 | | Journal (article/letter/editorial) | | e r a l i z a t i o n in Central E a s t e r n Brazil: a review A. Bernasconi Terraconsult AG, Steinwiesstrasse24...the major Archaean terranes of central eastern Brazil is given in the first section of this paper. Integration...Jequie and Goias mobile belts of central eastern Brazil. This mineralization associated with greenstone...important Archaean gold districts of Brazil, the Iron Quadrangle of Minas Gerais (Fig. 1), was discovered. Recently...the Archaean gold metallogeny of central eastern Brazil based on the presently known major raineralized |  | | Catalog/List | | £25 Tonca de Onca Mine, Virgem de Lapa Minas Gerais Brazil This is the end member of the Polylithionite-...pink Hureaulite 7x7 mmCigana Mine, Galileia Minas Gerais £36 4 BRUCITE clear silvery cleavages about...Ilimaussaq Greenland Sapucai Mine, Galileia Minas Gerais about 8.5mm Seinajoki Laani Finland £20 ½...standing. Overall size 1x2 inches Diamantina, Minas Gerais £40 19. 20 MAGI:ffiMITE pale brown tiny ~rystals... quite pleasing combination . Brumado, Bahia , Brazil about 2x2 inches £40 34 MIMETITE rich coating of |  | | Catalog/List | | -----------·28 ■ ANATASE Cuiba di strict, Gouveia Minas Gerais. Brazil Single light bro,,11 lustrous ,double-terminated...Norway Hard black 2mm fragments with and on white calcite and limestone matrix Single black-brown crystal...730 ■■ PHENAKITE Sao Miguel de Piracicaba,Minas Gerais, Brazil Single clear to translucent crystal about...909 ■■ HUREAULITE Jocao Mine, Galilcia, Minas Gerais Brazil 992 PLUMBOGUMMITE Dry Ghyll, Caldbcck Fells...Rich coverage of small dark green crystals on calcite greyish blue I cm vein section with gocthite ½"£6 |  | | Catalog/List | | Lleyn, Wales Dark brown veinlets throughtout calcite/ quartz matrix. Very rare for GB ½" £5 Ix) £15...3x4_£_10_ _ __ _ 337 ■■ BENYACARITE Folgosinho, Gouveia,Portugal Yellow micro crystals on orange Zwieselite...Skrikerum Norrkoping Sweden Black colouration in white calcite, fairly sparse. Ix½ £7 CuSe 73 ■ BRAUNITE Praboma...·------- --- - --- - ---- - ---- --- ---- 101 CALCITE Near Bristol (location details with label) Creamy...£2 2x2£4·- ·- ·- .. . -2x4 £8 FLUORESCEN1 1125 CALCITE no location Translucent honey coloured rhomb. Has |  | | Book | | rutilated topaz, which was first marketed from Brazil and t are virtually opaque. Colorless synthetic...example of rutilated quartz crystals from Minas Gerais, Brazil. Specimen is about I I cm tall. RJL2477...5. Freeform cabochons of rutilated quartz from Brazil, totaling about I00 carats. One can see that the...Borborema pegmatitic province in Rio Grande do Norte, Brazil (Beurten et al 2004). Figure 17. Typical striated...oriented rutile on hematite from near lbitiara, Bahia, Brazil, are also examples of cleft-type deposits. Figure |  | | 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 |  | de Oliveira Cordeiro, Pedro Filipe, Brod, José Affonso, Santos, Roberto Ventura, Dantas, Elton Luiz, de Oliveira, Claudinei Gouveia, Barbosa, Elisa Soares Rocha (2011) Stable (C, O) and radiogenic (Sr, Nd) isotopes of carbonates as indicators of magmatic and post-magmatic processes of phoscorite-series rocks and carbonatites from Catalão I, central Brazil. Contributions to Mineralogy and Petrology, 161 (3) 451-464 doi:10.1007/s00410-010-0542-y | Journal (article/letter/editorial) | | rocks and carbonatites from Catalão I, central Brazil Pedro Filipe de Oliveira Cordeiro • José Affonso...Ventura Santos • Elton Luiz Dantas • Claudinei Gouveia de Oliveira • Elisa Soares Rocha Barbosa Received:...Geosciences, University of Brası́lia, Brası́lia, Brazil e-mail: pfocordeiro@yahoo.com.br events, which...Alto Paranaı́ba Igneous Province (APIP), central Brazil. They are abundant in the Catalão and Araxá complexes...