 | Vasconcelos, David L., Marques, Fernando O., Nogueira, Francisco C. C., Perez, Yoe A. R., Bezerra, Francisco H. R., Stohler, Rômulo C., Souza, Jorge A. B. (2021) Tectonic inversion assessed by integration of geological and geophysical data: The intracontinental Rio do Peixe Basin, NE Brazil. Basin Research, 33 (1). 705-728 doi:10.1111/bre.12491 | Journal (article/letter/editorial) | | Grande, Brazil. 2Universidade de Lisboa, Lisboa, Portugal. 3Departamento 4Petrobras, de Geologia, Universidade... All rights reserved Accepted Article & Castelo Branco, 2007; Matos, 1992). Previous research carried...de Castro et al., 2007; de Castro, Bezerra & Castelo Branco, 2008; Matos, 1992). The geology of the region...composition and internal structure, dominantly quartz-rich, white sandstones arranged in laminar or oblique...outcropping in the Santa Helena (Figures 3B and 3H) and Várzea da Ema horsts, and along most of the flexural borders |  | | Book | | Exploração Mineira Romana e a Metalurgia do Ouro em Portugal Carla Maria Braz Martins NA EUROPA ATLâNTICA... POVOAMENTO E EXPLORAÇÃO DOS RECURSOS MINEIROS POVOAMENTO E EXPLORAÇÃO DOS RECURSOS MINEIROS NA EUROPA... ANA M. S. BETTENCOURT POVOAMENTO E EXPLORAÇÃO DOS RECURSOS MINEIROS NA EUROPA ATLâNTICA OCIDENTAL COORD...sinal e geoestatística). POVOAMENTO E EXPLORAÇÃO DOS RECURSOS MINEIROS NA EUROPA ATLÂNTICA OCIDENTAL... FICHA TÉCNICA Título: Povoamento e Exploração dos Recursos Mineiros na Europa Atlântica Ocidental Coordenação: |  | Martil, Mariana Maturano Dias, de Fátima Bitencourt, Maria, Nardi, Lauro Valentim Stoll, Koester, Edinei, Pimentel, Márcio Martins (2017) Pre-collisional, Tonian (ca. 790 Ma) continental arc magmatism in southern Mantiqueira Province, Brazil: Geochemical and isotopic constraints from the Várzea do Capivarita Complex. Lithos, 274. 39-52 doi:10.1016/j.lithos.2016.11.011 | Journal (article/letter/editorial) | | Brazil: geochemical and isotopic constraints from the Várzea do Capivarita Complex PT Mariana Maturano Dias...(ca. 790 Ma) recorded in orthogneisses from the Várzea do Capivarita Complex (VCC), southern Mantiqueira...Paleoproterozoic TTG association (ca. 2.0 Ga) from the Arroio dos Ratos Complex (ARC) seems to be the main crustal...magmatism registered in a high grade complex – the Várzea do Capivarita Complex (VCC - Fig. 1, area 1) which...magmatic sources of the orthogneisses from the Várzea do Capivarita Complex, binary mixing models were |  | | Journal (article/letter/editorial) | | consisting of calcite, amphibole, phlogopite, quartz and opaques, display δ13C between + 8.3 and + 10...are composed of calcite, tremolite, phlogopite, quartz, opaques, and wollastonite and exhibit δ13C values...consisting of calcite, dolomite, amphibole, mica, quartz, and opaque minerals in variable amounts, had δ13C...Formation, composed of calcite, tremolite, phlogopite, quartz and opaques, exhibit δ13C values from +8.9 to +...Jucurutu, São Rafael, Caicó-Jardim do Seridó and Varzea-São João do Sabugi sections, lenses with lowangle |  | De Toni, G.B., Bitencourt, M.F., Nardi, L.V.S., Florisbal, L.M., Almeida, B.S., Geraldes, M. (2020) Dom Feliciano Belt orogenic cycle tracked by its pre-collisional magmatism: The Tonian (ca. 800 Ma) Porto Belo Complex and its correlations in southern Brazil and Uruguay. Precambrian Research, 342. 