia Minas Gerais, Brazil T here can be...be multiple reasons for including rose quartz crystals in your collection. One that immediately comes to...remarkable number of specimens “wear” their rose quartz crystals as halos, crowns, overgrowths, sashes...crystals or masses of smoky, milky, or colorless quartz, some exceeding 30 cm in size. This results in...intriguing and decidedly unique. Although the rose quartz crystals themselves scarcely reach 3 cm in size |  | | Journal (article/letter/editorial) | | Stewartstown, Pennsylvania 17363 john@jwkustos.com Quartz CORES in Tourmaline Crystals Figure 1. A hollow...7-cm specimen is from the Pederneira mine, Minas Gerais, Brazil. John S. White specimen and photo. M any...the American Mineralogist titled “A Pseudomorphic Quartz-Tourmaline Relationship from Northern Nigeria.”...pegmatite that have cores composed of aggregates of quartz grains. The tourmaline crystals—presumably elbaite...writes (p. 1476), appear to have been replaced by quartz, “the replacement being limited by a zone of differing |  | | Report (issue) | | Diffraction Pattern: Near the Piauí river, Itinga county, Minas Gerais, Brazil. 5.98 (100), 9.98 (90), 3.152 (90)...100.00 (1) Near the Piauí river, Itinga county, Minas Gerais, Brazil; average electron microprobe analysis...granite pegmatite. Association: Albite, microcline, quartz, elbaite, lepidolite, schorl, eosphorite, moraesite...pegmatite near the Piauí river, Itinga county, Minas Gerais, Brazil. Name: Honors the Brazilian mineralogist...Material: Geology Museum, University of São Paulo, Brazil (DR 591). References: (1) Chukanov, N.V., D. Atencio |  | Chukanov, Nikita V., Atencio, Daniel, Zadov, Alexander E., Filho, Luis A.D. Menezes, Coutinho, Jose M.V. (2007) Guimarãesite, a New Zn-dominant Monoclinic Roscherite-group Mineral from Itinga, Minas Gerais, Brazil. New Data on Minerals, 42. 11-15 | Journal (article/letter/editorial) | | MONOCLINIC ROSCHERITEGROUP MINERAL FROM ITINGA, MINAS GERAIS, BRAZIL* Nikita V. Chukanov Institute of Problems...Geociê ncias, Universidade de Sã o Paulo, Sã o Paulo,Brazil; datencio@usp.br Aleksander E. Zadov NPO "Regenerator"...Esmeralda, 534, Prado, 30410080, Belo Horizonte, MG, Brazil José M.V. Coutinho Instituto de Geociê ncias,... Universidade de Sã o Paulo, Sã o Paulo,Brazil; datencio@usp.br G u i m a r ã e s i t e 1 , Ca2(Zn,Mg...river, Itinga county, Minas Gerais, Brazil. Associated minerals are: albite, microcline, quartz, elbaite |  | | Report (issue) | | Pattern: Lavra Ponte do Piauí pegmatite, Itinga, Minas Gerais, Brazil. 3.043 (100), 5.54 (80), 2.774 (80)...(1) Lavra Ponte do Piauí pegmatite, Itinga, Minas Gerais, Brazil; average electron microprobe analysis...secondary mineral in phosphate nodules near the quartz core of a complex granitic pegmatite, formed during...elbaite, quartz. Distribution: From the Lavra Ponte do Piauí pegmatite, Itinga, Jequitinhonha, Minas Gerais...Gerais, Brazil. Name: Honors American mineralogist and crystallographer William R. Cook Jr. (1927-2006) and |  | Atencio, D., Filho, R. R. C., Mills, S. J., Coutinho, J. M. V., Honorato, S. B., Ayala, A. P., Ellena, J., de Andrade, M. B. (2011) Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement. American Mineralogist, 96 (10) 1455-1460 doi:10.2138/am.2011.3594 | Journal (article/letter/editorial) | | Rankamaite from the Urubu pegmatite, Itinga, Minas Gerais, Brazil: Crystal chemistry and Rietveld refinement...562, 05508-080 São Paulo, SP, Brazil 2 Rua Murici 62, Campinas, SP, Brazil 3 Department of Earth and Ocean...Ceará, Caixa Postal 6030, 60455-900 Fortaleza, CE, Brazil 5 Departamento de Física e Informática, Instituto...Paulo, Caixa Postal 369, 13560-970 São Carlos, SP, Brazil 1 aBStRact A new occurrence of rankamaite is here...described at the Urubu pegmatite, Itinga municipality, Minas Gerais, Brazil. The mineral forms cream-white |  | | 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 |  | | Report (issue) | | Pattern: Cruzeiro mine, São José da Safira, Minas Gerais, Brazil. 