Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / This research is the result of a survey mostly conducted in Lagamar - MG to detect the opinion of people who are directly and indirectly involved with the city both in the countryside and in town. The work aims at showing the definition of Large Projects in the conception of different authors, and the definition of Territory and the changes caused due to the installation of Galvani Miner in Lagamar in 1996. The concepts used gave theoretical support to the understanding of the effects of large investments from several points of view. The impacts on the city will be revealed, both on social/economic issues and changes on space. A historical and geographical survey of Lagamar is presented, and the main concerns of the population about a possible end of the extraction and the changes to occur are focused as well. / Este trabalho é fruto de uma pesquisa realizada com maior concentração no município de Lagamar MG, no sentido de detectar a opinião das pessoas direta e indiretamente envolvidas com o município tanto no campo como na cidade. De acordo com os levantamentos realizados, o trabalho visa mostrar a definição de Grandes Projetos na concepção de diferentes autores, e a definição de Território e as transformações causadas com a instalação da mineradora Galvani no Município de Lagamar a partir do ano de 1996. Os conceitos utilizados deram suporte teórico para o entendimento dos efeitos provocados por grandes investimentos sob diversos pontos de vista. Serão mostrados os impactos provocados no município com a instalação da mineradora, tanto no que tange às questões econômicas e sociais como às mudanças no espaço. É apresentado um levantamento histórico e geográfico do Município de Lagamar, além de serem focalizadas as principais preocupações da população lagamarense quanto a um possível término da extração do município e as mudanças ocorridas. / Mestre em Geografia

The purpose of this article is to present the results of a survey that examined theimpact of external evaluations in teaching in public schools of micro-region of Ubá(MRUbá), Minas Gerais. The methodology included an investigation into threeschools, on-site observations, semi-structured interviews with teachers, literatureon the subject and qualitative data analysis. The «voices» that echoed the schoolssignaled to the logic of accountability, accountability, the pressure for results, the(dis) belief in IDEB, of aspects relating to competition, among others. The dataenabled us to realize that teachers are greatly affected by the current evaluationmodel, whose measurement mechanisms the blaming and also to school, besidesgenerating rankings that are increasingly reinforcing a competitive environment. / El objetivo de este trabajo es presentar los resultados de una investigación queanalizó el impacto de las evaluaciones externas en el trabajo docente en escuelas públicas de la microrregión de Ubá (MRUbá), Minas Gerais. En la metodología se incluyen la investigación realizada en tres escuelas, observaciones in loco, entrevistas semi-estructuradas con profesoras, la literatura sobre el tema y el análisis cualitativo de los datos. Las «voces» que resonaron de las escuelas señalaron a la lógica de la rendición de cuentas, de la responsabilidad, de la presión por resultados, de la (des)creencia en el IDEB, de los aspectos relativos a la competición, entre otros. Los datos nos posibilitaron darnos cuenta de que los profesores se ven muy perjudicados por el actual modelo evaluativo cuyos mecanismos de medición los culpabilizan a ellos y aún a las escuelas, además de generarse rankings que refuerzan cada vez más un ambiente competitivo. / O objetivo do artigo é apresentar os resultados de uma pesquisa que analisou oimpacto das avaliações externas no trabalho docente em escolas públicas damicrorregião de Ubá (MRUbá), Minas Gerais. A metodologia contou com uma investigação realizada em três escolas, observações in loco, entrevistas semiestruturadas com professoras, pesquisa bibliográfica sobre o tema e análisequalitativa dos dados. As «vozes» que ecoaram das escolas sinalizaram para a lógica da prestação de contas, da responsabilização, das pressões por resultados, da (des) crença no IDEB, dos aspectos relativos à competição, dentre outros. Os dados nos possibilitaram perceber que os professores são muito afetados pelo atual modelo avaliativo, cujos mecanismos de mensuração o culpabilizam e também à escola, além de gerarem rankings que estão cada vez mais reforçando um ambiente competitivo.

Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2017-01-12T10:34:50Z No. of bitstreams: 1 texto completo.pdf: 1542940 bytes, checksum: 587b357af091e7ba46474624dedfd015 (MD5) / Made available in DSpace on 2017-01-12T10:34:50Z (GMT). No. of bitstreams: 1 texto completo.pdf: 1542940 bytes, checksum: 587b357af091e7ba46474624dedfd015 (MD5) Previous issue date: 2004-07-30 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / O objetivo deste trabalho foi fazer uma análise da viabilidade técnica, econômica, social e ambiental da agrossilvicultura com eucalipto como uma alternativa para o desenvolvimento sustentável da Zona da Mata de Minas Gerais. A partir de um levantamento de informações do estado da arte do conhecimento e da prática da agrossilvicultura com eucalipto na Zona da Mata Mineira e de uma caracterização das condições ambientais e do uso da terra na região, definiu-se um modelo de sistema agroflorestal com eucalipto para a Zona da Mata mineira, com uma descrição detalhada do sistema. Neste sentido, o sistema agroflorestal modelizado (pecuária leiteira em sistema silvipastoril) e os seus componentes em sistema de monocultivo foram comparados quanto ao ambiente, produtividade física, por meio do índice de equivalência de área (IEA), e viabilidade econômica, por meio de uma análise financeira utilizando métodos de avaliação de projetos, como: valor presente líquido (VPL), valor anual equivalente (VAE), valor esperado da terra (VET), razão benefício/custo (B/C) e a taxa interna de retorno (TIR). Para tanto, considerou-se no presente estudo três atividades distintas: Sistema I (reflorestamento com eucalipto), Sistema II (pecuária leiteira convencional) e o Sistema III (Sistema Silvipastoril – eucalipto + pecuária leiteira). Os custos e as receitas foram estimados em Reais/ha. Por meio dos resultados obtidos verificou-se que o IEA total foi de 1,93, sendo 0,8 para o reflorestamento e 1,13 para a pecuária leiteira. Deste modo, 1 ha de consórcio equivaleria, neste caso, a 1,93 ha distribuídos entre as monoculturas de pastagem e eucalipto, com um ganho de quase 100% em área. Para todos os métodos de análise financeira utilizados, os três sistemas avaliados são economicamente viáveis. O maior VPL foi obtido com o sistema III (R$16.302,54), seguido do sistema I (R$7.223,94) e sistema II (R$6.015,27). O Sistema I apresentou a maior relação benefício/custo (3,24) enquanto a menor ficou com o Sistema II (1,28). O VET (R$25.482,97) e o VAE (R$1.904,62) foram maiores para o Sistema III, seguido do Sistema I (VET = R$12.224,86 e VAE = R$843,97) e II (VET = R$10.456,87 e VAE = R$702,76). Das atividades analisadas o Sistema II apresentou o maior TIR (52%), seguido do Sistema III e I, 27,5% e 24,8% respectivamente. Concluiu-se que, diante da caracterização dos diferentes ambientes encontrados na Zona da Mata Mineira, os sistemas silvipastoris (eucalipto + pecuária leiteira) são técnica, econômica, social e ambientalmente viáveis, indicando que o sistema silvipastoril com eucalipto representa uma alternativa para o desenvolvimento sustentável da região. / The present work had as objective to do a viability analysis of technical, economical, social and environmental aspect of the agroforestry system by using eucalypt as an alternative for the sustainable development of the Zona da Mata of Minas Gerais state. The data base used to do this work was set by putting together informations about the state of art of knowledge and practices about the agroforestry systems with eucalypt in the Zona da Mata mineira and by characterizing the environmental conditions and regional land use. This set of informations was used to define an agroforestry system model with eucalypt for the Zona da Mata mineira, by presenting a detailed description of the system, so that, the agroforestry system model proposed (livestock milk pan in silvipasture system) and their components in monocultural system were compared in relation to environment, physical productivity by using the equivalent index of area (IEA) and economical viability by using the financial analysis through the equivalent annual value (VAE), net present value (VPL), land expectation value (VET), benefit/cust ratio (B/C) and the internal rate of return (TIR), so that, it was considered at the present study three different activities: System I (Reforestation with eucalypt), System II (Livestock conventional milk pan) and the System III (Silvipasture system - Livestock milk pan + eucalyptus). The costs and revenue were estimated in R$/ha. By analyzing the results, it was verified that the IEA presented a total of 1.93, being 0.8 for the reforestation and 1.13 for the livestock milk pan. This way, 1 ha of consortium would be equivalent, in this case, to 1.93 ha distributed between