 | | Report (issue) | | Resources of the Pico de Itabirito District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...District Minas Gerais, Brazil By ROBERTS M. WALLACE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-F Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the au-spices of the Agency for International Development |  | Melgarejo, Joan C., Costanzo, Alessandra, Bambi, Aurora C.J.M., Gonçalves, Antonio O., Neto, AndrĂ©s B. (2012) Subsolidus processes as a key factor on the distribution of Nb species in plutonic carbonatites: The Tchivira case, Angola. Lithos, 152. 187-201 doi:10.1016/j.lithos.2012.06.024 | Journal (article/letter/editorial) | | economic point of view: the Seis Lagos deposit in Brazil, the largest Nb deposit in the world, has reserves...almost monomineralic K-feldspar (Kfs) altered to gibbsite (Gbs) and replaced by ïŹuorite (Fl). b) Fine-grained...Fluorite crystals are mantled by hollandite (Hol), gibbsite (Gbs) and rhabdophane-(La) (Rbd). e) Aggregate...(Fig. 5a); K-feldspar remnants can be replaced by gibbsite [Al(OH)3]. Fluorite is also produced after ankerite...[BaMn2+Mn4+7O16], 16], coronadite, gorceixite and gibbsite [Al(OH)3]. Nb-rich goethite may develop ïŹne blades |  | | Report (issue) | | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International...Ferrifero, Minas Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL Prepared in cooperation with the Departmento Nacional da Produqao...Produqao Mineral of Brazil under the auspices of the Agency for International Development of the United...Ferrifero, Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological |  | | Book | | BARTORELLI ::âą . . .. 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) | | Paulista phosphate deposit in Pernambuco State, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...adjacente incluindo depĂłsitos minerais: Brasilia, Brazil, Departamento Nacional da Producao Mineral, p....1989a, The Jacupiranga apatite deposit, Sao Paulo, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...1989b, The Ipanema phosphate deposit, Sao Paulo, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...of Catalao I ultramafic alkaline complex, Goias, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson |  | | 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 |  | Knies, Jochen, Mattingsdal, Rune, Fabian, Karl, GrĂžsfjeld, Kari, Baranwal, Soma, Husum, Katrine, De Schepper, Stijn, Vogt, Christoph, Andersen, Nils, Matthiessen, Jens, Andreassen, Karin, Jokat, Wilfried, Nam, Seung-Il, Gaina, Carmen (2014) Effect of early Pliocene uplift on late Pliocene cooling in the ArcticâAtlantic gateway. Earth and Planetary Science Letters, 387. 132-144 doi:10.1016/j.epsl.2013.11.007 | Journal (article/letter/editorial) | | smectite/illite ratio and relative amounts of gibbsite (Holmes, 1998; Wahsner et al., 1999). Shipboard...proportions of coarse sands and abrupt appearance of gibbsite during the same time period (Fig. 9) are also...The abrupt appearance of gibbsite â expressed by the gibbsite/corundum (Gibbsite/Std) ratio in the <2 ÎŒm... McCarthy, M., Ravelo, A.C., deMenocal, P.B., Barreiro, M., Pacanowski, R.C., Philander, S.G., 2006. |  | | Book | | Analitico da Barita by MinistĂ©rio das Minas e Energia in Brazil; and the numerous commodity profiles and...Considerations damage, Soviet Union Canada Chrysotile Brazil Zimbabwe Chrysotile South Africa Amosite Crocidolite...and gem materials in the past. Brazil Production of asbestos in Brazil, which has reached about 200,000...USA (a) Turkey India West Germany Morocco Italy Brazil (b) Iran (c,e) United Kingdom Romania (e) Irish...aluminous minerals, in particular the trihydrate gibbsite, Al(OH), and the monohydrates diaspore, and boehmite |  | | Journal (article/letter/editorial) | | 13-15 Gedrite Germanite GersdorfïŹte Geversite Gibbsite Gillulyite Glauconite Glaucophane Gmelinite-(Na)...the minerals kaolinite, goethite, hematite and gibbsite. Latite is an extrusive rock, with a mineral assemblage...