 | | Journal (article/letter/editorial) | | PYROCHLORE-GROUP MINERALS FROM THE LUESHE AND ARAXÁ (BARREIRO) CARBONATITES BY 57Fe MÖSSBAUER SPECTROSCOPY...Lueshe in the Democratic Republic of Congo, and Araxá in Brazil. In contrast to the common assumption that...O2– and 1 OH–, whereas in bariopyrochlore from Araxá, the unusually large value of the quadrupole splitting...Republic of Congo, and the Barreiro carbonatitic complex at Araxá, in Brazil, using 57Fe Mössbauer spectroscopy...bariopyrochlore with BaO up to 19% (Mariano et al. 1997) from Araxá was used for the present investigation. All samples |  | | Report (issue) | | Deposits of the Western Serra do Curral, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Curral, Minas Gerais, Brazil By GEORGE C. SIMMONS GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-G Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | Report (issue) | | REPORT Brazil Investigations (IR)BR-76 NIOBIUM (COLUMBIUM) AND TANTALUM RESOURCES OF BRAZIL U. S. Geological... NIOBIUM (COLUMBIUM) AND TANTALUM RESOURCES OF BRAZIL By Max G. White U.S. Geological Survey CONTENTS...deposits ............................... 10 The Barreiro (Araxa) deposit ..................... 10 The...Distribution of alkalic intrusives in Southern Brazil .. 16 Alkalic intrusions in the western side of...geologic setting of deposits .............. 24 Minas Gerais ...................................... 24 Bahia |  | | Report (issue) | | Horizonte, Ibirite, and Macacos Quadrangles Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation...Quadrangles Minas Gerais, Brazil By JOEL B. POMERENE GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-D Prepared in cooperation with the Departamento...Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation Administration |  | | Report (issue) | | and Ore Deposits of the Alegria District, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J...the Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International...District, Minas Gerais, Brazil By CHARLES H. MAXWELL GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS...GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-J Prepared in cooperation with the Departamento...Departamento National da Producao Mineral of Brazil under the auspices of the Agency for International Development |  | | 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 |  | | Report (issue) | | Development of the Quadrilatero Ferrifero Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...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...GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-A...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International |  | | 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 |  | | Journal (article/letter/editorial) | | Weathered crusts overlying carbonatite complexes in Brazil and one hard rock carbonatite deposit in Canada...currently Mibra Mine, Volta Grande (Brazil), the Pitinga Mine (Brazil) and Marropinno (Mozambique). The...Papp (2009a, 2011a, 2013a) 1200 1000 Australia Brazil Canada 800 Rwanda Mozambique 600 Other World...Russia and India. Production comes primarily from Brazil. Production from Canada and other 500 400 300...and Papp (2009a, 2011b, 2013b) 70000 60000 50000 Brazil 40000 Canada 30000 Other World Total 20000 |  | | Journal (article/letter/editorial) | | tropicaland•equatorialcountriessuch as Australia,BelgianCongo,Brazil, India, and Nigeria, whereweatheringis rapid and...manganese-iron ores from Lueshe (Belgian Congo), Barreiro (Brazil), Kaiserstuhl(Germany) and from a new depositin...grabenareas,in the Mesozoicprovinceof Southeast Brazil, and in manyothercountriesof the world. The grabenareaandits...pyrometasomaticore de- positsin limestone(for instance,Barreiro, Brazil). These ore bodiesbecomethen enrichedin s... Alluvial concentratesfrom the Lueshe and the Barreiro depositswere analyzedby X-ray fluorescence and |  | | Report (issue) | | and Ore Deposits of the Itabira District Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL Prepared...and Ore Deposits of the Itabira District Minas Gerais, Brazil By JOHN VAN N. DORR 20 and ALUIZIO LICINIO...GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-C...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the International Cooperation..._____ Thickness and contacts..________________ Minas series ________________________________ Cara§a group |  | | Journal (article/letter/editorial) | | Otoni, Minas Gerais, Brazil, and 2 Departamento de Quı́mica, ICEx, Universidade Federal de Minas Gerais...Gerais, 31270-901 Belo Horizonte, Minas Gerais, Brazil (Received 22 January 2012; revised 23 April 2012;...and contaminant decomposition in aqueous media. Barreiro et al. (2007) studied the oxidation of atrazine...(2009) studied the possibility of using natural ‘‘limonite’’ as a low-cost catalyst in a Fenton-like system...Applied Catalysis B: Environmental, 66, 258 264. Barreiro J.C., Capelato M.D., Martin-Neto L.& Hansen H |  | | Journal (article/letter/editorial) | | THE DIAMOND-B[SARING MINAS REGION OF NORTHERN GERAES, BRAZIL. LUCIANO J. MORAES AND DJALMA GUIMAR_•ES...diamond-bearing regionin the northernpart of the Stateof Minas Geraesstretchesfrom the head-watersof the Jequitinhonha...northeasternflanks of Serra do Cabral, such as Burity Grande,Barreiro, Jequitahy,and othersoccurin the valleyof the...situatedthe principal mineral depositsof economicvalue to Brazil, such as iron, man- ganese,gold, and diamonds...meters. 