the monoculture of pasture and of eucalypt with an earnings of almost 100% in area. For all the methods of financial analysis used the three appraised systems are economically viable. The largest VPL was obtained with the System III (R$16.302,54), followed by the System I (R$7.223,94) and System II (R$6.015,27). The System I presented the largest benefit/cust ratio (3,24), while the smallest ratio was with the System II (1,28). The VET (R$25.482,97) and VAE (R$1.904,62) were larger for the System III followed by the System I (VET = R$12.224,86 and VAE = R$843,97) and System II (VET = R$10.456,87 and VAE = R$702,76). Of the analyzed activities, the System II presented the largest TIR (52%), followed by the System III and I, 27,5% and 24,8% respectively. Due to the characterization of different environmental found at the Zona da Mata mineira, the silvipasture system (eucalypt + livestock milk pan) are technical, economical, social and environmentally viables, indicating that the silvipasture systems consortiated with eucalypt represents an alternative for sustainable development of this region.

Submitted by Reginaldo Soares de Freitas (reginaldo.freitas@ufv.br) on 2017-01-19T11:42:37Z No. of bitstreams: 1 texto completo.pdf: 3696642 bytes, checksum: 5c4a75755736a3f25242767daa788504 (MD5) / Made available in DSpace on 2017-01-19T11:42:37Z (GMT). No. of bitstreams: 1 texto completo.pdf: 3696642 bytes, checksum: 5c4a75755736a3f25242767daa788504 (MD5) Previous issue date: 2005-07-26 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Neste trabalho, foram pesquisados três dos oito municípios que compõem o Parque Estadual da Serra do Brigadeiro (PESB): Araponga, Fervedouro e Miradouro. O trabalho tem como objetivo avaliar a influência que o ecoturismo pode estar causando na paisagem, na economia, no meio ambiente e no meio sócio-cultural destas comunidades. Como instrumentos para a coleta dos dados foram desenvolvidos revisão literária acerca do tema, visitas aos locais estudados, onde foi possível realizar entrevistas semi-estruturadas com empreendedores do setor turístico, com uma parcela representativa dos atores sociais (comunidades locais) e também com os turistas. Foram utilizadas fotografias feitas com câmera digital para os registros e posterior análise dos aspectos paisagísticos e ambientais entre outros; e também mapas. Pelas entrevistas com os atores sociais, pode-se concluir que em Araponga, a comunidade se mostrou mais informada/envolvida em relação às questões ambientais, com os turistas e com empresários do setor; em Fervedouro o grau de envolvimento da comunidade se mostrou maior com relação ao meio ambiente e aos projetos de turismo; já em Miradouro, os atores sociais se mostraram mais informados com relação ao meio ambiente. Com relação aos turistas, pode-se dizer que 90% dos entrevistados estavam realizando atividades que se enquadram no segmento ecoturismo. A maioria dos entrevistados respondeu que tiveram conhecimento dos atrativos através da indicação de amigos. Araponga e Fervedouro têm sido os destinos mais procurados, sendo que em Araponga já existe um movimento mais constante tanto nos campings quanto em pousada. Em Fervedouro o acesso tem sido um grande problema para os empreendedores. A influência do ecoturismo nos municípios estudados ainda é pequena em função de a atividade estar se desenvolvendo lentamente, mas já pode ser notada. A paisagem tipicamente rural e serrana foi sendo alterada ao longo do tempo principalmente pelo uso do solo, nas culturas agrícolas. Nota-se uma grande preocupação entre os empresários do setor em manejar bem seus resíduos, em adequar os projetos à paisagem do entorno e em conservar seu maior atrativo: a natureza. / In this work, three of the eight municipalities that torn the Serra do Brigadeiro State Park (SBSP) were investigated: Araponga, Fervedouro and Miradouro. The objective of this work was to evaluate the effect of the ecologic tourism upon the landscape, on the economics, on the environment and on the social and cultural environment of these communities. As tools for data collection a literature review and visitation of the places studied were made and it was possible to carry out interviews partially structured with agents of the tourist sector, with a representative part of the social agents (local communities) and also with tourists. Computer camera photographies were done to register and later to analyse the landscape and environmental aspects among others as well as maps. From the interviews with the social agents it could be conclude that in Araponga the community showed to be more aware and involved in relation to the environmental issues, tourists and entrepreneurs of the sector. In Fervedouro the degree of involvement of the community