 | Olivo, Gema, Monteiro, Lena, Baia, Fernando, Slezak, Paul, Carvalho, Igor, Fernandes, Neil, Oliveira, Gustavo, Botura Neto, Basilio, McGladrey, Alexandra, Silva, Adalene, Moura, Márcia, Layton-Matthews, Daniel (2018) The Proterozoic Vazante Hypogene Zinc Silicate District, Minas Gerais, Brazil: A Review of the Ore System Applied to Mineral Exploration. Minerals, 8 (1) 22 doi:10.3390/min8010022 | Journal (article/letter/editorial) | | Review The Proterozoic Vazante Hypogene Zinc Silicate District, Minas Gerais, Brazil: A Review of the Ore...05508-010, Brazil; lena.monteiro@usp.br Nexa Resources, Vazante 38780-000, Minas Gerais, Brazil; fernando...Brasília, Brasília 70910-900, Federal District, Brazil; igor@gfgeo.com.br (I.C.); adalene@unb.br (A.M...Proterozoic Vazante zinc silicate district in Minas Gerais, Brazil, hosts world-class hypogene willemite deposits...deposited in subtidal to supratidal environments. Willemite ore bodies are structurally controlled along regional |  | | Journal (article/letter/editorial) | | in the Southern Part of the Proterozoic Vazante Group, Brazil: Implications for Exploration of Sedimentary-Hosted...in the Southern Part of the Proterozoic Vazante Group, Brazil: Implications for Exploration of Sedimentary-Hosted...IN THE SOUTHERN PART OF THE PROTEROZOIC VAZANTE GROUP, BRAZIL: IMPLICATIONS FOR EXPLORATION OF SEDIMENTARY-HOSTED...sedimentary basins. In Brazil, the main zinc deposits are hosted in the Proterozoic Vazante Group in the Brasília...(MASA, Vazante and North Extension mines; Monteiro et al., 2006 and Slezak et al., 2014). The Vazante and |  | de Abreu Cunha, Ioná, Misi, Aroldo, Babinski, Marly, Iyer, Sundaram Sankara S. (2007) Lead isotope constraints on the genesis of Pb–Zn deposits in the Neoproterozoic Vazante Group, Minas Gerais, Brazil. Gondwana Research, 11 (3) 382-395 doi:10.1016/j.gr.2006.02.008 | Journal (article/letter/editorial) | | Pb–Zn deposits in the Neoproterozoic Vazante Group, Minas Gerais, Brazil Ioná de Abreu Cunha a , Aroldo Misi...Universidade Federal da Bahia, Salvador, BA 40210-340, Brazil Centro de Pesquisas Geocronológicas, Instituto...Rua do Lago, 562, São Paulo, CEP 05508-080, SP, Brazil c Department of Physics and Astronomy, University...Neoproterozoic Vazante Group at the western border of the São Francisco Craton, Brazil, hosts the largest...from four deposits located along the 300 km N–S Vazante–Paracatu–Unai linear trend. Pb isotope ratios indicate |  | Monteiro, Lena Virgínia Soares, Bettencourt, Jorge Silva, Juliani, Caetano, de Oliveira, Tolentino Flávio (2007) Nonsulfide and sulfide-rich zinc mineralizations in the Vazante, Ambrósia and Fagundes deposits, Minas Gerais, Brazil: Mass balance and stable isotope characteristics of the hydrothermal alterations. Gondwana Research, 11 (3) 362-381 doi:10.1016/j.gr.2006.04.017 | Journal (article/letter/editorial) | | mineralizations in the Vazante, Ambrósia and Fagundes deposits, Minas Gerais, Brazil: Mass balance and stable...Pandiá Calógeras, 51, CEP 13083-970, Campinas, SP, Brazil b Instituto de Geociências, Universidade de São...Paulo, SP, Brazil c Votorantim Metais, Caixa Postal 3, CEP 38780-000, Vazante, MG, Brazil Received 31...online 9 August 2006 Abstract The Vazante Group hosts the Vazante nonsulfide zinc deposit, which comprises...with the metalliferous fluid (e.g. Ambrósia). At Vazante, hydrothermal alteration resulted in silicification |  | Misi, Aroldo, Iyer, Sundaram S.S., Coelho, Carlos Eduardo S., Tassinari, Colombo C.G., Franca-Rocha, Washington J.S., Cunha, Ioná de Abreu, Gomes, Adriana S. Rocha, de Oliveira, Tolentino Flávio, Teixeira, João Batista G., Filho, Valter Mônaco C. (2005) Sediment hosted lead–zinc deposits of the Neoproterozoic