 | 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 |  | 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 |  | | Journal (article/letter/editorial) | | evolution of the Quadrilfitero Ferrifero, Minas Gerais, Brazil Farid Chemale Jr.a, Carlos A. RosiCreb and Issamu...Geologia, Universidadedo Vale do Rio dos Sines, 93023-000 Sa’oLeopoldo, RS, Brazil bCentro de Pesquisas M....Horizonte, MC, Brazil ‘Departamento de Geologia, UniversidadeFederal de Ouro Preto. Morro do Cruzeiro, 35400-000...35400-000 Ouro Preto, MG, Brazil Received February 3, 1992; revised version accepted March 24, 1993 ABSTRACT...nucleation of regional synclines in the overlying Rio das Velbas and Minas supergroups strata. Such regional |  | | Journal (article/letter/editorial) | | Min., Bol. 209, Rio de Janeiro 1964. DE MORAES, L.J.: Dep6sitos diamantlferos no norte do Estado de Minas...Bol. 8, Rio de Janeiro 1934. - - : Geologia Geral. - - Serv. Fore. Prod, Min., Bol. 19, Rio de ]aneiro...142, Rio de Janeiro 1968. PFLU~, R., SCHOBnENaAUS, C., & RENGES, F.: Contribuig~o ~ geotect6nica do Brasil...Bahia. - - Min. e Met,, 15, Rio de Janeiro 1951. SCHOgZENHAUS, C.: Sure,rio da geologia da Quadrieula Ibitiara...Ibitiara, Bahia, Sure,rio da geologia da Quadrieula de Paramirim, Bahia. - - SUDENE, Div. Geol., Bol |  | | 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 |  | Moreno, J.A., Baldim, M.R., Semprich, J., Oliveira, E.P., Verma, S.K., Teixeira, W. (2017) Geochronological and geochemical evidences for extension-related Neoarchean granitoids in the southern São Francisco Craton, Brazil. Precambrian Research, 294. 322-343 doi:10.1016/j.precamres.2017.04.011 | Journal (article/letter/editorial) | | granitoids in the southern São Francisco Craton, Brazil J.A. Moreno, M.R. Baldim, J. Semprich, E.P. Oliveira...granitoids in the southern São Francisco Craton, Brazil, Precambrian Research (2017), doi: http://dx.doi...granitoids in the 3 southern São Francisco Craton, Brazil 4 J.A. Moreno*1, M.R. Baldim1, J. Semprich1,...Campinas – UNICAMP, 13083-970 Campinas, 8 SP, Brazil 9 2: División de Geociencias Aplicadas, Instituto...Universidade de São Paulo, Rua do Lago, 562, 13 05508-080 São Paulo, SP, Brazil 14 *: Corresponding author: |  | | Journal (article/letter/editorial) | | evolution of the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil: A review of the setting...Survey of Brazil, Av. Brasil 1731, Funcionários, Belo Horizonte, Minas Gerais, 30140-002, Brazil Received...2005 Available online 6 March 2007 Abstract The Rio das Velhas greenstone belt is located in the Quadrilátero...State of Minas Gerais, SE Brazil. The metavolcano–sedimentary rocks of the Rio das Velhas Supergroup in...Brasiliano Orogenic Cycle. Gold deposits in the Rio das Velhas greenstone belt are structurally controlled |  | | Journal (article/letter/editorial) | | reworking of Archean crust in the São Francisco Craton, Brazil: a dating and isotopic study of the Kinawa migmatite...reworking of Archean crust in the São Francisco Craton, Brazil: a dating and isotopic study of the Kinawa migmatite...reworking of Archean crust in the São Francisco Craton, Brazil: a dating and isotopic study of the Kinawa migmatite...Universidade de São Paulo, Rua do Lago 562, CEP 05508-080, São Paulo, SP, Brazil. *Corresponding author: bruna...portion of the São Francisco Craton (SFC) in SE Brazil was formed during the Archean, and four main crust-building |  | | 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... almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite, chrysoberyl, chal- For more than...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded |  | D'el-Rey Silva, Luiz José Homem, Dantas, Elton Luiz, Teixeira, João Batista Guimarães, Laux, Jorge Henrique, da Silva, Maria da Glória (2007) U–Pb and Sm–Nd geochronology of amphibolites from the Curaçá Belt, São Francisco Craton, Brazil: Tectonic implications. Gondwana Research, 12 (4) 454-467 doi:10.1016/j.gr.2006.11.008 | Journal (article/letter/editorial) | | amphibolites from the Curaçá Belt, São Francisco Craton, Brazil: Tectonic implications Luiz José Homem D'el-Rey...Brasília, Campus Darcy Ribeiro, Asa Norte, 70.910-900, Brasília — DF, Brazil Grupo de Metalogênese, Centro...40170-290, Bahia, Brazil d Serviço Geológico do Brasil (CPRM) - Av. Pasteur 404, Urca, 22290-240 Rio de Janeiro...Janeiro — RJ, Brazil b c Received 24 May 2006; received in revised form 29 July 2006; accepted 23 November...orogen in the São Francisco craton, northeastern Brazil, and comprises supracrustal rocks, gneisses of |  | | 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 |  | | 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 |  | | Journal (article/letter/editorial) | | craton and adjacent Araçuaı́ and Ribeira belts, Brazil Hannes K. Brueckner a,b, *, Dickson Cunningham...Federal de Ouro Preto, Ouro Preto M.G. 35.400, Brazil e Department of Geology, University of Illinois...Paleoproterozoic São Francisco craton of eastern Brazil is surrounded on all sides by Brasiliano (=Pan...reserved. Keywords: Araçuaı́ belt; Brasiliano event; Brazil geology; Ribeira belt; São Francisco craton; Sm–Nd...Africa ( Fig. 1), Fig. 1. West Africa–eastern Brazil Gondwana reconstruction showing location of cratons |  | | Journal (article/letter/editorial) | | margin of the São Francisco paleocontinent (SE Brazil): Constraints from metamafic–ultramafic rocks Marco...Geological Survey of Brazil – CPRM, Av Brazil 1731, Belo Horizonte 30140-002, Brazil Department of Mineral...The Campos Gerais Domain (CGD) in southeastern Brazil is an approximately 180 km 35 km area of Archean–Proterozoic...margin of the São Francisco paleocontinent (SE Brazil): Constraints from metamafic–ultramafic rocks,...Ga. The Campos Gerais Domain (CGD) in southeast Brazil is a 180 km 35 km area of Archean–Proterozoic |  | | 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___ |  | | 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 |  | | Journal (article/letter/editorial) | | imprints on units of the southern Araçuai belt, se Brazil: The history of superimposed Transamazonian and...imprints on units of the southern Araçuai belt, se Brazil: The history of superimposed Transamazonian and...IMPRINTS ON UNITS OF THE SOUTHERN ARAÇUAI BELT, SE BRAZIL: THE HISTORY OF SUPERIMPOSED TRANSAMAZONIAN AND...E D MA NU SC RI Morro do Cruzeiro, 35400-000 Ouro Preto, MG, Brazil. AC CE Short title: Superimposed...that surround the São Francisco craton in southern Brazil are a consequence of tectonic processes that resulted |  | | Journal (issue) | | diamondconference.ae. The panels cover ‘Why did diamonds do so well during COVID?’, ‘The new consumer and lab...minimal environmental and social impact, and 86% would do so for jewellery with materials having traceable... Tanzania, around the end of the 1960s, and the mine was active for about a decade. Since then, gem-quality...mentioned in the literature, in samples from Austria, Brazil, China, Egypt, India, South Africa and Ukraine...OF GEMMOLOGY, 38(2), 202 2 stones from Bahia, Brazil (Santiago 2015) and opaque to partially translucent |  | | Journal (volume) | | volume. TIER 1 RIO TINTO EXPLORATION Rio Tinto Exploration Pty. Ltd. Companhia Vale do Rio Doce (Vale)...Giant Serra Norte Iron Ore Deposits in the Carajás Mineral Province, Pará State, Brazil Rosaline Figueiredo...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...geology for De Beers Consolidated, Companhia Vale do Rio Doce (Vale), and as an independent consultant for |  | Castaing, C., Feybesse, J.L., Thiéblemont, D., Triboulet, C., Chèvremont, P. (1994) Palaeogeographical reconstructions of the Pan-African/Brasiliano orogen: closure of an oceanic domain or intracontinental convergence between major blocks?. Precambrian Research, 69 (1) 327-344 doi:10.1016/0301-9268(94)90095-7 | Journal (article/letter/editorial) | | regions (Hoggar, Adrar des Iforas, northeastern Brazil, Nigeria, Central Africa) has led to the recognition...Central Africa and farther south into northeastern Brazil, which was linked with Africa during the Proterozoic...Brasilianobelts in Ghana-Togo-Benin and northeastern Brazil. Based on geological mapping in Togo (Affaton et...OfficeBrninois des Mines, 1984), in northeastern Brazil (Dantas, 1974;CPRM, 1983). Modifiedafter Costa...Brasiliano belts of Ghana-Togo-Benin and northeastern Brazil. Based on new data and Castaing et al. (1988), |  | | 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...comprises ultramafic rocks, amphibolites, garnet–sillimanite schists and quartzites, and banded iron formations...(Oliveira & Carneiro, 2001), and is correlated with the Rio das Velhas Supergroup (Dorr, 1969; Baltazar & Zucchetti |  | | Journal (issue) | | a n d this often saved argument as to who should do what. Thus, all the drilled pearls (except obvious...mined since the turn of the century at the Barton mine, North Creek, New York, and at Emerald Creek, Clarkia...O R K ALMANDINE T h e Barton mine (formerly known as the Rogers mine) on Gore mountain, North Greek...mined for use as an abrasive. Crystals from this mine sometimes attain a diameter of 60 cm. T h e garnet...the garnet and associated minerals of the Barton mine near North Creek New York. A m . Mineral., 34, 573-582 |  | 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...regional metamorphism (garnet–staurolite–andalusite–sillimanite). This Basin developed on old crust and evolved...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 |  | | Journal (issue) | | Micro-World, and Charts are not peerreviewed sections but do undergo technical and editorial review. Copyright...Spinel Topaz Turquoise Potosí Salvador da Bahia Rio de Janeiro Moscow Karakorum Tunis Kashgar Sea...Rainier’s footsteps: Journey to the Chivor emerald mine. G&G, Vol. 52, No. 2, pp. 168–187, http://dx.doi...Fancy black diamonds do not show major variations in hue or color saturation, but they do vary by transparency... a few examined by GIA have come from the Panna mine in India (Koivula et al., 1992), and there have |
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