105702 doi:10.1016/j.precamres.2020.105702 | Journal (article/letter/editorial) | | Almeida et al., 2000; Kroner and Stern, 2004; Bento dos Santos et al., 2015; Oriolo et al., 2017). Orogenic...with stars: Porto Belo Complex (PBC – this paper), Várzea do Capivarita Complex (VCC – Gross et al., 2006;...2004; Koester et al., 2016). On the other hand, the Várzea do Capivarita Complex ortho- and paragneisses (Gross...Intrusive Suite (ca. 590 Ma), which includes the Morro dos Macacos Granite, emplaced outside (south) of the...orthogneiss protoliths are tonalite (Fig. 6a to b) to quartz-diorite (Fig. 6c), more rarely granodiorite. The |  | Mendes, Mônica, Lobato, Lydia M., Kunzmann, Marcus, Halverson, Galen P., Rosière, Carlos A. (2017) Iron isotope and REE+Y composition of the Cauê banded iron formation and related iron ores of the Quadrilátero Ferrífero, Brazil. Mineralium Deposita, 52 (2) 159-180 doi:10.1007/s00126-016-0649-9 | Journal (article/letter/editorial) | | granular to schistose fabric, formed by recrystallized quartz, granular, and specular hematite ± magnetite. The...collected: MUS Usiminas, MBC Bocaina, MPB Pau Branco, MG Várzea do Lopes, MCP Casa de Pedra, MAL Alegria,...for metamorphosed and oxidized iron formations. Quartz and hematite usually display recrystallization...(hematite, magnetite, and martite, after magnetite) and quartz, with very rare mica, and other accessory minerals...the area (Dorr 1969; Rosière et al. 1993, 2008). Quartz itabirite is the main type (Fig. 2a–d), consisting |  | Chemale, Farid, Philipp, Ruy Paulo, Dussin, Ivo Antonio, Formoso, Milton Luiz Liquintinie, Kawashita, Koji, Berttotti, Anelise Losangela (2011) Lu–Hf and U–Pb age determination of Capivarita Anorthosite in the Dom Feliciano Belt, Brazil. Precambrian Research, 186 (1) 117-126 doi:10.1016/j.precamres.2011.01.005 | Journal (article/letter/editorial) | | calc-silicate and quartz-feldspar paragneisses of the Várzea Capivarita and orthogneisses of the Arrroio dos Ratos...magmatic ages of the orthogneisses of the Arroio dos Ratos Complex are Paleoproterozoic (ca. 2.0–2.1 Ga)...shown by smaller occurrences of paragneisses of the Varzea da Capivarita Complex. Although both units have...with the main regional deformational phase of the Várzea Capivarita Complex defined by Gross et al. (2006)...amphibolite facies minerals of the surrounding Várzea da Capivarita Complex (see Fig. 2) as presented |  | | Journal (issue) | | recently completed road, he was fascinated by the quartz and amethyst geodes that could be seen in the road...Belo Horizonte. At the time, the Morro Velho gold mine, in the municipality of Nova Lima, was in full production...collected specimens from the cavities of the auriferous quartz vein and sold them in Nova Lima, where collectors...Mineralogical Record, “The Minerals of the Morro Velho Gold Mine, Brazil,” with co-author Richard V. Gaines, in 1973...particular was from the vicinity of the Morro Velho mine: it consisted of a hand-sized plate of white dolomite |  | Lenz, C., Fernandes, L.A.D., McNaughton, N.J., Porcher, C.C., Masquelin, H. (2011) U–Pb SHRIMP ages for the Cerro Bori Orthogneisses, Dom Feliciano Belt in Uruguay: Evidences of a ∼800Ma magmatic and ∼650Ma metamorphic event. Precambrian Research, 185 (3) 149-163 doi:10.1016/j.precamres.2011.01.007 | Journal (article/letter/editorial) | | Micro Continent, VCMS: Várzea do Capivarita Metamorphic Suite; ARGC: Arroio dos Ratos Gneissic Complex;... The mineral assemblage is mostly plagioclase, quartz, biotite and minor feldspar, garnet and orthopyroxene...clinopyroxene and garnet within a matrix of plagioclase and quartz. The mineral assemblage is garnet − orthopyroxene...orthopyroxene − clinopyroxene − plagioclase − quartz ± biotite ± ilmenite. The orthopyroxene–clinopyroxene mafic...is orthopyroxene − clinopyroxene − plagioclase − quartz ± biotite. Orthopyroxene is more abundant than |  | | Journal (article/letter/editorial) | | evolution of the Mantiqueira Province Telmo M. Bento dos Santos a,b,∗ , Colombo C.G. Tassinari c , Paulo E...Amadora, Portugal CeGUL – Centro de Geologia, Universidade de Lisboa, 1749-016 Lisboa, Portugal c IEE-USP...Energia e Geologia, Apartado 7586, 2720-866 Amadora, Portugal. Tel.: +351 91 89 87 365; fax: +351 21 471 90...E-mail address: telmo.santos@lneg.pt (T.M. Bento dos Santos). http://dx.doi.org/10.1016/j.precamres.2014...Cordani, 1971; Cordani et al., 1973; 2 T.M. Bento dos Santos et al. / Precambrian Research 260 (2015) 1–22 |  | | Journal (article/letter/editorial) | | metapelites having quartz phenocrystals with typical morphologies of acidic volcanic rocks (beta quartz) and alkali...the most conspicuous feature is the presence of quartz-syenitic clasts. The breccias and conglomerates...indicated the presence of quartz with irregular (sutured) boundaries and engulfed quartz, plagioclase fragments... The matrix is composed of chlorite, sericite, quartz, lithic fragments, and feldspar. Masquelin and...age of ca. 579 ± 1 Ma (Ar-Ar on amphibole) for quartz-syenites (Pan de Azúcar pluton). Thus the related |  | Gregory, Tiago Rafael, Bitencourt, Maria de Fátima, Nardi, Lauro Valentim Stoll, Florisbal, Luana Moreira (2017) Petrogenesis of metamorphosed Paleoproterozoic, arc-related tonalites, granodiorites and coeval basic to intermediate rocks from southernmost Brazil, based on elemental and isotope geochemistry. Lithos, 277. 72-91 doi:10.1016/j.lithos.2016.08.007 | Journal (article/letter/editorial) | | associations have been identified in the Arroio dos Ratos Complex (ARC) Paleoproterozoic magmatism. The...evolutionary processes of the Paleoproterozoic NU Arroio dos Ratos Complex (ARC) magmatism, a TTG-type association...conditioned by the SBSB are represented by the Várzea do Capivarita Complex (as defined by Martil et...intermediate magmatism. They belong to the Arroio dos Ratos Complex (ARC), as defined by Gregory et al...lower-temperature and shallower conditions, are marked by quartz-mylonites and phyllonites in discontinuous ridges |  | | Journal (issue) | | France; Rui Galopim de Carvalho, Portugal Gemas, Lisbon, Portugal; Lee A. Groat, University of British...blood ruby, royal blue and cornflower sapphire, old mine/ Muzo green emerald, sunrise and sunset padparadscha...(Figure 4b), spessartine (Figure 4c), almandine, quartz, zircon, apatite, topaz, sillimanite, fluorite...tourmaline (Figure 4d), aquamarine, spessartine, quartz, topaz, zircon and phenakite are mined. Tourmaline...The source of much of this pyrite is the Huanzala mine in west-central Peru, which has probably yielded |  | | Journal (article/letter/editorial) | | to other regional granites, as the 611 Ma Serra dos Macacos (SMG) and 620 Ma Rio Pequeno Granite (RPG)...related to the Paleoproterozoic Camboriú Complex quartz-feldspathic orthogneisses. The coincidence of CMG...microgranular enclaves and synplutonic dykes. The Serra dos Macacos Granite (SMG) consists of weakly foliated...are common, with margins recrystallized by SGR. Quartz forms Page 9 of 49 interstitial aggregates and...plagioclase recrystallized by SGR (Fig.5b), and quartz with chessboard pattern (Fig. 5c) are locally found |  | | Journal (issue) | | associated with both the alteration of sulfide-bearing mine wastes and primary minerals. The minerals found...infrared (SWIR) spectral analysis at San Miguel mine environment, Iberian Pyrite Belt (SW Spain). Journal...pyrite, chalcopyrite, sphalerite, galena, stibnite, quartz, barite, dolomite, adularia, calcite, chlorite...environment, during the complex process of acid mine drainage. Thus, it is important to know the mineral...metals to the environment in the process of acid mine drainage. 