 | Souza Neto, João Adauto, Legrand, Jean Michel, Volfinger, Marcel, Pascal, Marie-Lola, Sonnet, Philippe (2008) W–Au skarns in the Neo-Proterozoic Seridó Mobile Belt, Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit. Mineralium Deposita, 43 (2) 185-205 doi:10.1007/s00126-007-0155-1 | Journal (article/letter/editorial) | | Borborema Province in northeastern Brazil: an overview with emphasis on the Bonfim deposit João Adauto Souza Neto...located in the Borborema Province in northeastern Brazil and consists of a gneiss basement (Archean to Paleo-Proterozoic)...locally gold. Recently, the discovery of gold in the Bonfim tungsten skarn has resulted in a better understanding...Recife, Brazil e-mail: adauto@ufpe.br J. M. Legrand Departamento de Geologia, Universidade Federal do Rio...Rio Grande do Norte, Campus Universitário, Lagoa Nova, CEP 59.072-970 Natal, Brazil M. Volfinger : M.-L |  | | Journal (article/letter/editorial) | | mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil Nayara Moreira...mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil, Ore Geology...mineralization at the Bonfim polymetallic skarn deposit, Seridó Mobile Belt, Borborema Province, Brazil Nayara Moreira... da Arquitetura, s/n, 50740-550, Recife (PE), Brazil Corresponding author: Nayara Moreira de Mesquista...skarns in the Borborema Province, northeastern Brazil. The Bonfim W-Mo-Au-Bi-Te skarn occurs within a Neoproterozoic |  | | Journal (issue) | | INSTITUTE OF AMERICA Emeralds from Northeastern Brazil Diamantine: Coated Cubic Zirconia Precision Measurement...3 Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E...Polished emeralds from this deposit in northeastern Brazil, discovered in 2006, typically display a saturated...from Pakistan • Cat’s-eye emerald from Belmont, Brazil • Meteorite watches • Purple common opal from Mexico...of the publisher. About the Cover For decades, Brazil has been one of the world’s major sources of fine |  | | Journal (article/letter/editorial) | | adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...adjacent areas, northern São Francisco Craton, Brazil, based on structural geology and gravimetric modeling...Ulysses Guimarães, 2862, 41213-000 Salvador, BA, Brazil 2. Programa de Pós-Graduação em Geologia, Universidade...Brasília, DF, Brazil 3. Programa de Pós-Graduação em Geologia, Universidade do Vale do Rio dos Sinos, Avenida |  | Baumgartner, R., Romer, R. L., Moritz, R., Sallet, R., Chiaradia, M. (2006) COLUMBITE-TANTALITE-BEARING GRANITIC PEGMATITES FROM THE SERIDO BELT, NORTHEASTERN BRAZIL: GENETIC CONSTRAINTS FROM U-Pb DATING AND Pb ISOTOPES. The Canadian Mineralogist, 44 (1) 69-86 doi:10.2113/gscanmin.44.1.69 | Journal (article/letter/editorial) | | GRANITIC PEGMATITES FROM THE SERIDÓ BELT, NORTHEASTERN BRAZIL: GENETIC CONSTRAINTS FROM U–Pb DATING AND Pb ISOTOPES...SALLET Universidade Federal do Rio Grande do Norte, 59072–920, Natal, Brazil Massimo CHIARADIA Department...located in the Borborema Province, northeastern Brazil, is well known for its pegmatites and granites...Brasiliano orogeny, Seridó Belt, Borborema Province, Brazil. Sommaire La ceinture Seridó, située dans la province...The Borborema tectonic Province of northeastern Brazil hosts one of the major granitic pegmatite provinces |  | | Report (issue) | | the Companhia de Pesquisa de Recursos Minerals of Brazil UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON...1. Geology—Brazil—Goias (State) 2. Geology, Stratigraphic—Pre-Cambrian. 