 | | 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 (issue) | | gem abstracts| Margaritologia pearl newsletter|Santa Fe Symposium proceedings|Fei cui testing in Hong...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,...margaritologia.de. Santa Fe Symposium Proceedings Papers from 22 presentations delivered at the 2017 Santa Fe Symposium...(Figure 4b), spessartine (Figure 4c), almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...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...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | | Journal (issue) | | . • • • • • • • • • • I 5.00 Rutilated Quarts, Brazil. 3 x 2 ½ x I . Polished curved face. Plus tax •...• • 7.50 Heulandite, Iceland. Xld. on drusy Quartz. 3 x 2 1/2 x 1 ½ . • . . • • • • • . • • 2.00 Cacoxenite...¾ x t ½. . . . . t.50 Colu1ite, Butte. Mass on Quartz. 1 ¾ x 1 ½ . . . . . . . . . . . • . . • . • ..... . . . . . . . 2.00 Artentite, Butte. Xld. on Quartz w . Pyrite. 2 x 2. . . . . . . . . . • • • • ....3.00 Tetrahedrite, Bolivia. Xld. and massive on Quartz. 4 x 2 ½ x 2. • . • • • . 4.00 Niccolite, Ontario |  | | Book | | natural, cultured and imitation Alexander E. Fam Quartz Michael O'Donoghue In preparation Amber H. Fraquet...Darragh Topaz D. B. Hoover Butterworths Gem Books Quartz Michael O'Donoghue Butterworths London Boston...O'Donoghue, Michael Quanz.-(Butterworths gem books) I. Quartz I. Title 553.8'7 QE391.Q2 ISBN 0-408-01462-8 Library...O'Donoghue, Michael Quartz (Bunerworths gem books) Bibliography: p. Includes indexes. 1. Quartz. I. Title. II... Preface Even without its gemstone application, quartz is a formidable mineral to survey in a book of |  | | Journal (issue) | | deposits of alexandrite, cat's-eye and chrysoberyl in Brazil' pp. 333-54) ISSN: 0022-1252 F.G.A. your key...Institute of America Gem Trade Laboratory, Inc., Santa Monica, California, USA Abstract A method for obtaining...apatite in spinel and corundum, and biotite in quartz. Conclusion Although the inclusion in spinel focused...deposits of alexandrite, cat's-eye and chrysoberyl in Brazil JacquesCassedanne, Cassedanne, D.Sc.,* Maurice...Fundiio, Fundão, 21,910, Rio de Janeiro, Janeiro, Brazil *Institute of Geosciences UFRJ-CNPq, Cidade Universitaria |  | | Report (issue) | | Deposits of the Western Serra do Curral, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...half of the Brumadinho quadrangles, Minas Gerais, Brazil. 2. Geologic map of the south half of the Igarap£ |  | | 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 |  | | Report (volume) | | Minas Gerais Brazil GEOLOGICAL SURVEY BULLETIN 964-C Mica Deposits in Minas Gerais Brazil By W. T....M. BARBOSA and RESK FRAYHA, DIVISSO DE FOMENTO, BRAZIL GEOLOGIC INVESTIGATIONS IN THE AMERICAN REPUBLICS...da Produgao Mineral, Ministerio da Agricultura, Brazil, under the auspices of the Interdepartmental Committee...__________-___---_____---_-________ Exports of sheet mica from Brazil, 1900-1945-___-__-_______----______ General statement...Central zone._____________________________________ Quartz-core lenses_________________________________ Asymmetrical |  | | Report (issue) | | Development of the Quadrilatero Ferrifero Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Development of the Quadrilatero Ferrifero Minas Gerais, Brazil By JOHN VAN N. DORR 2d REGIONAL GEOLOGY OF THE...THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | | Book | | 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia *...cm Page 251: Calcite, Irai, Rio Grande do Sul, Brazil * 12.5 x 10 x 10.5 cm Page 252: Gypsum rosette...Earth’s crust are composed of just a few minerals; quartz and the feldspar group are the most abundant species...growth, as exemplified by tourmaline in schist, quartz or phlogopite. Space for Growth Cavities in rocks...about the same time, as happens with pyrite and quartz, or they may have grown one after the other, as | | | Book | | 120) Page 6: Mimetite (see page 139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia *...cm Page 251: Calcite, Irai, Rio Grande do Sul, Brazil * 12.5 x 10 x 10.5 em Page 252: Gypsum rosette...Earth’s crust are composed ofjust a few minerals; quartz and the feldspar group are the most abundant processes...growth, as exemplified by tourmaline in schist, quartz or phlogopite. Space for Growth Cavities in rocks...about the same time, as happens with pyrite and quartz, or they may have grown one after the other, as |  | | Journal (issue) | | MARKETS Figure 9. Near Nova Era in Minas Gerais, Brazil, the Belmont mine operates using sophisticated...other mines in the area slowed (Weldon, 2006). Brazil witnessed a sustained slump in overall gemstone...in places like the United Arab Emirates, Russia, Brazil, India, and China—locations that would not have...discovered in Paraíba and Rio Grande do Norte states in Brazil in 1989 (Fritsch et al., 1990) and became known...plummeted, mining operations in key centers such as Brazil and Zambia curtailed or ceased production, though |  | | Journal (issue) | | 1aquamarine, Santa Maria mine, Brazil; (2) 20.10-ct peridot, Burma; (3) 21.09-ct kunzite, Brazil; (4) 8.14-ct... 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...Sinlzanlzas Editor Alice S. Keller 1660 Stewart St. Santa Monica, C A 90404 Telephone: (800) 421-7250 x25...organization for the jewelry industry, 1660 Stewart St., Santa Monica, CA 90404. Postmaster: Return undeliverable |  | | Report (issue) | | Ibirite, and Macacos Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Gerais, Brazil By JOEL B. POMERENE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...quartz_________________________________-_-_--__-__----_-_-_-_---Quartz crystal containing carbonate rhombohedrons_--- |  | | Report (issue) | | of the Pico de Itabirito District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Gerais, Brazil By ROBERTS M. WALLACE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL...the Departamento Nacional da Producao Mineral of Brazil under the au-spices of the Agency for International...of Ba$ao granites to Minas SeriesDike rocks and quartz veins____________________ Granodiorite dikes and |  | | Book | | Deviations 371 Bolivia, 377 332 Proportions Brazil, 378 Angles of Faceted Bulgaria, 399 333 Burma... Cajon, Schmetzer, Heidelberg, De Janeiro, Brazil; Geological ton, VA; seum, Marie and Germany;...Germany; NY; Prof. Sklar, Oceanside, Rio Santa Monica, Liddicoat, Dr. Dr. Josephine A. Van Pelt... But if antiquities, so an and scriptions quartz] “it of a to seems only two that be For...pearl, zircon, coral, soberyl, garnet, carnelian, quartz, and 10 as The shown gems on a emerald |  | | Report (issue) | | Structural geology Detachment faults in the central Santa Monica Mountains, Calif., by R. H. Campbell, R....investigation of the Caraiba copper deposit, Bahia, Brazil, by R. W. Lewis, Jr _ _ _ _ _ _ _ _ _ _ _ _ _ _...RESEARCH 1966 DETACHMENT FAULTS IN THE CENTRAL SANTA MONICA MOUNTAINS, CALIFORNIA By R. H. CAMPBELL...Los AngeZes County, OaZif. Abstraot.-The central Santa Monica Mountains are made up of sedimentary and...of the Rort exposed in the core of the Eastern Santa Monica Mountains. Structurally, these strata form |  | | Journal (volume) | | characterization of different polycrystalline materials (i.e., quartz, SiC and α-Al2O3). The crystal sizes determined...their uniform parental material, mainly composed of quartz from seasediment formations (Tables 2 & 3). Table...gas feedstock) were investigated in a fixed-bed quartz micro-reactor. The results indicate that when Ni(NO3)2...Siliceous sedimentary rocks are composed by silica (quartz and opal-CT), aluminium silicates (clay minerals...degree of correlation (R2=0.92), such as for pare of quartz reflection with d=3.34 and 1.82 Å. The similar |
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