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named...conglomerate-hosted U deposits of the Randtype at Jacobina, Brazil (pers. com. P. Laznicka). Chromium-bearing garnet...Canada, Dore Lake, Australia, Campo Formoso, Bahia-Brazil) (Barnes and Francis, 1995; Leinonen, 1998; Kojonen | | | Journal (article/letter/editorial) | | 13-15 Gedrite Germanite GersdorfïŹte Geversite Gibbsite Gillulyite Glauconite Glaucophane Gmelinite-(Na)...the minerals kaolinite, goethite, hematite and gibbsite. Latite is an extrusive rock, with a mineral assemblage...gold-bearing quartz veins in the southern Para State, Brazil (Angelica et al., 1997). Chromium muscovite named...conglomerate-hosted U deposits of the Randtype at Jacobina, Brazil (pers. com. P. Laznicka). Chromium-bearing garnet...Canada, Dore Lake, Australia, Campo Formoso, Bahia-Brazil) (Barnes and Francis, 1995; Leinonen, 1998; Kojonen |  | | Book (volume) | | Universidad de Oviedo, Oviedo, Spain J. GĂłmez Barreiro Departamento de GeologĂa, Universidad de Salamanca... Dias da Silva, E. GonzĂĄlez-Clavijo, J. GĂłmez Barreiro, and A. LĂłpez-Carmona 2.1 Introduction . . . ...GonzĂĄlez-Clavijo, A. DĂez-Montes, and J. GĂłmez-Barreiro 3.1 Introduction . . . . . . . . . . . . . . ... . . . . . . J. R. MartĂnez CatalĂĄn, J. GĂłmez Barreiro, Ă. Dias da Silva, M. Chichorro, A. LĂłpez-Carmona.... . . . . A. Azor, Ă. Dias da Silva, J. GĂłmez Barreiro, E. GonzĂĄlez-Clavijo, J. R. MartĂnez CatalĂĄn, |  | | Report (issue) | | rare-earth elements, and antimony in China; niobium in Brazil; and platinum-group elements in South Africa and...chart showing niobium resources and reserves in Brazil, Canada, and the United States...................industrialization in large developing countries, such as Brazil, China, and India. In addition, the development...cobalt (Democratic Republic of the Congo), niobium (Brazil), and platinum (South Africa), are also considered...Zhayrem (Gauert, 2001). 80° Neuquen-Mendoza AraxĂĄ Camamu 0° Jameson Land basin Jbel Irhoud 45° |  | | Journal (volume) | | Deposits in the CarajĂĄs Mineral Province, ParĂĄ State, Brazil Rosaline Figueiredo e Silva, Lydia Maria Lobato...educated Dutch geologist and permanent resident of Brazil with an M.Sc. degree in metamorphic geology, under...in the Espinhaço Range and has worked widely in Brazil and shield South America, mainly on exploration...geologic, mineral resources, and geotectonic map of Brazil, published in 4 sheets and in DVDGIS format with...degree in geology from the Federal University of Minas Gerais in 2002, with project focus on the Engenho DÂŽĂgua |  | | Journal (article/letter/editorial) | | kaolinite-halloysite or to beidellite-nontronite; then, gibbsite and bauxite formed from these clay minerals by...feldspar gives free aluminum hydroxide", "that gibbsite precedes kaolin in the weathering of all but the... 1172 ABSTRACTS (Carboniferous) of Southern Brazil. It was traced across the diamond region of Goias...diamantiferous glacial horizons in Minas Gerais and Bahia with those in the rest of Brazil. The facieologic unity...classification. DEVONIAN SYSTEM IN GOIAS AND MATO GROSSO, BRAZIL KENNETH E. CASTER Universities of Cincinnati and |  | | Book | | . . . . . . . . . . . . . . . . . . . . . . . Brazil . . . . . . . . . . . . . . . . . . . . . . . ......... . ..... . ........ . ................ . Brazil ...... . .... .... ............... .. ....... ...southern Norway; northern Karelia, U.S.S.R.; Brazil, in Minas Gerais at Brejauba and Engenho Central, in Paraiba...Finland, and Alto do Giz, Rio Grande do Norte, Brazil), on tantalite (Main Tantalite Dike, Strelley,...related type of occurrence is at Barreiro, Araxa, Nlinas Gerais, Brazil, in a calcite vein cutting an alkalic |  | | Journal (issue) | | pegmatite district (eastern pegmatite province, Minas GĂ©rais, Brazil). I. GATTER, C. PREINFALK AND G. MORTEANI...differentiated and zoned LCT-type pegmatites of Urubu, Barreiro, Maxixe and Morro Redondo, are either type-A,...(moonstone) with chrome diopside inclusions and a gibbsite bead dyed to imitate nephrite. R.A.H. Mostre...Afghanistan and fine blue apatite crystals from Minas GĂ©rais, Brazil. M.O'D. Les nouvelles mines de La Pita...associated with transparent blue apatite from Paraiba, Brazil. M.O'D. BastnĂ€sit aus Pakistan-ein n e u e r S |  | | Report (issue) | | Simpson and Bowles. Brazil: T. Uranium in Precambrian Moeda Formation, Minas Gerais, Brazil, by Jose Nilson...also to be made by others in the United States, Brazil, the United Kingdom, Ger many, and Australia....well-known uraniferous gold deposits of South Africa, Brazil, and southern Canada), in strata older, but not...American friends for your hospitality. Thank you. BRAZIL OPENING REMARKS Moura: Ladies and gentlemen:...glomerates of the Precambrian Moeda Formation in Minas Gerais State. I'm going to try to do my best in spite |  | | Book | | recovered from regoliths in Japan (Chapter 23). Gibbsite nodules may form in lateritic profiles over "granites"...deposits (e.g. Cons. Lafaiete and Serra do Navio, Brazil; Section 23.3.5. and Fig. 23-10), are rare. One...in the Santa Catarina crystalline complex, S.E. Brazil (Morro da Fumaca) and elsewhere. Of the minor