3. Geology—Brazil—Quadilatero...the Companhia de Pesquisa de Recursos Minerals of Brazil Precambrian oceanic rocks, including ophiolitic...carbonate rock of 900-1,300-m.y. (million year) age (Brazil Dept. Nac. Produgao Min eral, 1971). The Araxa...character and is considered to be 620-900 m.y. old (Brazil Dept. Nac. Produ |  | | Journal (article/letter/editorial) | | information for emeralds examined in this study. Region Brazil Madagascar Madagascar South Africa Zambia ...L2017.27.5 Bonfim farm, Caiçara do Rio do Vento, Borborema mineral province, Rio Grande do Norte Pegmatitic...2017-14.1, 2017-14.2, 2017-14.3 Ankadilalana emerald mine, Ambalahosy Nord Commune, Mananjary District, Vatovavy...9.3-1, 2017.9.3-2, 2017.9.3-3, 2017.9.4 Irondro mine, Andonabe Commune, Mananjary District, Vatovavy...5.2, RSA1, RSA2, RSA3, RSA4 Gravelotte Emerald Mine, Gravelotte, Murchison Range, Limpopo Province |  | | Journal (issue) | | 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,...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded...emerged from another Peruvian deposit: the Quiruvilca mine in northern Peru. The as-mined specimens typically |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Crystal of multicolored tourmaline (84 x 26 mm), Lavra do Sapo, Ferruginha, Conselheiro Pena, Minas Gerais...(Camara Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo...pedras preciosas do Brasil Bibliography 1. Gemology 2. Geology 3. Minerals - Brazil 4. Minerals- Classification... Mineralogy 6. Mineralogy - Brazil - History 7. Precious stones - Brazil I. Bartorelli, Andrea. II. Title |  | | Report (issue) | | the Departmento National da Produ^ao Mineral of Brazil under the auspices of the Agency for International...Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRIFERO, MINAS GERAIS, BRAZIL GEOLOGICAL...the Departmento Nacional da Produqao Mineral of Brazil under the auspices of the Agency for International...Minas Gerais, Brazil. (Regional geology of the Quadrilatero Ferrifero, Minas Gerais, Brazil) (Geological...Petrology Brazil Quadrilatero do Ferro. 3. Geology, Stratigraphic Pre-Cambrian. I. Brazil. Departamento |  | | Journal (article/letter/editorial) | | com/loi/tigr20 Geology and Mineral Resources of Brazil: A Review a a Inacio De Medeiros Delgado , Augusto...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil b US. Geological Survey, Denver, CO, 80225 Version...Thorman (1994): Geology and Mineral Resources of Brazil: A Review, International Geology Review, 36:6,...rights reserved. Geology and Mineral Resources of Brazil: A Review INACIO DE MEDEIROS DELGADO, AUGUSTO J...Pesquisa de Recursos Minerals, Scdvador, Bahia, Brazil AND CHARLES H. THORMAN US. Geological Survey, Denver |  | | Report (issue) | | Rocks of the Quadrilatero Ferrifero, Minas Gerais, Brazil GEOLOGICAL SURVEY PROFESSIONAL PAPER 641-B Prepared...the Departmento Nacional da Producao Mineral of Brazil under the auspices oj the Agency for International...Gerais, Brazil By NORMAN HERZ REGIONAL GEOLOGY OF THE QUADRILATERO FERRlFERO, MINAS GERAIS, BRAZIL GEOLOGICAL...the Departmento Nacional da Producao Mineral of Brazil under the auspices of the Agency for International...map of the Quadrildtero Ferrffero, Minas Gerais, Brazil showing areas of gneissic and igneous rocks___ |  | Teles, Guilherme S., Chemale, Farid, Ávila, Janaína N., Ireland, Trevor R., Dias, Airton N.C., Cruz, Daniele C.F., Constantino, Carlos J.L. (2020) Textural and geochemical investigation of pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for paleoenvironmental conditions and formation of pre-GOE metaconglomerate-hosted Au-(U) deposits. Geochimica et Cosmochimica Acta, 273. 