 | 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...Abstract: The Proterozoic Vazante zinc silicate district in Minas Gerais, Brazil, hosts world-class hypogene...by precipitation of minor sphalerite and then hematite and willemite. Elements commonly enriched in the |  | | 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 |  | 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 |  | | 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) |  | 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 |  | 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) | | veins and irregular pipes of willemite-(sphalerite-hematite-manganese–rich minerals) and stratiform nonsulfide...Torlon, Guatemala; 11 = Accha, Peru; 12 = Vazante, Brazil; 13 = Tynagh and Silvermines, Ireland; 14 =...Qiandong Shen Shen 689 New York, USA Brazil Balmat Vazante Hypogene nonsulfide zinc Isa/sedex VMS...bedded dolostone by smithsonite with minor hematite. Tucson mine, Leadville district, Colorado, United States...Massive smithsonite replacing limestone. Wolftone mine, Colorado, United States. c. Coarsely crystalline |  | | 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 |  | | 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)...northern Brazil is older. It contains the worlds' largest iron ore reserve (18 billion tons of hematite), and...metamorphosed Caraíba deposit, Curaçá Valley, Bahia, Brazil. This is an unusual, strongly deformed copper deposit |  | | 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 |  | Oliver, Nicholas H.S., Thomson, Brian, Freitas-Silva, Flavio H., Holcombe, Rodney J., Rusk, Brian, Almeida, Bruna S., Faure, Kevin, Davidson, Garry R., Esper, Eldrick L., Guimarães, Paulo J., Dardenne, Marcel A. (2015) Local and Regional Mass Transfer During Thrusting, Veining, and Boudinage in the Genesis of the Giant Shale-Hosted Paracatu Gold Deposit, Minas Gerais, Brazil. Economic Geology, 110 (7) 1803-1834 doi:10.2113/econgeo.110.7.1803 | Journal (article/letter/editorial) | | Giant Shale-Hosted Paracatu Gold Deposit, Minas Gerais, Brazil* Nicholas H.S. Oliver,1,2,† Brian Thomson...Andar, Cruzeiro, Belo Horizonte – MG 30130-009, Brazil 4 Instituto 5 School de Geociências, Universidade...Universidade de Brasília, Brasília DF, 70910-900, Brazil of Earth Sciences, University of Queensland, St Lucia...understand the genesis of the Paracatu deposit in Brazil, a shallow-dipping, bulk-tonnage, vein-style low-grade...thrusting. Introduction The Paracatu gold deposit in Brazil, also known as Morro do Ouro (“Hill of Gold”), |  | Misi, Aroldo, Kaufman, Alan J., Veizer, Jàn, Powis, Kelli, Azmy, Karem, Boggiani, Paulo Cesar, Gaucher, Claudio, Teixeira, João Batista G., Sanches, Andreia L., Iyer, Sundaram S.S. (2007) Chemostratigraphic correlation of Neoproterozoic successions in South America. Chemical Geology, 237 (1) 143-167 doi:10.1016/j.chemgeo.2006.06.019 | Journal (article/letter/editorial) | | Geociências, Campus da Federação, 40170-290 Salvador-BA, Brazil b Department of Geology, University of Maryland...Geociências, Universidade de São Paulo, São Paulo, Brazil g Facultad de Ciencias, Departamento de Paleontologia...Naturais, Universidade Estadual do Sudoeste da Bahia, Brazil i Department of Physics and Astronomy, University...including important nonferrous base metal deposits in Brazil (Misi et al., 1998), and broadly equivalent intervals...including the Cuiabá Group (Paraguay Belt), Ibiá and Vazante groups (Brasília Fold Belt), Miaba, Canudos and |  | Geboy, Nicholas J., Kaufman, Alan J., Walker, Richard J., Misi, Aroldo, de Oliviera, Tolentino Flavio, Miller, Kristen E., Azmy, Karem, Kendall, Brian, Poulton, Simon W. (2013) Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil. Precambrian Research, 238. 