 | 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) | | 1007/s00126-007-0174-y PREFACE Selected ore deposits of Brazil Steffen Hagemann & Jose Carlos Frantz & Hardy Jost...in Brazil is the outgrowth of the “First Brazilian Symposium on Metallogeny” held in Gramado, Rio Grande...Grande do Sul, in May 2005. The selection of papers mirrors quite well the range of commodities and fascinating...fascinating diversity of ore deposit types Brazil has to offer. The thematic issue starts with a paper...Universidade Federal do Rio Grande do Sul, Av Joao Obino 472/602, Porto Alegre 90470-150, Brazil H. Jost CPRM—Serviço |  | Vial, D.S., Abreu, G.C., Schubert, G., Ribeiro-Rodrigues, L.C. (2007) Smaller gold deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil. Ore Geology Reviews, 32 (3) 651-673 doi:10.1016/j.oregeorev.2005.01.004 | Journal (article/letter/editorial) | | deposits in the Archean Rio das Velhas greenstone belt, Quadrilátero Ferrífero, Brazil D.S. Vial a,⁎, G.C...c a CVRD—Companhia Vale do Rio Doce, BR 381, km 450, Santa Luzia, MG, Brazil Instituto de Geociências...Amparo à Pesquisa do Estado de São Paulo, Rua Major Solbiat, 226, Torrinha, SP, Brazil Fundação Educacional...BR-116, Km 526, Bairro das Graças, Caratinga, MG, Brazil b c Received 26 June 2003; accepted 2 January...occurrences in the Archean greenstone belt comprising the Rio das Velhas Supergroup. There are numerous small gold |  | | Book | | AV. PRESIDENTE WILSON, 231 - RIO DE JANEIRO MINES AND MINERALS IN BRAZIL --= ··--· ··- ·-·=- MINES... MINES AND MINERALS IN BRAZIL J OSIAS LEAO (ECONOMIC DIVISION - MINISTRY OF FOREIGN AFFAIRS) CENTRO DE...DE ESTUDOS ECONOMICOS RIO DE JANEIRO PREFACE This book was planned by Dr. Arno Kondei· - head of the...regarding water power and industry of electr·icity in Brazil were specially prepared at the Division of Waters........ 189 SUMMARY OF THE MINERAL RESERVES OF BRAZIL..... . ... ....... . .. 199 STATISTICAL TABLES |  | | 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 (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...spinel (Figure 4b), spessartine (Figure 4c), almandine, quartz, zircon, apatite, topaz, sillimanite,...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded |  | | 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) | | the octahedral and tetrahedral substitution, and do not substitute for Be or Al (Auriscchio et al., 1988)...of emerald occur in Colombia, Zambia, Pakistan, Brazil, Russia, Afghanistan, Zimbabwe and Madagascar....1986). Although the earlier Somerset mine and the later Cobra mine have been the main source of the emeralds...the 1960s, the Gravelotte Project was the largest mine of its type in the world, employing over 400 sorters...AFRICA Figure 3. The Leydsdorp Gravelotte Emerald Mine (GEM) showing the Cobra Pit and surroundings (after |  | Tassinari, Colombo C.G., Mateus, Antonio M., Velásquez, Marta E., Munhá, José M.U., Lobato, Lydia M., Bello, Rosa M., Chiquini, Ana Paula, Campos, William F. (2015) Geochronology and thermochronology of gold mineralization in the Turmalina deposit, NE of the Quadrilátero Ferrífero Region, Brazil. Ore Geology Reviews, 67. 368-381 doi:10.1016/j.oregeorev.2014.12.013 | Journal (article/letter/editorial) | | deposit, NE of the Quadrilátero Ferrífero Region, Brazil Colombo C.G. Tassinari a,⁎, Antonio M. Mateus b...Universidade de São Paulo, Rua do Lago, 562, 05508-900 São Paulo, SP, Brazil Departamento de Geologia, Faculdade...Ciências, Universidade de Lisboa, CeGUL, C6, Campo Grande, 1749-016 Lisboa, Portugal Departamento de Geociências...Universidade Federal do Amazonas, Av. Gal. Rodrigo Otávio, 6200, Manus CEP: 69077-000, Amazonas, Brazil, d Instituto...6627, Pampulha, Belo Horizonte, MG, 31270-901, Brazil e Jaguar Mining Group, Rua Levindo Lopes 323, Funcionarios |  | | 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___ |  | Brando Soares, Mariana, Corrêa Neto, Atlas Vasconcelos, Bertolino, Luiz Carlos, Alves, Felipe Emerson André, de Almeida, Antônio Modesto, Montenegro da Silva, Pedro Henrique, Mabub, Ricardo Oliveira de Araújo, Manduca, Luedson Guimarães, Araújo, Ivan Mendes Caixeta de Pamplona (2018) Multistage mineralization at the hypozonal São Sebastião gold deposit, Pitangui greenstone belt, Minas Gerais, Brazil. Ore Geology Reviews, 102. 