 | | Journal (article/letter/editorial) | | University Auburn, Alabama 36849 cookrob@auburn.edu Magnetite Zinc Corporation of America Mine No. 4, St. Lawrence...these early attempts to produce iron were from magnetite occurrences, some of which were the source of...that exploited magnetite ores. Interestingly, some of the most spectacular magnetite specimens to be...Corporation of America mine No. 4 at Balmat. Magnetite is one of many black, metallic to submetallic...density is 5.20. It is, of course, quite magnetic. Magnetite Dr. Robert B. Cook, an executive editor of Rocks |  | de Paula Garcia, Pedro Maciel, Teixeira, João Batista Guimarães, Misi, Aroldo, da Silva Sá, José Haroldo, da Silva, Maria da Glória (2018) Tectonic and metallogenic evolution of the Curaçá Valley Copper Province, Bahia, Brazil: A review based on new SHRIMP zircon U-Pb dating and sulfur isotope geochemistry. Ore Geology Reviews, 93. 361-381 doi:10.1016/j.oregeorev.2018.01.007 | Journal (article/letter/editorial) | | evolution of the Curaç á Valley Copper Province, Bahia, Brazil: A review based on new SHRIMP zircon U-Pb dating...evolution of the Curaç á Valley Copper Province, Bahia, Brazil: A review based on new SHRIMP zircon U-Pb dating...evolution of the Curaçá Valley Copper Province, Bahia, Brazil: A review based on new SHRIMP zircon U-Pb dating...Universidade Federal da Bahia (UFBA), Rua Caetano Moura 123, Federação, Salvador, BA, Brazil, 40270-340. (2)...Province, northeastern São Francisco Craton, Bahia State, Brazil, covering an area of about 1,700 km2. The |  | | Journal (issue) | | Nordeste brésilien. L'accès se fait à partir de Juazeiro do Norte (altitude 400 mètres), où se trouve le...kilomètres au Nord et Juazeiro da Bahia, à 405 kilomètres au Sud. Il y a 11 kilomètres de Juazeiro à Crato. Après...schistes argileux et de phyllites: en E.-O. vers Juazeiro et Milages. Sa partie supérieure. comme le socle...numéros 14 et 15. • Sodalite et syénite à sodalite, Bahia, numéro 11. • Visite de l'exploitation de diamants...peuvent être colorées dans les bains des acides. MAGNETITE 8 (Fe 3 0 4) Légèrement attaquée dans l'acide |  | Teles, Guilherme S., Chemale, Farid, Ávila, Janaína N., Ireland, Trevor R. (2022) The Paleoarchean Northern Mundo Novo Greenstone Belt, São Francisco Craton: Geochemistry, U–Pb–Hf–O in zircon and pyrite δ34S-Δ33S-Δ36S signatures. Geoscience Frontiers, 13 (5) 101252 doi:10.1016/j.gsf.2021.101252 | Journal (article/letter/editorial) | | Grande, Brazil Programa de Pós-Graduação em Geologia, Universidade de Brasília, Brasília, Brazil Programa...Universidade do Vale do Rio dos Sinos, São Leopoldo, Brazil d Research School of Earth Sciences, The Australian...Universidade Federal de Campina Grande, Campina Grande, Brazil. E-mail address: guilherme.santos@professor.ufcg...São Francisco Craton, in the state of Bahia, northeastern Brazil, consists of four main crustal segments...approximately 300 km from the Mundo Novo region to the Juazeiro region. According to its first definition, the |  | | Journal (issue) | | copper find were reported in Brazil; both in the state of Bahia, at Juazeiro and Senhor do Bonfim. Experts...up to 2200 tpd of 59% ore from its 800,000ton magnetite deposit at Trengganu in the south of the country |  | Vieira, R. M. S. P., Tomasella, J., Alvalá, R. C. S., Sestini, M. F., Affonso, A. G., Rodriguez, D. A., Barbosa, A. A., Cunha, A. P. M. A., Valles, G. F., Crepani, E., de Oliveira, S. B. P., de Souza, M. S. B., Calil, P. M., de Carvalho, M. A., Valeriano, D. M., Campello, F. C. B., Santana, M. O. (2015) Identifying areas susceptible to desertification in the Brazilian northeast. Solid Earth, 6 (1). 