showed to be bester in relation to the environment and tourism projects. Yet in Miradouro, the social agents showed to be more aware of the environment. Referring to the tourists it could be scid that 90% of the interviewed were involved in activities classified in the ecologic tourist sector. The interviewed individuals answered that they came to know about the attractions though indication of friends. Araponga and Fervedouro have been the most searched destinations and in Araponga a more constant move already exists both in camping s and inns. In Fervedouro the greater problem for the entrepreneurs has been the access. It can be observed that a great concern among the entrepreneurs is to manage well the residuals, to properly adapt the projects to the surrounding landscape and preserve their greatest attractive: Nature. The influence of ecologic tourism in the municipalities studied is still small due the slow development of this activity but it can already be noted. The typical rural and mountainous landscape has undergone changes along time mainly by the use of the land for agriculturist crops. / Não foi localizado o cpf do autor.

This study focuses on investigating the effect of the electronic spin transition of iron on the elasticity of the candidate lower mantle ferropericlase (Mg,Fe)O. This may be relevant to our understanding of the seismic velocity structures of the Earth’s lower mantle. The elastic constants of (Mg₀.₉₂Fe₀.₀₈)O at high-spin (HS) state, low-spin (LS) state, and through the pressure-induced HS-to-LS transition has been measured using both Brillouin Light Scattering (BLS) and Impulsive Stimulated Scattering (ISS). There is a large pressure range in which c₁₁ and c₁₂ exhibit a softening, while c₄₄ does not register such an anomaly. Compared with previously published data of ferropericlase with similar compositions ([Marquardt et al., 2009b], BLS measurement of (Mg₀.₉Fe₀.₁)O and [Crowhurst et al., 2008], ISS measurement of (Mg₀.₉₄Fe₀.₀₆)O), this study provides more reliable elastic constants measurements by taking the advantage of simultaneous measurements on Vp and Vs using both BLS and ISS. Our results show that bulk sound velocity of ferropericlase has a large but smooth softening in the spin transition pressure region. The elastic constants of ferropericlase at the spin transition region and the LS state have been well studied in this thesis, and a relaxation behavior has also been observed in this study. Those two subjects are not well documented in literature. The temperature effect of the spin state transition and its consequential effect on mineral’s elastic properties have not been studied in this project, but further research on this subject will follow. However, even in the room temperature, our results don’t show sudden changes in seismic velocities. Moreover, current theoretical and experimental studies [Sturhahn et al., 2005, Tsuchiya et al., 2006, Lin et al., 2007] indicate that the spin transition takes place over an extended range of depth along an expected lower-mantle geotherm, where sudden changes in compressional and bulk sound velocity are not expected. / text

Laser surface modification of AZ31B Magnesium alloy changes surface composition and roughness to provide improved surface bio-wettability. Laser processing resulted in phase transformation and grain refinement due to rapid quenching effect. Furthermore, instantaneous heating and vaporization resulted in removal of material, leading the textured surface generation. A study was conducted on a continuum-wave diode-pumped ytterbium laser to create multiple tracks for determining the resulting bio-wettability. Five different laser input powers were processed on Mg alloy, and then examined by XRD, SEM, optical profilometer, and contact angle measurement. A finite element based heat transfer model was developed using COMSOL multi-physics package to predict the temperature evolution during laser processing. The thermal histories predicted by the model are used to evaluate the cooling rates and solidification rate and the associated changes in the microstructure. The surface energy of laser surface modification samples can be calculated by measuring the contact angle with 3 different standard liquid (D.I water, Formamide, and 1-Bromonaphthalen). The bio-wettability of the laser surface modification samples can be conducted by simulated body fluid contact angle measurement. The results of SEM, 3D morphology, XRD, and contact angle measurement show that the grain size and roughness play role for wetting behavior of laser processing Mg samples. Surface with low roughness and large grain size performs as hydrophilicity. On the contrast, surface with high roughness and small grain size performs as hydrophobicity.