618-638 doi:10.1016/j.oregeorev.2018.09.028 | Journal (article/letter/editorial) | | Deposit, Pitangui Greenstone Belt, Minas Gerais, Brazil Mariana Brando Soares, Atlas Vasconcelos Corrêa...Deposit, Pitangui Greenstone Belt, Minas Gerais, Brazil, Ore Geology Reviews (2018), doi: https://doi.org/10...Deposit, Pitangui Greenstone Belt, Minas Gerais, Brazil Mariana Brando Soares1, Atlas Vasconcelos Corrêa...de Geociências, Universidade Federal do Rio de Janeiro, Brazil. 2 – Departamento de Geologia, Instituto...Federal do Rio de Janeiro, Rio de Janeiro, Brazil. 3- Centro de Tecnologia Mineral (CETEM), Rio de Janeiro |  | | Journal (issue) | | a n d this often saved argument as to who should do what. Thus, all the drilled pearls (except obvious...or advice be needed. 272 INCLUSIONS IN GEM ALMANDINE FROM IDAHO AND NEW YORK By PETE J. DUNN, M.A....INTRODUCTION Gem almandine has been mined since the turn of the century at the Barton mine, North Creek,...localities have produced prodigious amounts of almandine which, although only a small percentage thereof...Creek, Idaho dine #128192 Almandine 28192 SH 40·24 Gore Mtn, N.Y. Almandine (Miers 1926) ö |  | | 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) | | 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 |  | Huang, Yi-Ru, Guo, Na, Tang, Ju-Xing, Shi, Wei-Xin, Ran, Feng-Qin (2020) Garnet Characteristics Associated with Jiama Porphyry-Skarn Cu Deposit 1# Skarn Orebody, Tibet, Using Thermal Infrared Spectroscopy. Minerals, 11 (1) 5 doi:10.3390/min11010005 | Journal (article/letter/editorial) | | Al Cr Fe3+ Fe2+ Mn Mg Ca Andradite Grossular Almandine + Pyrope + Spessartine 33.7 98.69 34.26 98.69...49 0 1.2 0.16 0.03 0.02 3.13 72.15 Grossular Almandine + Pyrope + Spessartine 1.2 12.26 9.51 3.24...Al Cr Fe3+ Fe2+ Mn Mg Ca Andradite Grossular Almandine + Pyrope + Spessartine 3.07 0 0.24 0 1.4 0.25...Mg 0.01 Ca 3.13 Andradite 97.15 Grossular 1.95 Almandine + Pyrope + 0.88 Spessartine Minerals 2021, 11...the hydrothermal and mineralization centre of the mine area [20,21,63–65], but reports on successful SWIR |  | | 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\ |  | | 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 |  | | Journal (issue) | | Amazonite in Quartz from Bahia, Brazil | Blue Apatite in Jasper from Brazil | Aquamarine Crystal with ‘Enhydro’...‘Enhydro’ Inclusion from Brazil | Catapleiite from Mont Saint-Hilaire, Québec, Canada | Chrysocolla Chalcedony...offers webinars on pink diamonds from the Argyle mine in Australia, ruby treatments and current market...Quartz from Bahia, Brazil Gem-quality amazonite feldspar is well known from Brazil, particularly from...Souto (Gems in Gems, Teófilo Otoni, Minas Gerais, Brazil) had some new production of amazonite from Bahia |  | | 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) | | Micro-World entries are not peer-reviewed sections but do undergo technical and editorial review. Copyright...surface of a diamond crystal from the Kelsey Lake mine on the Colorado-Wyoming border. This Nomarski differential...in the trade, with most samples originating from Brazil or Madagascar (Cassedanne and Roditi, 1991; Pezzotta...examined in a natural sapphire, in rose quartz from Brazil, and in brownish pink quartz from India. The focus...colorless, slightly pink rose quartz cabochons from Brazil and two similar asteriated slightly brownish pink |  | | Journal (issue) | | observed in “rainbow” hematite from Minas Gerais, Brazil. 40 DNA Techniques Applied to the Identification...Micro-World, and Charts are not peerreviewed sections but do undergo technical and editorial review. Copyright...iridescence in metamorphic “rainbow” hematite from Brazil. The authors use electron microscopy, atomic force...The nature of these broad bands is unclear, as they do not occur in all diamonds showing high concentrations...concentrations of 3107 cm–1 defects, but they also do not occur in diamonds without H-related defects. It is possible |  | | Journal (issue) | | HPHT-Grown Synthetic Diamonds Diamonds from the Letšeng Mine Fall 2015 VOLUME 51, No. 3 EDITORIAL 221 Trapiche...red rutile • Rare “star and cross” quartz from Brazil • Serpentine cabochon with olive-green color •...Micro-World entries are not peer-reviewed sections but do undergo technical and editorial review. Copyright...this method. Meanwhile, Lesotho’s Letšeng-la-Terae mine is currently enjoying a renaissance. Rising prices...the emerald gastropods extracted from the Matecaña mine in Gachalà (Vuillet et al., 2002) and the famous |
|
