 | | Book | | artist as well, mainly for its role in rutilated quartz and star sapphire. These minerals are also important...occasionally faceted, that looks very similar to rutilated quartz is the so-called it the stones tend to be so dark...rutilated topaz, which was first marketed from Brazil and t are virtually opaque. Colorless synthetic...plays in creating asterism in star sapphire tilated quartz, working it into attractive faceted stones, and... A fine example of rutilated quartz crystals from Minas Gerais, Brazil. Specimen is about I I cm tall |  | | Book | | until he managed to reach the land of his dreams, Brazil. A specialist in the field of geology and mineralogy...France acquired his remarkable collection of giant quartz crystals, exhibited in the National Museum of Natural...crystals and the remarkable mineral treasures of Brazil, as well as the incredible adventures and difficulties...CRYSTALS GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL Cyan Magenta...Crystals GIANT QUARTZ CRYSTALS UNIQUE MINERALS IN WORLD MUSEUMS GEM TREASURES OF BRAZIL SOFIA–MOSCOW |  | | Journal (issue) | | 0026-4628 'Continued on p. 415 Articles Diamonds in Brazil .................................................Pitman New data on the cause of smoky and amethystine color in quartz ..................................35565, Tucson, AZ 85740. BLUE QUARTZ A synthetically colored blue quartz (trade named “Aqua Aura”) was...layered dot pattern of metallic gold on colorless quartz. The effect is striking, and the treated crystals...Fundao 21.910 Rio de Janeiro, Brazil Since their discovery in Minas Gerais, near the town of Diamantina |  | | Journal (article/letter/editorial) | | Quadrilátero Ferrífero, Minas Gerais, Brazil Luiz Cláudio Ribeiro-Rodrigues a,⁎, Claudinei Gouveia de Oliveira b...Caratinga, BR-116, km 526, Caratinga-MG, 35 300-970, Brazil b Instituto de Geociências, Universidade de Brasília...Brasília, Campus Asa Norte, Brasília-DF, 31270-901, Brazil c Institute of Mineralogy and Economic Geology...northern part of the Quadrilátero Ferrífero, Minas Gerais State, Brazil. The region constitutes an Archean granite–greenstone...by the Proterozoic supracrustal sequences of the Minas (<2.6–2.1 Ga) and Espinhaço (1.7 Ga) supergroups |  | | 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 (issue) | | uscovite from the Ze Pinto prospect, M inas Gerais, Brazil ............................................. Alves Crystallized rose quartz from Alto da Pitora, M inas Gerais, Brazil ............................Alves Zanazziite, a new mineral from M inas Gerais, Brazil .............................................from Lavra da Ilha, Taquaral district, M inas Gerais, Brazil .............................................Universitaria Ilha do Fundao 21.190, Rio de Janeiro, Brazil Jeanete Alves Departamento de Recursos Minerals |  | | Journal (issue) | | uscovite from the Ze Pinto prospect, M inas Gerais, Brazil ............................................. Alves Crystallized rose quartz from Alto da Pitora, M inas Gerais, Brazil ............................Alves Zanazziite, a new mineral from M inas Gerais, Brazil .............................................from Lavra da Ilha, Taquaral district, M inas Gerais, Brazil .............................................Universitaria Ilha do Fundao 21.190, Rio de Janeiro, Brazil Jeanete Alves Departamento de Recursos Minerals |  | | Journal (issue) | | diamond, corundum) 2. Quartz-hard, can be filed with difficulty (Examples: garnet, quartz) 3. Feldspar-hard...scratch quartz (Examples: diamond, corundum) 2. Substances that scratch glass (Examples: quartz, peridot... Calcite 4. Fluorite 5. Apatite 6. Feldspar 7. Quartz 8. Topaz 9. Corundum 10. Diamond Table 1. Collation...1924). (standardized to corundum = 1000 and to quartz = 100) (Malzahn 2000) Mohs Hardness Mohs assigned...Diamond...