347-360 doi:10.5194/se-6-347-2015 | Journal (article/letter/editorial) | | Campos, Brazil Nacional de Monitoramento e Alertas de Desastres Naturais, Cachoeira Paulista, Brazil 3 Fundação...Fortaleza, Brazil 4 Secretaria de Agricultura Agropecuária e Abastecimento de Goiás, Goiânia, Brazil 5 Secretaria...e Desenvolvimento Rural Sustentável, Brasília, Brazil 2 Centro Correspondence to: R. M. S. P. Vieira...Bolivia, Chile, Mexico, Peru and Brazil (Arellano-Sota et al., 1996). In Brazil, the most critical desertification...to desertification in the northeastern region of Brazil and the northern regions of the states of Minas |  | | 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) | | crude xi. 2x2 ½ . . . . ...... . 2.00 Pyrolusite, Brazil. Very good xld. mass. 3x2x2 .................................................... 23 CORUNDUM IN BRAZIL ................................................................................ 27 DIAMONDS IN BRAZIL .................................................gold, silver, various copper ores, 1nanganese, magnetite, fluorite, graphite, feldspar, beryl and calcite...even more interesting specimens than the former. Magnetite in tiny resplendent octahedron , implanted on |  | | Book | | American Craton 2.7.1 Guiana Shield 2.7.2 Central Brazil Shield 2.8 African Craton: Southern Africa 2.8...3.7.2 Goias Massif, Tocantins Province, Central Brazil Shield 3.7.3 Sao Francisco Craton, Atlantic Shield...Craton 4.7.1 Amazonian Craton: Guiana and Central Brazil Shields (less Tocantins Province) 4.7.2 S5o Francisco...Francisco Craton 4.7.3 Tocantins Province (Central Brazil Shield) 4.8 African Craton: Southern Africa 4.8...(-Patagonian)Craton (1) Guiana Shield, (2) Central Brazil Shield, (3) Atlantic Shield, and buried extensions |  | | Book | | American Craton 2.7.1 Guiana Shield 2.7.2 Central Brazil Shield 2.8 African Craton: Southern Africa 2.8...3.7.2 Goias Massif, Tocantins Province, Central Brazil Shield 3.7.3 Sao Francisco Craton, Atlantic Shield...Craton 4.7.1 Amazonian Craton: Guiana and Central Brazil Shields (less Tocantins Province) 4.7.2 S5o Francisco...Francisco Craton 4.7.3 Tocantins Province (Central Brazil Shield) 4.8 African Craton: Southern Africa 4.8...(-Patagonian)Craton (1) Guiana Shield, (2) Central Brazil Shield, (3) Atlantic Shield, and buried extensions |  | | Book | | Egypt 132 Argentina 132 Australia 133 Austria 135 Brazil 135 Bulgaria 155 Canada 156 Commonwealth of Independent...familiarity with Brazil and the importance of the 'Imperial' topaz deposits at Ouro Preto, Brazil, in the world...assumed importance) in the trade of deposits in Brazil and the former USSR, particularly those of pink...for this research. Information on the Ouro Preto, Brazil, deposits would not have been as complete without...Carlos Barbosa, Brazil; Professor J. Cassedanne, Brazil; Ora M.H. Falabella, Brazil; Dr T. Lee, Australia; |  | | Report (issue) | | reconnaissance of the Curar;~ River basin area, Bahia, Brazil, by R. W. Lewis, Jr., S. de Q. Mattoso, and...mineralized ground water in Precambrian rocks, northeast Brazil, by S. L. Schoff__________________________ Regional...chlorite, gahnite, garnet, tourmaline, and accessory magnetite, sphene, a patite, and zircon. Except for dikelike...plagioclase. In the quartz gabbro, quartz and magnetite embay the hornblende and other earlier :formed...tholeiites have similar chemical analyses and min- Magnetite . __ __ 10. 1 4. 6 4. 4 2. 5 1.5 1.7 eralogy; |
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Juazeiro, Bahia, Brazil