331-353 doi:10.1016/j.gca.2020.01.035 | Journal (article/letter/editorial) | | Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Pyrite in Jacobina Basin, São Francisco Craton, Brazil: Implications for Paleoenvironmental Conditions...Geologia, Universidade Federal de Campina Grande, Campina Grande, Brazil 2Programa 3Programa de Pós-Graduação...Brasília, Brasília, Brazil de Pós-Graduação em Geologia, Universidade do Vale do Rio dos Sinos, São Leopoldo |  | | Journal (issue) | | quantitative chemical analyses to distinguish samples from Brazil, Nigeria, and Mozambique. 660 Geographic Origin...Micro-World, and Charts are not peerreviewed sections but do undergo technical and editorial review. Copyright...Caplan. The back cover shows emeralds from the Chivor mine in Colombia (3.90 ct faceted stone and 2.35 cm crystal)...gemological laboratories who perform this service, do not understand the complexities accompanying the...to use this platform to present what we know and do from our perspective. As one can see, this still |  | | 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 |  | | Journal (issue) | | [date accessed: Jan. 30, 2013]. Donohue P. (1980a) Do auction gems ruffle market? JCK, Vol. 151, No. 2...moonstones (a and b) and an orange moonstone (c) do not present peaks at 4344, 4065, 3053, and 3038 cm–1...moonstone, collected from three orthogonal directions, do show these four peaks. The 4344 cm–1 peak is from...Place E MERALDS FROM THE FAZENDA BONFIM REGION, RIO GRANDE DO NORTE , BRAZIL J. C. (Hanco) Zwaan, Dorrit E...Education, Science, and Technology of Rio Grande do Norte in Brazil. Jan Kanis, a consulting geologist specializing |  | | Journal (article/letter/editorial) | | Universidade de S~ao Paulo, Rua do Lago 562, CEP 05508-080, S~ ao Paulo, SP, Brazil ABSTRACT This study uses...Archean TTG crust in the S~ ao Francisco Craton, Brazil was reworked by partial melting at ~730 °C and...during crustal reworking. The Kinawa migmatite in Brazil was produced where meta-granodiorite has partially...(Oliveira & Carneiro, 2001), and is correlated with the Rio das Velhas Supergroup (Dorr, 1969; Baltazar & Zucchetti...leucocratic granite or granodiorite compositions, and do not contain the pre-anatectic compositional layering |  | Vishiti, Akumbom, Suh, Cheo Emmanuel, Lehmann, Bernd, Shemang, Elisha Mutum, Ngome, Njumbe Lionel Junior, Nshanji, Nfor Jones, Chinjo, Fonkwo Edmond, Mongwe, Oben Yoland, Egbe, Ashu Jones, Petersen, Sven (2018) Mineral chemistry, bulk rock geochemistry, and S-isotope signature of lode-gold mineralization in the Bétaré Oya gold district, south-east Cameroon. Geological Journal, 53 (6) 2579-2596 doi:10.1002/gj.3093 | Journal (article/letter/editorial) | | African Cratons, with some gold deposits in NE Brazil and Cameroon. (b) Map of Cameroon showing the distribution...involved in the deposition of Province north‐eastern Brazil (Neto, Legrand, Volfinger, Pascal, & the sulphide...Lom regional metamorphism (garnet–staurolite–andalusite–sillimanite). This Basin developed on old crust...the mineralization is more dis- north‐eastern Brazil. The presence of hypogene haematite implies an...Charlotte quartz vein stockwork, Mt Charlotte gold mine, Kalgoorlie, Australia: Time constraints, down‐plunge |  | | Book (edition) | | Salinas, Peru, H Variscite, xx 5 mm, Iturnbiara, Brazil, H Rhodocbrosite, polished, 50 mm, Capillitas,... China, H Page 1: MuscO\ite. 45 mm, Linopolis, Brazil, H Page 2: Vivianite, I 00 mm, Huanzala, Bolivia...Brazilianite, 35 mm, Linopolis, Brazil, H Page 13: Gold, 35 mm.Eagle's est Mine, California, G Publi!>hed...(2.B. acanthite group). Monoclinic, C2/m, a,b,c Rio Blanco County. Colorado. AM. 63. 930-937. 1978. 