-- 1 Mineral Test Plane Corund. = 1000 Quartz = 100 Talc Aggreg. 0.62 0.59 Gypsum (001) |  | | Journal (issue) | | published by the Direc^ao dos Servicos de Geologia e Minas, (DSGM), Mozambique.) pegmatites of Alto Ligonha...bismuthinite, monazite, stibiomicrolite, cassiterite, quartz gems (3), garnet, topaz, zircon, cookeite, samarskite...ferrocolumbite, cassiterite, bismutite, topaz, quartz gems. Group 3: Mines: Piteia Nahia, Mirrucue. Minerals:...Minerals: Ferrotantalite-ferrocolumbite, quartz, quartz gems, topaz, lithium minerals, bismutite, mica...lilac). 3Quartz gems include colorless, smoky, rose and citrine quartz of gem quality. The Mineralogical |  | | Book | | com/series/10172 Jens Götze Robert Möckel • Editors Quartz: Deposits, Mineralogy and Analytics 123 Editors...and reflect the state of the art in the field of quartz and silica raw materials. The book covers the broad...The chapters are dealing mainly with the mineral quartz, which is one of the most frequent minerals of...with the processing and technical application of quartz and SiO2 material. The 15 chapters of the book...exploration and qualification of potential deposits of quartz raw materials in terms of certain technical applications |  | | Journal (issue) | | in quartz ... 137 by R. B. Cook Hureaulite and barbosalite from Lavra do Criminoso, Minas Gerais, Brazil...Itambacuri, Brazil Fazenda Anglo mine, Itambacuri, Brazil Morro Agudoz mine, Piracicaba, Brazil Conselheiro...Rio Doce, Brazil Virgem da Lapa District, Minas Gerais, Brazil Aricanga mine, Cruzeiro, Brazil Santa Maria...Diamantina, Brazil Morro Velho mine, Nova Lima, Brazil Dom Bosco/Saramenha mine, Ouro Preto, Brazil Lavra da...da Ilha, Itinga, Brazil Golconda mine, Minas Gerais, Brazil Campos mine, Campos, Brazil Ashley mine, Lightning |  | | Book | | Litchfield County, where good crystals were taken from quartz veins in a variety of metamorphic, plutonic and...Litchfield, where a mass of white quartz on a ridge had once been mined for quartz, and large ilmenite masses...ilmenite crystals to 7 .5 cm in matrix of massive quartz from these dumps-adding that, in his judgment,...Watson, Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized...major associations of Swiss hematite iron roses are quartz, ortboclase, albite, rutile, and zeolites (especially |  | | Journal (issue) | | volume. Commonly the geodes contain heulandite and quartz, and rarely also mordenite, stilbite and calcite...crystallization of quartz also took place; thus white, spheroidal aggregates of quartz can be found in the...This heulandite coating may itself be covered by quartz; euhedral crystals of first-generation heulandite...(up to few millimeters in size) forming above the quartz cover are rare. Heulandite of the second generation...transparent crystals of typical heulandite habit on the quartz layer. The crystal size rarely exceeds a few millimeters |  | | 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 | | | Journal (issue) | | Bancroft The occurrence of Japan-law twinning in quartz ... 137 by R. B. Cook Hureaulite and barbosalite...barbosalite from Lavra do Criminoso, MinasGerais, Brazil ........................... 147 by P. J. Dunn, P. B....Fazenda Anglo mine, Itambacuri. Brazil Morro Agudoz mine, Piracicaba. Brazil Conselheiro Pena area, Rio Doce...District, Minas Gerais, Brazil Aricanga mine, Cruzeiro, Brazil Santa Maria mine, Diamamina. Brazil Morro...Lima, Brazil Dom Bosco/Saramenha mine, Ouro Preto, Braz i l Lavra d a U h a , Itinga . Brazil Golconda |  | | Book | | crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto) 22: 183-185 ALTO...Burian goyazite from [Alto Bernardino, Paraiba,] Brazil (by J. S. White, Jr.) 12:379 ALUMOHYDROCALCITE...and muscovite from the Ze Pinto prospect, Minas