502 DIAMOND-BEARING REGION 44ø OF BRAZIL. 5o3 43" MAP OF THE DIAMONDRE510NOF NORTHERN |  | | Report (issue) | | Monlevade and Rio Piracicaba Quadrangles, Minas Gerais Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 341-E...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...Quadrangles, Minas Gerais Brazil By ROBERT G. REEVES GEOLOGY AND MINERAL RESOURCES OF PARTS OF MINAS GERAIS, BRAZIL...the Departamento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...____________ Itabirite. - _______________________ Minas Series_-_--_____--_______--___-__-_ Caraga Grou |  | | Report (issue) | | minerals include clays, iron oxides (hematite, limonite, or magnetite), quartz, and pyrite or other sulfide...Zhayrem (Gauert, 2001). 80° Neuquen-Mendoza Araxá Camamu 0° Jameson Land basin Jbel Irhoud 45°...recovered. The Araxá deposit, which lies within the alkalineultramafic Barreiro complex in Minas Gerais, Brazil...Pass and both rare-earth elements and niobium for Araxá and Mau Xe. Thus, any barite production from them...mineralization (Solomon and others, 1969). At Araxá, Brazil, the defined ore reserve is a weathered regolith |  | | Journal (issue) | | mining-themed park was approved in 2000, and the Minas de Almadén y Arrayanes The Mineralogical Record...of the mines has been the responsibility of the Minas de Almadén y Arrayanes (MAYASA), a State-owned company...was at that time Governor of the Almadén mines (Barreiro, 1992). From 1776 to 1784, King Carlos III commissioned...others, several specimens of cinnabar from Almadén (Barreiro, 1992). In 1791, the Assistant Director of the...de otros. En Madrid. En la Imprenta del Reyno. BARREIRO, A. J. (1992) El Museo Nacional de Ciencias Naturales |  | | 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) | | Wyoming Foreign deposits Algeria Angola Australia Brazil Canada China Colombia Egypt Finland India 1 2...Israel 8 10 2 , Algeria. Angola. Australia, Brazil. Canada. China. Colombia. Egypt Finland India ...SERICI TE K AOL IN IT MONTMORILLONITE DOLOMITE LIMONITE ORTHCCLASE CHALCEDONY PYRITE IS ORE ENCLOSES...2 A TI NEARORE : . = . FCR t: C 1 T E LIMONITE F E L : ? - ; GYFSL' FLUC F I TE ZIRC: TOUR...NAME APAT ITE QUARTZ ILLITE DOLOMI TE CALC ITE LIMONITE FELDSPAR GYPSUM FLUORI TE ZIRCON TOUR MALI NE |  | | Report (issue) | | Paulista phosphate deposit in Pernambuco State, Brazil, in Notholt, A.J.G., Sheldon, R.P., and Davidson...adjacente incluindo depósitos 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 |  | | Journal (article/letter/editorial) | | the Pau Branco Deposit, Quadrilátero Ferrífero, Brazil— Implications for Fluid-Rock Interaction During...70910-900, Brazil de Geociências, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais 31270-901...31270-901, Brazil for Exploration Targeting, School of Earth Sciences, University of Western Australia,...Branco iron ore deposit, Quadrilátero Ferrífero, Brazil. The phyllite and iron ore of Pau Branco extend...Supergroup thrust fault Itacolomi Group syncline Minas Supergroup (dark grey=itabirite) Rio das Velhas |  | | Journal (article/letter/editorial) | | magmaticprocesses in the Andes since McNutt et al. (1979), Barreiro and Clark (1984), and Harmon et al. (1984) presentedPb...Hydrothermal processes havebeen studiedby Tilton and Barreiro (1980), Tilton (1979), and Tilton et al. (1981)...was like that for the Arequipa massif.However, Barreiro and Clark (1984) tismare knownin the high Andesof...et al. (1968) is usedin order 34 ø and 42 ø S. Barreiro and Stern (1982) and Stern to standardizePb ratios...Enar = enargite,Ga = galena,Hem = hematite, Lim = limonite, OxCu = copperoxide, Py = pyrite, Qz = quartz |  | | Book (edition) | | International Symposium on Carbonatites in Pocos de Caldas, Brazil for which this writer was keynote speaker. The... Pakistan, Quebec, Finland, Guyana, Venezuela, Brazil, Paraguay, Angola and South-West Africa, i.a. Carbonatites...Quebec and Araxa, Brazil) and important sources of P, Ti, Cu and CaCO; (Jacupiranga, Brazil). In addition...Carbonatites of the World United States Canada Brazil Greenland, Europe, and the U.S.S.R. Africa India...Algoma-Sudbury districts of Ontario (Parsons, 1961). For Brazil few detailed reports are available, but summaries |  | | 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 (article/letter/editorial) | | Paleoproterozoic crust of the São Francisco Craton, Bahia, Brazil: geodynamic features J.S.F. Barbosa a,∗ , P. Sabaté...Bahia, Brazil b IRD—Representation in Brazil CP7091, Lago Sul, 71619-970 Brasilia, DF, Brazil Received...Geocronological; Geotectonic models; Mineral deposits; Bahia; Brazil 1. Introduction The essential features of the...manganese and iron minerals (pyrolusite, psilomelane, limonite, goethite, hematite). The Cruz das Almas Formation...Petrogenética. In: Congr. Bras. Geol. 37, São Paulo, Brazil Ext. Abstr. SBG.1 pp. 449–450. Alibert, C., Barbosa |  | | 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 |
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