metallic...provinces (the Brito-Arctic Province, Atlantic coast of Brazil). Small plateau-basalt provinces are frequently...Paleocene to Eocene alkali basalts. The major gibbsite and minor boehmite bauxites range from a hard |  | | Book | | recovered from regoliths in Japan (Chapter 23). Gibbsite nodules may form in lateritic profiles over "granites"...deposits (e.g. Cons. Lafaiete and Serra do Navio, Brazil; Section 23.3.5. and Fig. 23-10), are rare. One...in the Santa Catarina crystalline complex, S.E. Brazil (Morro da Fumaca) and elsewhere. Of the minor metallic...plateau-basalt provinces are Atlantic coast of Brazil). frequently linear and often discontinuous. They...Paleocene to Eocene alkali basalts. The major gibbsite and minor boehmite bauxites range from a hard |  | | Journal (issue) | | Mangrove, S. Australia (30-80) (142-190) (85-112) Brazil. Mn . Average Shale 45.0 95.0 20.00 . Average...(6): 1495-1503 Cases and solutions REAL C, BARREIRO R, CARBALLEIRA A (1993) Heavy metal mix- ing...bassanite, clay unidentified phyllosilicate, gibb gibbsite) Nature of samples and minerals identified by... Formula yFeOOH quartz SiO, rutile TiO, gibbsite Mine drainage minerals not found in this study...pigments had approximately 10% Al,O, bound in gibbsite or kaolinite. However, no Al-bearing phases were |  | Kogel, Jessica Elzea, Trivedi, Nikhil C., Barker, James M., Krukowski, Stanley T. - Eds. (2006) Industrial Minerals and Rocks (7th ed.) Society for Mining, Metallurgy, and Exploration, Inc., Littleton, CO. | Book (edition) | | spinel, and chromite âą Hydroxides such as brucite, gibbsite, go ethite, and limonite; and manganite and psilomelane...concentrat ed in southern Africa, the Siberian Platform, Brazil, and Western Australia. Ages range from Precambrian...associated with pegmatites in locations such as Brazil, the former U.S.S.R., and western Canada, pro duction...Venezuela, Guyana, Surinam, Guiana, and parts of Brazil and Colombia) âą Northern Brazilian Shield Province...coming from Australia, Guinea, Jamaica, China, and Brazil. Nonmetallurgical grades used for refractories |  | | Journal (volume) | | Myanmar Emeralds from the Piteiras mine, Minas Gerais State, Brazil: genetic implications from fluid inclusion...Piteiras mine in Itabira is located in the Minas Gerais State, Brazil and produces gem quality emeralds. Ultramafic...property. âGem-qualityâ alexandrite specimens from Brazil, India, Madagascar, Russia, Sri Lanka, and Tanzania...sources. Alexandrite samples from the Hematita mines (Brazil) have typically high Sn (up to 2294 ppm) concentrations...showing LA-ICP-MS data [ppm] for alexandrites from Brazil (BZ), Madagascar (MAD), Russia, Sri Lanka, and |  | | Report (issue) | | Liberia, Sierra Leone, South-West Africa, Tanzania, Brazil, Guyana, India, Indonesia, and Venezuela. Diamond...for metal. The principal minerals in bauxite are gibbsite, AI (OH) a; boehmite, AlO (OH); and diaspore,...deposits in the United States are composed chiefly of gibbsite; the principal impurity is kaolinite, (OH) sSi4Al40...the leading source of our imports, is chiefly gibbsite but also contains some boehmite. Most deposits...saprolite to contain 25-36 percent alumina, partly in gibbsite but much in very fine grained aluminum silicate |  | | Book | | of about 2000), with production being moved to Brazil. The remainder of southern and central England...material. which appears to be a mix of allophane. gibbsite, scarbroite and quartz (Alabaster 1989a . A.lteration...found in the pipes include basaluminite, bayerite, gibbsite and nordstrandite. All appear to have formed by...in limestone. It is associated with allopba111:,gibbsite and 1.1nunidentified carbonate, and it appears...aluminium minerals including allophane. basaluminite. gibbsite. para-alumohydrocalcite and scarbroite have de |  | Stevens, John G., Khasanov, Airat M., Miller, J. W., Pollak, Herman, Li, Zhe - Eds. (2002) Mössbauer Mineral Handbook (2nd ed.) Mössbauer Effect Data Center, Asheville, NC. | Book (edition) | | Pelitic Rock from the Bambui Group, State of Minas Gerais, Brazil (In German) (Chem.Abstr.119(8):76632d) A...M.C.Boiron, M.Cathelineau, and F.E.Wagner, in "Brazil Gold '91:The Economics, Geology, Geochemistry and...Microcrystalline Goethite and Humic Acid in Some Oxisols from Brazil J.Friedl, F.E.Wagner, J.A.Sawicki, D.C.Harris,...brown latosols from the Rio Grande Do Sul state, Brazil. (In Portuguese) (Chem.Abstr.123:318854) P.Kong...phlogopite from the Tapira carbonatite complex, Brazil. A.Benisek, E.Dachs*, G.J.Redhammer, G.Tippelt |
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