(APIP) is located in Goiás and Minas Gerais states, central Brazil (Gibson et al. 1995). It occupies |  | Cordeiro, Pedro Filipe de Oliveira, Brod, José Affonso, Palmieri, Matheus, de Oliveira, Claudinei Gouveia, Barbosa, Elisa Soares Rocha, Santos, Roberto Ventura, Gaspar, José Carlos, Assis, Luis Carlos (2011) The Catalão I niobium deposit, central Brazil: Resources, geology and pyrochlore chemistry. Ore Geology Reviews, 41 (1) 112-121 doi:10.1016/j.oregeorev.2011.06.013 | Journal (article/letter/editorial) | | o r ev The Catalão I niobium deposit, central Brazil: Resources, geology and pyrochlore chemistry Pedro...Affonso Brod a, b, Matheus Palmieri a, c, Claudinei Gouveia de Oliveira a, Elisa Soares Rocha Barbosa a, b...Instituto de Geociências, Brasília-DF, 70910-900 Brazil Universidade Federal de Goiás, Campus Samambaia...Federal de Goiás, Goiânia-GO, 74001-970 Brazil Anglo American Brazil LTDA, Avenida Interlândia 502, Setor...Setor Santa Genoveva, Goiânia-GO, 74672-360 Brazil a r t i c l e i n f o Article history: Received 24 |  | | Journal (article/letter/editorial) | | brackets: New Consort, South Africa [1–9]: Cuiabá Brazil [10–13]: Ajjanahalli, India [14,15]; Renco, Zimbabwe...three in India, two in Russia, one in Ethiopia, Brazil and Indonesia. The geographic diversity also points...garnet, diopside, hornblende, K-feldspar, quartz, calcite, biotite 2nd stage: hornblende, plagioclase, K-feldspar...actinolite, tourmaline, calcite 2nd stage: muscovite, epidote, chlorite, quartz, calcite Pilgrims’s Rest ...Dembi actinolite, biotite chlorite, epidote, calcite, sericite, kyanite Navachab 1st stage: garnet |  | | Journal (issue) | | May 2001 The Mineral Collector's Newsle Karst Calcite Deposits in Fossil Back Reef and Aeolian Dune Environments...as occurring in the Halls Gap geodes: anatase, calcite, cerussite, chalcocite, galena, halotrichite, honessite...really dry for long in Hawai' i .. . Aragonite and calcite, stable carbonate minerals on a mineral display...Ca2+ and co/- so lu tions. Pockets and veins o f calcite crystals also forme. through similar processes...USGS quadrant tor NE Oahu, showing Laie and the calcite quarry. The quarry is in a topographic cul-de sac |  | | Journal (article/letter/editorial) | | plagioclase in the greisenized Rio Branco granite, Brazil (Dos Santos et al., 2013); (L) Argillized granite...15.50 19 83-m 17.50 20 61-m 16.08–20.54 Gouveia, Portugal Pegmatite (stockscheider) from the Podlesí...topaz) 1 1-n 15.48 na Ouro Preto area, Minas Gerais, Brazil lP 1 and 2 kbar ~370 of Little Three...region, Brazil Potosi tin deposit, Rondônia, northwestern 3 3-n 13.2 Yokoi et al. (1987) Brazil 23... 