Bambuí Group and correlative sequences, São Francisco Craton, Brazil: A review and a possible metallogenic evolution model. Ore Geology Reviews, 26 (3) 263-304 doi:10.1016/j.oregeorev.2004.12.004 | Journal (article/letter/editorial) | | and correlative sequences, São Francisco Craton, Brazil: A review and a possible metallogenic evolution...Universidade Federal da Bahia, Salvador, BA 40170-290, Brazil b Curso de Pós-Graduação em Geologia, Instituto...Geociências, Universidade Federal da Bahia, Salvador, BA, Brazil c Department of Physics and Astronomy, University...Brasileiro S.A., PETROBRAS-CENPES, Rio de Janeiro, RJ, Brazil e Centro de Pesquisas Geocronológicas, Instituto...Paulo, SP, Brazil f Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil g Centro de |  | | Report (issue) | | RECONNAISSANCE GEOLOGIC STUDY OF THE VAZANTE ZINC DISTRICT, MINAS GERAIS, BRAZIL By Charles H. Thorman, U. S...Recursos Minerals Ministry of Mines and Energy, Brazil LIBRARY AUG1 1 1977 DENVER The project report...~ ~- ~~~ ~~ __ n 2. Geologic map of the Vazante district in pocket 3. Geologic cross sections...medium-bedded limestone underlying cuesta southeast of Vazante 11. 13 Photograph of isolated hill underlain... RECONNAISSANCE GEOLOGIC STUDY OF THE VAZANTE ZINC DISTRICT, MINAS GERAIS, BRAZIL by Charles H. Thorman, U.S. Geological |  | Hitzman, M. W., Reynolds, N. A., Sangster, D. F., Allen, C. R., Carman, C. E. (2003) Classification, Genesis, and Exploration Guides for Nonsulfide Zinc Deposits. Economic Geology, 98 (4) 685-714 doi:10.2113/gsecongeo.98.4.685 | Journal (article/letter/editorial) | | bodies. The structurally controlled bodies contain willemite and variable amounts of sphalerite, are hematitic...three categories: calamine-dominant deposits, willemite-dominant deposits, and hydrated zinc silicate...deposits consisting of veins and irregular pipes of willemite-(sphalerite-hematite-manganese–rich minerals)...Torlon, Guatemala; 11 = Accha, Peru; 12 = Vazante, Brazil; 13 = Tynagh and Silvermines, Ireland; 14 =...and in Morocco (Guillaume and Gaudefroy, 1959), willemite is a common trace mineral in well-developed leached |  | | Journal (article/letter/editorial) | | Geochemistry of Galenas from the Bambui Group, Minas Gerais- Brazil S. S. Iyer Departamento de Processos Especiais...S~o Paulo, Brazil Abstract. Lead isotope data on galenas from the Bambui group, Minas Gerais have been...distribution of lead isotope ratios shows a zonation in Vazante Paracatu region, an area containing large deposits...an area of more than 400,000 Sq. Km. in central Brazil (Almeida et al., 1976). This group contains major...Valley, which includes part of the State of Minas Gerais, Bahia and Goias (Fig. 1 of Cassedanne, 1973) |  | | Journal (article/letter/editorial) | | ISOTOPEGEOCHEMISTRY OF GALENASFROMTHE BAMBU[GROUP, MINAS GERAIS, BRAZIL--IMPLICATIONS FOR ORE GENESIS S.S. IYE•...Nucleares (CNEN/SP)CaixaPostal11049,Pinheiros, SdoPaulo,Brazil J. HOEFS, Geochemisches Institut,der Universitat...sedimento Castaryrocksof the Bambu•group,MinasGerais,Brazil, Costa(1986),andDresch(1987).According are currentlybeingstudied...the lead and sulfurisotopegeochemistry of The Vazante-Paracatu regioncontainsalmostthe thegalenaandb...fororegen- total lead-zinc reserves of the state of Minas Gerais al., 1966, 1974; Sasakiand Krouse, 1969; Doe |  | | Journal (article/letter/editorial) | | mineralization in the Proterozoic Vazante – Paracatu District, Brazil: Implications for metallogeny and...Keywords: Sediment-hosted Zn Mesoproterozoic Upper Vazante Sequence Lithogeochemistry Mineral chemistry Metallogeny...Metallogeny The Mesoproterozoic Upper Vazante Sequence is a mixed carbonate – siliciclastic marine