2.568 (100), 2.939 (92), 3.447 (67), 3... (1) Cruzeiro mine, São José da Safira, Minas Gerais, Brazil; average of 10 electron microprobe analyses...solutions in a zoned granitic pegmatite. Association: Quartz, muscovite, lepidolite, spodumene, spessartine...São José da Safira and the Urubu mine, Itinga, Minas Gerais, Brazil. Name: As an elbaite with dominant fluorine |  | | Journal (article/letter/editorial) | | das Pedras, CEP 30140-970 Belo Horizonte, Minas Gerais, Brazil National Commission of Nuclear Energy, Center...Postal 941, CEP 30123-970 Belo Horizonte, Minas Gerais, Brazil 3 Department of Geology, Federal University...Preto, Minas Gerais, CEP 35400-000 Brazil 4 Institute of Geosciences, Federal University of Minas Gerais...Gerais, Belo Horizonte, Minas Gerais, CEP 30430-120, Brazil ABSTRACT Two different behaviors controlled...pegmatites from the Araçuaí area, northeast Minas Gerais state, Brazil. Brought to you by | New York University |  | Hatert, Frédéric, Philippo, Simon, Ottolini, Luisa, Dal Bo, Fabrice, Scholz, Ricardo, Chaves, Mário L.S.C., Yang, Hexiong, Downs, Robert T., Menezes Filho, Luiz A.D. (2017) Wilancookite, (Ba, K, Na)8 (Ba, Li, [])6 Be24 P24 O96·32H2O, a new beryllophosphate with a zeolite framework. European Journal of Mineralogy, 29 (5) 923-930 doi:10.1127/ejm/2017/0029-2661 | Journal (article/letter/editorial) | | Ponte do Piauí complex granitic pegmatite, Minas Gerais, Brazil. It occurs as tiny dodecahedral {1 1 0}...montebrasite, Li-bearing micas, cassiterite, elbaite and quartz, while the secondary phosphate association contains...Escola de Minas, Departamento de Geologia, Campus Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil 5 Universidade...Universidade Federal de Minas Gerais (UFMG), Instituto de Geociências, Avenida Antônio Carlos, 6627, 31270-902...31270-902 Belo Horizonte, MG, Brazil 6 Department of Geosciences, Gould-Simpson Building, University of |  | | Report (issue) | | Jocão (Cigana) claim, Conselheiro Pena, Minas Gerais, Brazil. The specimens consist of intergrown crystal...Jocão (Cigana) claim, Conselheiro Pena, Minas Gerais, Brazil. Weinrich Minerals, Inc. specimen and photo...“steps” on its faces, perched on a bit of matrix with quartz and dolomite crystals. Of course we already know...(exploitation of which is the quarry’s purpose), with small quartz crystals and green chlorite dustings. The specimen...different-looking piece has a 1-cm fan of blue crystals in a quartz-lined vug, with green hemimorphite; and still a |  | | Journal (article/letter/editorial) | | locality is the Jacupiranga mine, Cajati, São Paulo, Brazil. Menezesite occurs in small microcrystal-lined...of Junior or Jr. Menezes was born in São Paulo, Brazil, on 5 October 1950, to Luiz Alberto Dias Menezes...gave him a sticker book titled Natural Richness of Brazil. Some of the stickers showed plants and animals...budding interest by taking him on a trip to Minas Gerais so he could visit mining areas and collect real...bring him minerals acquired on business trips in Brazil and overseas. At age twelve, Menezes started a |  | | Report (issue) | | in (Cs,Al), (Na,Si), or (Cs,Na,Al) with exsolved quartz. Physical Properties: Cleavage: In traces. Fracture:...pegmatites; may be in kiloton amounts. Association: Quartz, spodumene, petalite, amblygonite, lepidolite,...Canada. From the Taquaral district, Itinga, Minas Gerais, Brazil. Large crystals from the Shengus, Skardu |  | | Catalog/List | | ANTIMONY rich silvery cleavages about 80% pure with quartz Kalliosola Seinajoki Finland 3xl. 5cm £25 B) smaller...crystal is 1.5cm