199-213 doi:10.1016/j.precamres.2013.10.010 | Journal (article/letter/editorial) | | of Proterozoic glacial deposits in the Vazante Group, Brazil Nicholas J. Geboy a,∗ , Alan J. Kaufman...40170-290, Salvador, Bahia, Brazil e Independent Consultant, Rio de Janeiro, RJ, Brazil f Massachusetts Institute...2013 Available online 23 October 2013 Keywords: Vazante Group Mesoproterozoic glaciation Re–Os geochronology...an organic-rich shale horizon from the Vazante Group in Brazil, coupled with geological observations,...geochemical and stratigraphic evidence suggest that the Vazante Group sediments accumulated along a passive margin |  | 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) | | formal description of the mineral from the Altenberg mine (Moresnet, 69 Belgium) and he named the new mineral...structurally- 78 controlled hypogene deposits are Vazante (Brasil), Beltana (Australia), Kabwe (Zambia) ...by haloes of hydrothermal Fe-dolomite and 81 hematite. The best examples of stratiform hypogene zinc...the re-interpretation) of deposits like Beltana, Vazante, Berg Aukas and 90 Kabwe, where metamorphic grade...Sterling Hill (USA; Johnson et al., 1990), Vazante (Brazil; Monteiro et al., 110 1999; Olivo et al. |  | | Report (issue) | | Reconnaissance geologic study of the Vazante zinc district, Minas Gerais, Brazil, by Charles H. Thorman and Samir...nodules, shale is laminated. Laminated shale, hematite pseudomorphs after pyrite. ----_- —— ___ __...general term. Locally vermiculite, chlorite, hematite, and celadonite replace volcanic detritus (table...rock fragments are altered to iron oxides (mostly hematite) and clay minerals (dominantly chlorite and illite)...extent by quartz, illite, chorite, celadonite, hematite, vermiculite, and smectite. The rare zeolite, |  | 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) | | hightemperature zinc silicate deposits (e.g., Vazante in Brazil (Monteiro et al. 2006) or Beltana in Australia...inverted during the Tertiary (Leblanc 1968). At the mine, the bedding is steep to vertical and even overturned...rm platfo L. 50 125 250 km L. 25 Level 0 b Mine dumps l1-2m l1 b Karst cavities l4 l3 l2m ...covered by Lower Jurassic rocks (l1 to l4). The mine, made up of four levels (from level 0 to level 100)...samples of black ore were collected in the different mine levels and cut to prepare a set of 30 polished thin |  | | Journal (article/letter/editorial) | | and associated with brecciation and extensive hematite-rich hydrothermal zincian dolomitization. Ore...9 percent Zn (Reynolds et al., 2003) and Vazante in Brazil (predominantly hypogene willemite and sphalerite)...deposit in Australia, has many similarities to Vazante in Brazil and Kabwe in Zambia (Hitzman et al., 2003)... Callanna Beds (Diapir) Mt Painter Province X Mine (willemite) Willemite deposits Other mineral occurrence...Formation Siltstone Aroona LEIGH CK Intense Hematite/Dolomite Altered Limestone/Dolomite Wilkawillina |  | 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) | | deposits include the Flinders Ranges (Australia), Vazante (Brazil), and Berg Aukas (Namibia). Whereas the origin...sulfide Zn-Pb deposits in the Bambuí basin in eastern Brazil, which show that the two deposit types share a...Aroona trend. His results showed that more intense hematite alteration is correlated with lower δ18O and higher...temperatures of formation of 200° to 260°C for willemite-hematite, 250°C for quartzwillemite, and 210°C for quartz-calcite...Zn-Pb deposits in the Bambuí basin, Brazil—including the Vazante deposit, which is currently the largest |  | | Journal (article/letter/editorial) | | Schaffalitzky, 2001, Boland et al., 2003; Vazante, Brazil: Monteiro et al., 1999; Beltana, Australia:...marked brecciation (e.g., Beltana, Australia; Vazante, Brazil). This type of mineralization is considered...Furthermore, there are additional nongeologic resources in mine dumps, flotation tailings, and smelter residues...nonsulfide Zn open-pit mine of Boleslaw, Poland. c. “Calamina” sample from the old Czerna