succession...silicate and Zn – Pb sulfide deposits in central Brazil. Carbonate-hosted Zn ± Pb mineralization is interpreted...Zn-deposits and occurrences in the 250 km – long Vazante – Paracatu District are underlain by the Serra |  | Choulet, Flavien, Barbanson, Luc, Buatier, Martine, Richard, James, Vennemann, Torsten, Ennaciri, Aomar, Zouhair, Mohamed (2017) Characterization and origin of low-T willemite (Zn2SiO4) mineralization: the case of the Bou Arhous deposit (High Atlas, Morocco) Mineralium Deposita, 52 (7) 1085-1102 doi:10.1007/s00126-016-0675-7 | Journal (article/letter/editorial) | | ARTICLE Characterization and origin of low-T willemite (Zn2SiO4) mineralization: the case of the Bou...Springer-Verlag Berlin Heidelberg 2016 Abstract Willemite (Zn2SiO4) usually reported in hypogene non-sulfide...observations, it was possible to establish that willemite replaces primary sphalerite. On the basis of cathodoluminescence...of willemite are distinguished, with evidence of dissolution–reprecipitation processes. Willemite is...the primary sulfide minerals. Depending on the willemite generation, this substitution was positively or |  | | Journal (article/letter/editorial) | | min6ralisations de la zone Itacarambi--Vazante dans le Nord-Ouest de l'6tat de Minas Gerais-Br6sil j . P. CASSEDANNE...occurs in the Sho Francisco River valley of central Brazil, with carbonate formations showing varied microfacies...darts le N o r d - O u e s t de l ' E t a t de Minas Gerais. Apr6s un bref rappel des principales caract4ristiques...de I ' W S W de la capitale de l ' E t a t de Minas Gerais au Sud, ~ l'extr~mit6 septentrionale de l '... Pal6ogfographie et min4ralisations de la zone Itacarambi-Vazante La sddimentation, trhs homog6ne Al'4chelle du bassin |  | Schneider, Jens, Boni, Maria, Laukamp, Carsten, Bechstädt, Thilo, Petzel, Volker (2008) Willemite (Zn2SiO4) as a possible Rb–Sr geochronometer for dating nonsulfide Zn–Pb mineralization: Examples from the Otavi Mountainland (Namibia) Ore Geology Reviews, 33 (2) 152-167 doi:10.1016/j.oregeorev.2006.05.012 | Journal (article/letter/editorial) | | 152 – 167 www.elsevier.com/locate/oregeorev Willemite (Zn2SiO4) as a possible Rb–Sr geochronometer for...online 6 August 2007 Abstract The zinc silicate willemite (Zn2SiO4) is the main carrier of zinc in a number...of hypogene–hydrothermal origin. The timing of willemite mineralization in these deposits is only poorly...poorly constrained. In this pilot study, willemite has been evaluated as a potential Rb–Sr geochronometer...deposits. We have analyzed samples of economic-stage willemite from the Berg Aukas and Abenab West deposits, |  | Mondillo, Nicola, Accardo, Mariafrancesca, Boni, Maria, Boyce, Adrian, Herrington, Richard, Rumsey, Mike, Wilkinson, Clara (2020) New insights into the genesis of willemite (Zn2SiO4) from zinc nonsulfide deposits, through trace elements and oxygen isotope geochemistry. Ore Geology Reviews, 118. 103307 doi:10.1016/j.oregeorev.2019.103307 | Journal (article/letter/editorial) | | Journal Pre-proofs New insights into the genesis of willemite (Zn2SiO4) from zinc nonsulfide deposits, through... Wilkinson, New insights into the genesis of willemite (Zn2SiO4) from zinc nonsulfide deposits, through...Elsevier B.V. 1 New insights into the genesis of willemite (Zn2SiO4) from zinc 2 nonsulfide deposits, through...East Kilbride Scotland 1 19 Abstract 20 Willemite is a common mineral mainly occurring in the so-called...comprehensive compilation of 23 geochemical data on willemite is currently lacking, the aim of this study is |  | | Journal (article/letter/editorial) | | 201-C, Salvador, 40170-290, Bahia, Brazil b Geological Survey of Brazil (CPRM)-Av. Pasteur, 404, Urca, Rio...Rio de Janeiro, 22290-240, Rio de Janeiro, Brazil Received 2 May 2004; accepted 1 May 2006 Available...from Venezuela (Imataca Complex), and others from Brazil (Quadrilátero Ferrífero, Itabira, and Guanhães)...mentioning that the Serra dos Carajás Basin in northern Brazil is older. It contains the worlds' largest iron...