4...Rice, Dolores co., both Colorado, at the Questa mine, Taos co., New 1994. Abernathyite K2[(UOJ 2l(AsO_J2]•6HzO |  | | Journal (issue) | | Federal University of Ouro Preto, Minas Gerais, Brazil **University of Mainz, FRG 1. Introduction The...Grosso and after that using the BR 407 to Senhor do Bonfim. The distance between Salvador and Campo Formoso...been the most important emerald mining region in Brazil until the discovery of the Santa Terezinha occurrence...Formoso/ "fCARNAIBA Mirangaba \ ~ ^ * * *• ASanhnr do Ronf.m Monte Santo ^**ol!Euclides da Cunna Lpindobaçu...*°* ,x Mundo^^^A B a i x a Novo Grand 'Entre Rio« « •««Sao AlagoinhojKy FE IRA DE SANTANA\ (f o\ |  | | Report (issue) | | directly measure reserves, and companies or governments do not directly report reserves or reserve base to the...Australia, Brazil Canada China, Mexico, South Africa, Mongolia China, Mexico, Canada, Brazil China, Japan...China India, Belgium, China, Brazil Brazil, Canada, Estonia, Germany Brazil, Germany, Madagascar, Canada...Japan, Russia Canada Mexico, Germany Australia, Brazil, China, Germany Russia, Netherlands, Belgium United...Canada, China, India, Finland Greece Canada, Russia, Brazil, Venezuela Canada, Mexico, Spain, Dominican Republic |  | Franz, Gerhard, Vyshnevskyi, Oleksii, Taran, Michail, Khomenko, Vladimir, Wiedenbeck, Michael, Schiperski, Ferry, Nissen, Jörg (2020) A new emerald occurrence from Kruta Balka, Western Peri-Azovian region, Ukraine: Implications for understanding the crystal chemistry of emerald. American Mineralogist, 105 (2) 162-181 doi:10.2138/am-2020-7010 | Journal (article/letter/editorial) | | (olivine for Mg, hematite for Fe, rutile for Ti, andalusite for Si and Al, albite for Na) and pure metal...emeralds are their low MgO and FeO contents, which do not exceed 1.0 wt%, and a high Na2O content of ~1...value of 2.870 apfu, Table 4 for a crystal from Brazil; Aurisicchio et al. 1988). This deficit is balanced...apfu) and Al (0.085 apfu) for the crystal from Brazil. Thus, in all emeralds except those from Ural Mts...1.990 2.913 0.029 0.011/0.047 6.000 – – 9 Auris Brazil 0.340 – – 1.800 0.158 0.039 – – – 1.997 2.870 0 |  | | Report (issue) | | data available by December 23, 2004, although the mine production figures in Table 1 are estimated based...journals and Government reports from Australia, Brazil, Canada, Chile, China, Germany, India, Japan, Mexico...compared with 2003 for U.S. raw nonfuel mineral mine production. The increasingly important role of China...Suriname Brazil, Canada, Estonia, Germany China, South Africa, Mexico China, Mexico, Canada, Brazil China...Australia, France India, Belgium, China, Germany Brazil, Germany, Madagascar China, France, Japan, Estonia |  | | Report (issue) | | Suriname Brazil, Canada, Estonia, Ger many China, South Afric a, Mexico China, Mexico, Canada, Brazil China...Australia, Mexico India, Belgium, China, Ger many Brazil, Germany, Madagascar China, France, Japan, Estonia...Mexico, China, United Kingdom Peru, China, Bolivia, Brazil, Indonesia Italy, Canada, India, Spain China, India...ay, Russia, Australia Japan, Kazakhstan, Russia, Brazil Canada, China, Russia, Israel Trinidad and Tobago...Venezuela, Greece Canada, Mexico, Venezuela Canada, Brazil, Australia, Venezuela Canada, China, Mexico, Australia |  | | Report (volume) | | journals and Government reports from Australia, Brazil, Canada, Chile, China, Germany, India, Japan, Mexico...Mexico, Chile Canada Jamaica, Guinea, Australia, Brazil Brazil, Canada, Estonia, Germany China, Mexico, South...South Africa, Mongolia China, Mexico, Canada, Brazil China, Canada, Japan, Russia South Africa, Gabon,... Australia, China India, Belgium, China, Brazil Brazil, Germany, Madagascar, Canada China, France, Japan...Ireland, Ukraine, Russia Canada, Russia, Venezuela, Brazil Trinidad and Tobago, Canada, Russia, Ukraine Chile |
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