high Telirio Mine, Linopolis Minas Gerais Brazil with previous dealers label £55 overall size...location 1.5cm £4 23 LAZULITE blue coating on quartz 1.5cm Giogo di Toirano Savona Italy £4 24 NAMANSILITE...FERRIHOLLANDITE 8mm grey fibrous crystals in a 8mm area on quartz with some Piedmontite elongated crystals. Castagnola...GRAPHIC AMAZONITE a polished piece (all over) with quartz showing the graphic structure in blue Amazonite |  | | 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) | | The EBPP is situated mainly in the State of Minas Gerais, but encompasses also parts of the States of...Universidade Federal de Minas Gerais, Av. AntoÃnio Carlos 6277, 31 000 Belo Horizonte MG, Brazil the context of...Argentina, (2) the north-eastern or Borborema in Brazil, and (3) the Eastern Brazilian. A description of...pegmatites of the north-eastern Pegmatite Province of Brazil and their geochemistry have been studied by Beurlen...Province (EBPP) is situated mainly in the State of Minas Gerais but also encompasses the southern part of the |  | | Journal (article/letter/editorial) | | attributable to the sample mounting tape. of milky quartz, transparent calcite, prehnite, and graphite covered...in an open space and was never encased by vein quartz. Many years ago I consulted for a company that...n t with the quartz veining. I suspect that this gold specimen formed within a quartz-carbonate vein....net Etched Topaz Teixerinha Mine, Itinga, Minas Gerais, Brazil Photograph by Joe Budd Edward Rosenzweig |  | | Report (issue) | | lepidolite, tourmaline, topaz, albite, microcline, quartz. Distribution: On the Island of UtÄo , and in...pegmatite, Bernic Lake, Manitoba, Canada. In Brazil, from Minas Gerais, in the Maxixe, Lavra Velha, and Lavra...pegmatites, near Ara»cua¶³, and in the Taquaral mine, Itinga. In the Londonderry quarry, Coolgardie, Western |  | | Report (issue) | | conditions; may be detrital or authigenic. Association: Quartz, plagioclase, potassic feldspar, biotite, tourmaline...Ontario, Canada. In Brazil, in Minas Gerais, at Urucum, from the Taquaral mine, Itinga, and in the Jos¶e |  | | 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,...(Figure 4b), spessartine (Figure 4c), almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite...tourmaline (Figure 4d), aquamarine, spessartine, quartz, topaz, zircon and phenakite are mined. Tourmaline...Junior (BC Gemas do Brasil, Governador Valadares, Brazil), and heating to 500°C in air was successful in |  | | 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 |  | | Report (issue) | | detrital in sediments. Association: spodumene. Quartz, albite, lepidolite, microcline, garnet, muscovite...Diego Co., California. In Brazil, from a large district around Ara»cua¶³-Itinga-Salinas, and the Itatiaia...Itatiaia district, Governador Valadares, Minas Gerais; at S~ao Jos¶e da Batalha, Para¶³ba. Name: From the |  | | Journal (article/letter/editorial) | | MINERALS collection of local minerals, particularly quartz, pyrite, and galena. In fact, Keith still owns...1967 in the Pioneira mine, Teofilo Otoni, Minas Gerais, Brazil. Downloaded by [Stockholm University Library]...Barra de Salinas mine, Aracuai-Itinga district, Minas Gerais, Brazil. Although the owner did not wish...specializing in colored gemstones. Keith's travels in Brazil in search of gems and crystal specimens have added...gemmy red tour malines from the Jonas mine in Brazil have sold for several hundred thousand dollars |  | | Journal (issue) | | Top right: Topaz, 8.4 cm, from Ouro Preto, Minas Gerais, Brazil. Lower left: Phosphophyllite, 2 cm, from...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...to get this specimen, a complete floater, for my Brazil collection); Tom Spann photo. Reference: Cassedanne |
|
Taquaral, Itinga, Minas Gerais, Brazil