Magnesium alloys are the lightweight structural materials with high strength to weigh ratio that permits their application in fuel economy sensitive automobile industries. Among the several flavors of of Mg-alloys, precipitation hardenable Mg-rare earth (RE) based alloys have shown good potential due to their favorable creep resistance within a wide window of operating temperatures ranging from 150°C to 300°C. A key aspect of Mg-RE alloys is the presence of precipitate phases that leads to strengthening of such alloys. Several notable works, in literature, have been done to examine the formation of such precipitate phases. However, there are very few studies that evaluated the effect stress induced deformation on the precipitation in Mg-RE alloys. Therefore, the objective of this work is to examine influence of deformation on the precipitation of Mg-Nd based alloys. To address this problem, precipitation in two Mg-Nd based alloys, subjected to two different deformation conditions, and was examined via transmission electron microscopy (TEM) and atom probe tomography (APT). In first deformation condition, Md-2.6wt%Nd alloy was subjected to creep deformation (90MPa / 177ºC) to failure. Effect of stress-induced deformation was examined by comparing and contrasting with precipitation in non-creep tested specimens subjected to isothermal annealing (at 177ºC). In second condition, Mg-4.0Y-3.0Nd-0.5Zr (wt %) or WE43 alloy (with comparable Nd content as model Mg-Nd system) was subjected to hot rolling deformation at a sub-solvus temperature.

The objectives of these investigations were (1) the purification of MG reductase from sheep liver and (2) studies of some of its characteristics. MG reductase was purified 40 fold and showed a single band on SDS-PAGE. Molecular weight estimations with SDS-PAGE showed a molecular weight of 44,000; although gel filtration with Sephadex G-150 gave a molecular weight of 87,000 indicating that the enzyme might be a dimer. The Km for MG is 1.42 mM and for NADH it is 0.04 mM. The pH optimum for the purified enzyme is pH 7.0. Isoelectric focusing experiments showed a pI of 9.3. In vivo experiments involving rats treated with 3,3',5-triiodothyronine (T_3) and 6-n-propyl-2-thiouracil (PTU) indicated that MG reductase was depressed by T_3 and elevated by PTU.