mine, Poland. The sample...Selected Examples of European Nonsulfide Zinc Deposits Mine (district) Country Production history Style of |  | Trindade, Ricardo I.F, D’Agrella-Filho, Manoel S, Babinski, Marly, Font, Eric, Brito Neves, Benjamim B (2004) Paleomagnetism and geochronology of the Bebedouro cap carbonate: evidence for continental-scale Cambrian remagnetization in the São Francisco craton, Brazil. Precambrian Research, 128 (1) 83-103 doi:10.1016/j.precamres.2003.08.010 | Journal (article/letter/editorial) | | Cambrian remagnetization in the São Francisco craton, Brazil Ricardo I.F. Trindade a,∗ , Manoel S. D’Agrella-Filho...Paulo, Rua do Matão, 1226, 05508-090 São Paulo, Brazil b Centro de Pesquisas Geocronológicas, Instituto...São Paulo, Rua do Lago, 562, 05508-080 São Paulo, Brazil LMTG/OMP, UMR CNRS #5563, Université Paul-Sabatier...Amazon (AC) and the São Francisco (SFC) cratons in Brazil. of δ13 C increase upwards, with a mean value...phases, namely monoclinic pyrrhotite, magnetite and hematite, as the carriers of the more stable B, C, and |  | | Journal (article/letter/editorial) | | ore deposits (e.g., Franklin, New Jersey; Vazante, Brazil; Beltana, South Australia; Kabwe, Zambia)....sulfide deposits. However, recent data on the Vazante, Beltana, and Kabwe deposits indicate willemite...sphalerite will precipitate under oxidizing (e.g., hematite-stable, sulfate-predominant) and alkaline (pH...Callanna Group. The orebody is associated with hematite alteration and is characterized by the total absence...sulfide by the precipitation of ferrous iron as hematite, resulting in the precipitation of sphalerite |  | | Report (issue) | | DEPOSITS CF THE VAZAi'JTE-AREA, iilKAS G3RAIS, BRAZIL Samuel L 0 Moore This study was undertaken as...Calsnine Copper veins Willemite * Smithsonite Hematite « 10 11 12 12 12 13 Fig. 1 o 2 > , - Shotting...structural cross sections of Vasarite sreai T-S.nas Gerais KLate U A sketch map showing mineralised faixLt...norihfc?G3tcssi part of the state of JSnas Gerais. Brazil. The Vasante area can be reached "07 reads... Einan Gorajs* and south from Paracatu,. l&nas Gerais. The deposit is in branchings Btib^parallel fault |  | 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) | | willemite. Willemite is associated with specular hematite and franklinite and post-dates the Zn-spinel gahnite...carbonate-hosted economic willemite deposits (Vazante, Brazil, ca. 28.5 Mt @ 18% Zn; Berg Aukas and Abenab...hydrothermal fluids is preferred under oxidizing (hematite-stable) conditions at neutral to basic pH, low...willemite is paragenetically associated with specular hematite. Willemite occurs in both deposits as low-tonnage...limestone and then by coarse marbles overlain by hematite-rich dolomite. In the western wall of the pit |  | | Book | | Alkmim Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent Regional...Alkmim • Editors São Francisco Craton, Eastern Brazil Tectonic Genealogy of a Miniature Continent 123...Janeiro Maracanã, Rio de Janeiro Brazil Fernando F. Alkmim Escola de Minas Universidade Federal de Ouro...Preto Ouro Preto Brazil Umberto G. Cordani Universidade de São Paulo São Paulo Brazil ISSN 2364-6438...significant contributor to the mining industry in Brazil. This book provides a state of knowledge overview |  | | Report (volume) | | Deposits of the Boquira District State of Bahia, Brazil GEOLOGICAL SURVEY BULLETIN 3 Prepared in cooperation...the Departamento National da Producao Mineral, Brazil, under the auspices of the International Cooperation...Deposits of the Boquira District State of Bahia, Brazil By ROBERT F. JOHNSON CONTRIBUTIONS TO BRAZILIAN...the Departamento Nacional da Producdo Mineral, Brazil, under the auspices of the International Cooperation...map and section of the Boquira district, Bahia Brazil.___________________________________________ In |
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