Gerais, Brazil 21:405-408 --with J.P. Cassedanne: Crystallized...Pitora, Minas Gerais, Brazil 21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil...and platinum from C6rrego Born Sucesso, Minas Gerais, Brazil 23:471-474 AMARGOSA DESERT Hydroboracite |  | | Journal (issue) | | Mulligan Peak (AZ) Purple Agate Collecting Quartz in Brazil Bob Jones’ 2014 Tucson Experience Birthstones...........12 by Bob Farrar A quartz crystal-hunting adventure in Brazil Yellow menace, yellow masterpiece...gemstones, jewelry, geodes, fossils, minerals, quartz crystals, custom jewelry, cabochons, gift items...aluminum borosilicates. The amethyst variety of quartz is just one of the more than 2,000 silicate minerals...three directions. Framework silicates, such as quartz and microcline (feldspar group, potassium aluminum |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Ethiopia, G Page 12: Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California...very old origin, often without lrnown source. e.g. quartz or cinnabar. Current practice most often names...polished mineral surface, expressed in clase. 7 - quartz. 8 - topaz, 9 - corundum, 10 - dia- percentage |  | | Journal (issue) | | Notes Amazonite in Quartz from Bahia, Brazil | Blue Apatite in Jasper from Brazil | Aquamarine Crystal...Crystal with ‘Enhydro’ Inclusion from Brazil | Catapleiite from Mont Saint-Hilaire, Québec, Canada | Chrysocolla...Amazonite in Quartz from Bahia, Brazil Gem-quality amazonite feldspar is well known from Brazil, particularly...Silva Souto (Gems in Gems, Teófilo Otoni, Minas Gerais, Brazil) had some new production of amazonite from...occurring together with transparent to translucent quartz (Figure 1). It was sold in Tucson as ‘Paraíba amazonite’ |  | Zhu, Ze-Ying, Wang, Ru-Cheng, Marignac, Christian, Cuney, Michel, Mercadier, Julien, Che, Xu-Dong, Charles, Nicolas, Lespinasse, Marc (2019) Petrogenesis of Nb–(Ta) aplo-pegmatites and fine-grained granites from the Early Cretaceous Huangshan rare-metal granite suite, northeast Jiangxi Province, southeast China. Lithos, 346. 105150 doi:10.1016/j.lithos.2019.105150 | Journal (article/letter/editorial) | | aplo-pegmatites consist of large microcline and quartz crystals that are typically broken and embedded... 2014) and the abundance chemistry of mica and quartz (Hulsbosch et al., 2014; Legros et al., 2016, 2018;...the Lingshan batholith, a swarm of W–Sn-bearing quartz MA veins is the only surface expression of the...perceptible zoning, and comprise an assemblage of smoky quartz and bluish potassic feldspar, with prominent...highly perthitic microcline (30–35 vol.%; Fig. 5f), quartz (30 vol.%), albite (20 vol.%), and protolithionite |  | | Book | | areas of earthy blue scorodite, arsenopyrite and quartz. After several hours looking around this rather...large open pit working, we settled on a strong quartz vein showing traces of wolfram in the centre of...surface the quartz was fairly easy to break out. Eventually we got down to very hard quartz at around 25...the top gate. We went into the open cut, to the quartz vein which I had worked a year ago with my collecting...Arthur Scoble. We were soon into a rich area of quartz vein showing good blue scorodite with patches of |  | | Book (volume) | | London. Porphyry; Pumice; Pyroxenite; Quartzite; Quartz-Porphyry. J. S. R. James Smith Reid, M.A., LL...Pyrargyrite; Pyrolusite; Pyromorphite; Pyrrhotite; Quartz; Realgar. Lecturer in Greek at Birmingham Norman...up new industries, promoted the development of Brazil and Macao, and expelled the Jesuits. His complete...Napoleon in 1812 and 1814, and then emigrated to Brazil, where he took part in the abortive insurrec¬ tion...millions in Australia, besides a good number in Brazil, the Argentine and South Africa. The return of |
|
Gouveia, Minas Gerais, Brazil