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit |  | Harkins, S. A., Appold, M. S., Nelson, B. K., Brewer, A. M., Groves, I. M. (2008) Lead Isotope Constraints on the Origin of Nonsulfide Zinc and Sulfide Zinc-Lead Deposits in the Flinders Ranges, South Australia. Economic Geology, 103 (2) 353-364 doi:10.2113/gsecongeo.103.2.353 | Journal (article/letter/editorial) | | fluids in which the dominant zinc mineral is willemite (Zn2SiO4). Important examples of supergene nonsulfide...deposits include the Flinders Ranges (Australia), Vazante (Brazil), and Berg Aukas (Namibia). Whereas the origin...primary zinc mineralization occurs chiefly as willemite and as a hematitic and zincian dolomite alteration...deposits (Groves et al., 2003). In the Aroona trend, willemite occurs in three main forms. The earliest form...-00 $6.00 and white willemite. The third type is a white crustiform willemite that occurs in colloform |  | | Journal (article/letter/editorial) | | Proterozoic SedimentHosted Pb-Zn (Ag) Deposits of Brazil Aroldo Misi’, Sundaram S. Iyer2, Colombo C. G....Universidade Federal da Balzia, Salvador; BA 40210-340, Brazil, E-Mail: rnisi@ujlm.br Department of Physics arid...Universiclade de SZo Paulo, SZo Pado, Sdo Paulo, 05422-970, Brazil Department of Geological Sciences, The University...UtiiverrridadeFederal da Baftia, Salvador; Bahia, 40210-340, Brazil Curso de Po’s-Graduagdo enz Geoquiniica, Itistituto...Federal da Bahia, Salvador; Balzia, 40210-340, Brazil (Mciizuscriptrsceiwrl Deceinlzer 12, 1997; accepted |  | | Journal (article/letter/editorial) | | 98, 2003, pp. 797–818 Geology of the Beltana Willemite Deposit, Flinders Ranges, South Australia IAIN...Australia Abstract Beltana is a high-grade hypogene willemite deposit hosted in Lower Cambrian carbonate rocks...in karstic collapse breccias surrounding the willemite orebodies. Mineralization is structurally controlled...zincian dolomitization. Ore minerals include willemite and coronadite with lesser mimetite, hedyphane...manganocalcite, dolomite, and minor quartz. The texture of willemite is heterogeneous, resulting from various depositional |  | | Journal (article/letter/editorial) | | redeposition, and preservation under glacial till. The willemite-dominated mineralization at La Calamine, Belgium...possible hydrothermal origin, similar to other willemite deposits in the world. Introduction PRIOR to...Schaffalitzky, 2001, Boland et al., 2003; Vazante, Brazil: Monteiro et al., 1999; Beltana, Australia:...collectors are also present. Group II deposits are willemite-dominated deposits in Late Proterozoic to Early...marked brecciation (e.g., Beltana, Australia; Vazante, Brazil). This type of mineralization is considered |  | | Journal (article/letter/editorial) | | Geology Vol. 98, 2003, pp. 819–835 Formation of Willemite in Hydrothermal Environments JOËL BRUGGER,† Department...University, Victoria 3800, Australia Abstract Willemite (zinc silicate) is the main zinc mineral in some...ore deposits (e.g., Franklin, New Jersey; Vazante, Brazil; Beltana, South Australia; Kabwe, Zambia)....most metallogenic studies proposed formation of willemite deposits by supergene or hypogene alteration of...However, recent data on the Vazante, Beltana, and Kabwe deposits indicate willemite crystallization at temperatures |  | Boni, Maria, Terracciano, Rosario, Balassone, Giuseppina, Gleeson, Sarah A., Matthews, Alexander (2011) The carbonate-hosted willemite prospects of the Zambezi Metamorphic Belt (Zambia) Mineralium Deposita, 46 (7) 707-729 doi:10.1007/s00126-011-0338-7 | Journal (article/letter/editorial) | | 1007/s00126-011-0338-7 ARTICLE The carbonate-hosted willemite prospects of the Zambezi Metamorphic Belt (Zambia)...2011 # Springer-Verlag 2011 Abstract Zambian willemite (Zn2SiO4) deposits occur in the metasedimentary...located around Kabwe and contain both sulphides and willemite in dolomites of low metamorphic grade. The Star...Arc and the Zambezi Belt). In both prospects, willemite replaces the marbles and is found along joints...germanium and cadmium have been detected within the willemite ore, and lead or zinc sulphides are scarce or |  | | Report (issue) | | Reconnaissance geologic study of the Vazante zinc district, Minas Gerais, Brazil, by Charles H. Thorman and Samir...A——A' Line of diagrammatic section ^ WASATC H Coal mine 114° 42° 110° PLATEAU 40' UTAH STUDY AREA 38°...example, the upper coal bed mined in the abandoned mine in Muddy Canyon (fig. 1), referred to as the Muddy...The coal bed mined in the abandoned Link Canyon mine (fig. 1), identified by Doelling (1972) as the Upper...study area with those of the Southern Utah Fuel Co. mine in Convulsion Canyon, 14 km to (the southwest, are |  | | Journal (issue) | | Williams; Present Mine, Manager, New Jersey Zinc Company - "The Sterling Hill Mine Today". Sunday, May...of the great names in the history of the Franklin Mine — Clarence M. Haight, Superintendent from 1928 to...key officials in the successful operation of the Mine for many years until its closing in 1954. After...Shaft hoist house, the old change house, the old mine office and a couple of smaller buildings near the...surviving miners and to save historical locations on Mine Hill. The establishment of the Franklin Mineral |  | Araújo, Daniel F., Boaventura, Geraldo R., Machado, Wilson, Viers, Jerome, Weiss, Dominik, Patchineelam, Sambasiva R., Ruiz, Izabel, Rodrigues, Ana Paula C., Babinski, Marly, Dantas, Elton (2017) Tracing of anthropogenic zinc sources in coastal environments using stable isotope composition. Chemical Geology, 449. 226-235 doi:10.1016/j.chemgeo.2016.12.004 | Journal (article/letter/editorial) | | CE P Asa Norte, Brasília, Distrito Federal, Brazil. b. Géosciences Environnement Toulouse (GET—UMR...Campus do Valonguinho, Niterói, Rio de Janeiro, Brazil. d. Imperial College London, Earth Science and...Rua do Lago 562, Cidade Universitária, São Paulo, Brazil. 1-Corresponding author: Daniel F. Araújo: danielunb...collected at the Sepetiba Bay IP (southeastern Brazil), an estuarine lagoon heavily impacted by metallurgic...isotopic signatures were compared with those from willemite ore, which represent the main mineral refined |  | Coppola, Vito, Boni, Maria, Gilg, H. Albert, Balassone, Giuseppina, Dejonghe, Léon (2008) The “calamine” nonsulfide Zn–Pb deposits of Belgium: Petrographical, mineralogical and geochemical characterization. Ore Geology Reviews, 33 (2) 187-210 doi:10.1016/j.oregeorev.2006.03.005 | Journal (article/letter/editorial) | | hydrozincite) and Zn silicates (hemimorphite, willemite and Zn clays), with a variable content of Pb minerals...paleoweathering in Europe. The extensive occurrence of willemite, that appears to be the first deposited nonsulfide...Belgian “calamines”. Most fluid inclusions in willemite (80%) and all inclusions in smithsonite are monophase...rare two-phase inclusions (liquid + vapor) in willemite display a large variation between 80 and 190°...interval matching the temperature ranges of other willemite ores throughout the world, so far considered of |
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