<div>Atomistic simulations are used in this project to study the deformation mechanism of polycrystalline and bicrystal of pure Al and Al-Mg alloys. Voronoi Tessellation was used to create three-dimensional polycrystalline models. Monte Carlo and Molecular</div><div>Dynamics simulations were used to achieve both mechanical and chemical equilibrium in all models. The first part of the results showed improved strength, which is included the yield strength and ultimate strength in the applied tensile loading through the addition of 5 at% Mg to nanocrystalline aluminum. By viewing atomic structures, it clearly shows the multiple strengthening mechanisms related to doping in Al-Mg alloys. The strength mechanism of dopants exhibits as dopant pinning grain boundary (GB) migration at the early deformation stage. At the late stage where it is close to the failure of nanocrystalline materials, Mg dopants can stop the initiation of intergranular cracks and also do not let propagation of existing cracks along the GBs. Therefore, the flow stress will improve in Al-Mg alloy compared to pure Al. In the second part of our results, in different bicrystal Al model, Σ 3 model has higher strength than other models. This result indicates that GB structure can affect the strength of the material. When the Mg dopants were added to the Al material, the strength of sigma 5 bicrystal models was improved in the applied shear loading. </div><div><br></div><div>However, it did not happen for Σ 3 model, which shows Mg dopants cannot affect the behavior of this GB significantly. Analysis of GB movements shows that Mg dopants stopped GBs from moving in the Σ 5 models. However, in sigma 3 GBs, displacement of grain boundary planes was not affected by Mg dopants. Therefore, the strength and flow stress are improved by Mg dopants in Σ 5 Al GBs, not in the Σ 3 GB.</div>

A mineralização aurífera da mina São Bento, localizada na porção NE do Quadrilátero Ferrífero, Minas Gerais, foi estudada com métodos de campo e laboratoriais mineralógicos-petrográficos e geoquímicos, visando contribuir a petro-metalogênese desse depósito em ambientes greenstone belt arqueano. A mineralização ocorre no Grupo Nova Lima vulcano-sedimentar máfico estratigraficamente médio do greenstone belt arqueano Rio das Velhas (Supergrupo Rio das Velhas) em formações ferríferas bandadas (BIF) de tipo Algoma de fácies óxido com magnetita, carbonato, silicato, sulfeto e mistas. Levantamentos de campo e subsolo confirmam a atitude geral N30-35E/50-55SE do Grupo Nova Lima e sua subdivisão de mapeamento, na área do manifesto, em quatro unidades litoestratigráficas informais, de NW para SE designadas: Formação Ferrífera Inferior, Formação Grafitosa Basal, Formação Ferrífera São Bento e Formação Carrapato. A Formação Ferrífera São Bento, hospedeira da mineralização de ouro foi subdividida informalmente em Membro Ferrífero Basal, com até quatro horizontes mineralizados (Oeste, Middle, São Bento e Leste) e intercalações de BIF estéreis e xistos metapelíticos finos; e Membro Ferrífero do Topo, de BIF de fácies carbonato, óxido com magnetita e silicato. Todos os horizontes mineralizados são BIF de fácies sulfeto puras ou mistas, em proporções subordinadas variáveis, com fácies carbonato, óxido e silicato, apresentando correlação direta entre os teores de ouro e de sulfetos totais. Ouro e também todos os sulfetos, pirita, arsenopirita e pirrotita (principais) e esfarelita e calcopirita (subordinados) ocorrem em diversas gerações texturais e genéticas. Metamorfismo regional principal e tectônica causaram recristalização e deformação heterogênea nos sulfetos, como a concentração por segregação de cristais deformados de pirrotita, alongados e estirados na foliação. Diferentemente, pirita e arsenopirita ocorrem como cristais idioblásticos com bordas idiomórficas (sem inclusões) e partes internas ricas em inclusões de minerais de ganga, outros sulfetos e ouro, além de cristais idiomórficos (sem inclusões) neoformados; eventualmente, sofreram ainda processos rúpteis de fraturamento/quebra. O ouro ocorre principalmente como inclusões refratárias (\'< OU =\' 5\'mü\'m - \'< OU =\'10\'mü\'m) na pirita e arsenopirita (perfazendo ~ 80% do metal do minério lavrado) e como grãos mais grossos (\'> OU =\' 20\'mü\'m - 250 \'mü\'m) livres ou intercrescidos nos concentrados de pirrotitas deformadas, sugerindo crescimento acretivo dos grãos durante a remobilização com redistribuição e recristalização principalmente da pirrotita, mas também dos demais sulfetos com inclusões primárias de ouro. Entre