8 8-n Colorado, USA (MHT* and MT** groups) Calcite veins from Ghundao Hill, Pakistan 9 9-n ro |  | | Catalog/List | | Dingwall Scotland ANATASE Cuiba district, Gouveia Minas Gerais. Brazil 28 Quite rich black mass, mostly as...Obira Mine, Oita Prefecture.Japan APATITE Minas Gcrais Brazil 768 54 Brown mass, with one or two crystals...19 Black micro crystals in vughs w ith possible Calcite crystals two or three micro crystals on small quartz...some cleavages Dark brown vein lets throughout calcite/ quartz matrix. Very rare for GB complex silic...and on matrix Small creamy bladed cryslals on calcite. Location interest CaP 0/ 4C0 / 3F 2 x 2 £ 10 l |  | | Journal (issue) | | . . .247 COVER: EUCLASE crystal, 2.6 cm, on calcite, from the El Oriente tunnel, Chivor mine, Boyaca...associated with white, acicular mesolite. Stilbite and calcite crystals are also found. The lower basalt horizons...quartz, and rarely also mordenite, stilbite and calcite. Individual clusters of cavansite and pentagonite...crystals can be found between the stilbite and calcite crystals. About 30 specimens of cavansite and pentagonite...possibilities. MINERALS ANDESITE CAVITIES Calcite CaCO3 Calcite is a relatively rare mineral in andesite |  | | Catalog/List | | 20 with SPINEL rich, orange granular masses in Calcite til a acattering of blue SPINEL micro octahedrons...crystals 1n vugh on matrix 1A 1/2 ins. CFolgosinho, Gouveia Portugal) t4 PLATTNERITEgood coverage of black...single crystal. (not terainated) Itacambira, Minas Gerias, Brazil) lem high f.1.50 2cm f.3 C172 SCAPOLITEvariety...Mine, :~ye C unty, Nevada U. S. A> 1. 5cm t5. 00 CALCITE 3ttractive pinv small r.rystals coapletly C177...about 3/4ins ac..-oss on matri:· with Prehnite or calcite (Bombay India) lx2 ins l ith ane area of Oken1te |  | | 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 (article/letter/editorial) | | J., Mn2+-activated luminescence in dolomite, calcite and magnesite: quantitative determination of manganese...AUTttOR INDEX VOLUMES 101-110 Arafijo, M.ED., see Gouveia, M.A . . . . . . . . . . . . . . . . . . . . ....rates of oxygen isotope exchange in the system: calcite-H20-NaCI at elevated temperatures . . . . . . .... . . . . . . . . . . . . . Dias, J.M.A., see Gouveia, M.A . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . Figueiredo, M.O., see Gouveia, M.A Figueiredo, M.O., see Pereira, L.C.J . . |  | | Journal (article/letter/editorial) | | Neoproterozoic Mara Rosa magmatic arc, central Brazil Claudinei G. de Oliveira *, Márcio M. Pimentel...Universidade de Brası́lia, Brası́lia-DF, 70910.900, Brazil Received 18 August 2003; accepted 24 April 2004...the Neoproterozoic Goiás Magmatic Arc, central Brazil, dates back to the beginning of the 1970s. The...rights reserved. Keywords: Goiás Magmatic Arc; Brazil; Copper – gold and gold deposits; Genetic models...+55-61-3072830; fax: +55-613474062. E-mail address: gouveia@unb.br (C.G. de Oliveira). 0169-1368/$ - see front |  | | Journal (issue) | | 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 |  | | Journal (article/letter/editorial) | | J., Mn2+-activated luminescence in dolomite, calcite and magnesite: quantitative determination of manganese...I01-110 107(3/4): 379-383 Arafijo, M.ED., see Gouveia, M.A . . . . . . . . . . . . . . . . . . . . ....rates of oxygen isotope exchange in the system: calcite-H20-NaCl at elevated temperatures . . . . . . .... . . . . 107(3/4): 379-383 Dias, J.M.A., see Gouveia, M.A . . . . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . Figueiredo, M.O., see Gouveia, M.A. . . . . . . . . . . . . . . . . . . . . |  | | Journal (issue) | | that a difference in difficulty of scratching a calcite cleavage with a knife-point could be noticed depending... euclase, axinite) 3. Substances that scratch calcite (Examples: diallage, lazulite, apatite, harrnotome)...harrnotome) 4. Substances that cannot scratch calcite (Examples: talc, gypsum, mica) Friedrich Mohs (1773-1839)...vofllme 35, March-April, 2004 1.Talc 2. Gypsum 3. Calcite 4. Fluorite 5. Apatite 6. Feldspar 7. Quartz 8...Halite (001) (111) 1.24 1.42 1.18 1.35 3 Calcite (0001) (1010) (1011) 3.63 2.90 2.02 3.44 2.74 |  | | Journal (article/letter/editorial) | | followed the methods of Prudêncio et al. (1986) and Gouveia et al. (1992). The spectral interference by U fission... REE, and Zr was corrected in accordance with Gouveia et al. (1987) and Martinho et al. (1991). Multivariate...followed by quartz, traces of alkali feldspars, and calcite. In the <2 mm fraction, illite and kaolin minerals...content, which was greater in sample BST-52 where calcite was detected. The tree-cluster analysis of the...and the UPGMA method (Statsoft, 2008), showed Calcite 3.03 Hematite 2.68 1 1 2 a clear differentiation |  | | Journal (issue) | | 0026-4628 'Continued on p. 415 Articles Diamonds in Brazil .................................................Fundao 21.910 Rio de Janeiro, Brazil Since their discovery in Minas Gerais, near the town of Diamantina...mining, fables and dreams. By the end of the 1700’s Brazil had become the world’s leading producer of diamonds...century. fficially the discovery of diamonds in Brazil is dated at 1727. Gold prospectors had found occasional...false idea that Brazil is a producer.” The sheer volume of diamonds coming from Brazil soon overwhelmed |  | | Journal (article/letter/editorial) | | carbonates at the K-T boundary of the Paraíba Basin, NE Brazil L.V.S. NARDI1*, M.L.L. FORMOSO, I.F. MÜLLER AND...do Sul. POBox 15011- CEP 91501-970 Porto Alegre, Brazil (lauro.nardi@ufrgs.br) The tetrad or double-double... Federal University of Pernambuco, Recife, PE, Brazil (valberlandiageo@yahoo.com.br) 2 LAGESE, Department...Pernambuco, Recife, PE, Brazil Introduction The Paraíba coastal basin, northeastern Brazil, contains a complete...Piemont unit the nitrogen content in the veinlets of calcite and enclosed schists reaches 13 vol.% whereas carbon |  | | Book | | nepheline, biotite and albite-antiperthite crystals in calcite-cored vein-dikes (by L. Moyd) 21:235-248 ALICE...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 |  | Figueiredo e Silva, R. C., Hagemann, S., Lobato, L. M., Rosiere, C. A., Banks, D. A., Davidson, G. J., Vennemann, T., Hergt, J. (2013) Hydrothermal Fluid Processes and Evolution of the Giant Serra Norte Jaspilite-Hosted Iron Ore Deposits, Carajas Mineral Province, Brazil. Economic Geology, 108 (4) 739-779 doi:10.2113/econgeo.108.4.739 | Journal (article/letter/editorial) | | Jaspilite-Hosted Iron Ore Deposits, Carajás Mineral Province, Brazil ROSALINE CRISTINA FIGUEIREDO E SILVA,1,† STEFFEN...HERGT6 1 Universidade 2 Centre Federal de Minas Gerais, Centro de Pesquisas Prof. Manoel Teixeira da...Campus Pampulha, Belo Horizonte, MG, 31270.901, Brazil for Exploration Targeting, School of Earth and...conditions during evolution of the hydrothermal fluid. Calcite-kutnahorite δ13C and δ18O values from the distal...isotope analyses have been performed on carbonates (calcite, dolomite); sulfur isotopes on sulfides (pyrite |
|
Gouveia, Minas Gerais, Brazil