as diferentes fácies de BIF não existem diferenças geoquímicas significativas para os óxidos maiores e os metais de transição V, Cr, Co, Ni, e Zn, os quais ainda demonstram similaridades à BIF de Isua. Os teores de ETR para os BIF de fácies carbonato, óxido e sulfeto são similares, apresentando teores totais baixos e fracionamento dos ETR leves, assim como pronunciadas anomalias negativas de Ce e positivas de Eu. A mineralização aurífera de São Bento é estratiforme e de origem sedimentar vulcano-exalativa distal (singenética), por suas características geológicas, petro-metalogenéticas e geoquímicas. Processos tectono-metamórficos e hidrotermais posteriores geraram principalmente efeitos mineralógico-texturais e estruturais. / The gold mineralization of the São Bento Mine in the NE of the Quadrilátero Ferrífero, Minas Gerais, was studied with field and mineralogicaI, petrographical and geochemical laboratory methods, aiming at a contribution to the petrogenesis and metallogenesis of this deposit in an Archean greenstone belt environment. The mineralization occurs in the volcano-sedimentary mafic Nova Lima Group, the middle unit of the Rio das Velhas greenstone belt stratigraphical succession (Rio das Velhas Supergroup), in Algoma-type banded iron formations (BIF) of oxyde-magnetite-, carbonate-, silicate-, sulphide- and mixed facies. Field and underground studies confirmed N30-35E/50-55SE as the major structural outline of the Nova Lima Group and its subdivision in the mining-area into four informal lithostratigraphical NE-trending mapping units from NW to SE, named: Lower Banded Iron Formation (Formação Ferrífera Inferior), Basal Graphitic Formation (Formação Grafitosa Basal), São Bento Iron Formation (Formação Ferrífera São Bento) and Carrapato Formation (Formação Carrapato). The São Bento Iron Formation hosts the gold mineralization and was informally subdivided into the Basal Ferriferous Member (Membro Ferrífero Basal) containing up to four mineralized horizons (West, Middle, ,São Bento, and East) with intercalations of barren BIF and metapelitic schists, and the Ferriferous Member of the Top (Membro Ferrífero do Topo) of carbonate-, oxyde-magnetite-, and silicate-facies BIF. The mineralized horizons are sulphide-facies BIF, pure or mixed, in variable but subordinated proportions,with carbonate-, oxyde- and silicate-facies BIF. They show direct correlation between the gold contents and total sulphides. Gold and also all of the sulphides, pyrite, arsenopyrite and pyrrhotite (majors) and sphalerite and calcopyrite (minors) occur in various textural and genetic generations. The main regional metamorphism and tectonics caused recrystallization and heterogeneous deformation of the sulphides, for instance, the concentration through segregation of deformed pyrrhotite crystals into lenticular aggregates parallel to the foliation. Differently, pyrite and arsenopyrite occur as idioblastic crystals showing idiomorphic clean border zones (without inclusions) and internal parts rich in inclusions of gangue minerals, other sulphides and gold; they also occur as newly-formed clean idiomorphic crystals (without inclusions) and, both types, still underwent later ruptile deformations of fracturing/ breakage. Gold occurs mainly as refractory inclusions (\'< OU =\' 5\'mü\'m - \'< OU =\'10\'mü\'m in the pyrite and arsenopyrite (totalling ~80% of the metal content of the mined ore) and as coarser grains (\'> OU =\' 20\'mü\'m - 250 \'mü\'m) free in the ore and intergrown in the lenticular concentrations of deformed pyrrhotites. The coarser gold grains suggest accretive growth during the metamorphic remobilization with redistribution, deformation and recrystallization mainly of the pyrrhotite, but also of other sulphides that contained refractory gold inclusions. The different BIF facies ot the São Bento lron Formation do not show significant geochemical differences for the major oxides and the transition metals V, Cr, Co, Ni and Zn, which, however, do show similiarities to the Isua-BIF. The REE contents of the carbonate-, oxydeand sulphide-facies are similar, too, showing low total-REE, fractionation of the light REE and clear negative anomalies of Ce and positive anomalies of Eu. In view of its geological, petro-metallogenetic and geochemical characteristics the gold mineralization of the São Bento mine is stratiform and considered of sedimentary volcanoexhalative distal (syngenetic) origin. Later tectono-metamorphic and hydrothermal processes caused mainly mineralogical-textural and structural modifications.