9 References Anderson J. L., Peterson |  | | Journal (article/letter/editorial) | | Piratini gneiss tonalitic xenoliths, and the Arroio dos Ratos (now Encantadas) gneiss. The results allow...h e i r o M a c h a d o s u i t e , t h e Arroio dos R a t o s high-grade tonalite gneisses (Fig. 2),...ages of up to ~860 Ma. Moreover, the ancient Arroio dos Ratos gneisses have been considered as oogenetic...Based on the calc-alkaline nature of the Arroio dos Ratos gneisses and on its Rb-Sr age of ~725 Ma (Tommasi...both units (Pinheiro Machado suite and the Arroio dos Ratos gneisses) and interpreted them as the "Brasiliano |  | Will, T.M., Gaucher, C., Ling, X.-X., Li, X.-H., Li, Q.-L., Frimmel, H.E. (2019) Neoproterozoic magmatic and metamorphic events in the Cuchilla Dionisio Terrane, Uruguay, and possible correlations across the South Atlantic. Precambrian Research, 320. 303-322 doi:10.1016/j.precamres.2018.11.004 | Journal (article/letter/editorial) | | titanite, apatite, opaque phases and quartz. When present, quartz occurs only in veins. Geochemical and...garnet and white mica, opaque phases and zircon. Quartz is strongly deformed with undulose extinction,...locally, core-and-mantle textures. The presence of quartz subgrains is common. The granite contains very...biotite, quartz, opaque phases, minor garnet and white mica, rutile, monazite and zircon. Quartz is strongly... 3) and contains perthitic potassium feldspar, quartz, opaque phases and minor iron oxides. Most feldspar |  | Will, Thomas M., Höhn, Stefan, Frimmel, Hartwig E., Gaucher, Claudio, le Roux, Petrus J., Macey, Paul H. (2020) Petrological, geochemical and isotopic data of Neoproterozoic rock units from Uruguay and South Africa: Correlation of basement terranes across the South Atlantic. Gondwana Research, 80. 12-32 doi:10.1016/j.gr.2019.10.012 | Journal (article/letter/editorial) | | Punta del Este) Terrane (CDT) in Uruguay and the Várzea do Capivarita Complex (VCC) in southern Brazil...(Ramos et al., 2018; Vieira et al., 2019) and the Várzea do Capivarita Complex, VCC ro of (Fig. 1) that...contain calcic amphibole, plagioclase, epidote, quartz, ilmenite and sphene in varying proportions, as...coexisting amphibole, epidote and plagioclase (+quartz, ilmenite, sphene and H2O) range from 534 to 598...amphibole, clinopyroxene, plagioclase, epidote, quartz, K-feldspar, ilmenite, sphene, rutile and minor |  | de Borba, André Weissheimer, Mizusaki, Ana Maria Pimentel, da Silva, Diogo Rodrigues Andrade, Koester, Edinei, de Lima Noronha, Fabio, Casagrande, Júnia (2006) Provenance of the Neoproterozoic Maricá Formation (Sul-rio-grandense Shield, Southern Brazil): Petrographic and Sm–Nd isotopic constraints. Gondwana Research, 9 (4) 464-474 doi:10.1016/j.gr.2006.01.005 | Journal (article/letter/editorial) | | arcrelated basins), based on the relative amounts of quartz (Q), total feldspars (F), and fine-grained lithic...related to the Várzea do Capivarita metamorphic suite (Frantz et al., 1984) and the Arroio dos Ratos gneissic...and 300–500 points were counted in each sample. Quartz, feldspars and fine-grained lithic contents were...Monocrystalline quartz (Qm) Polycrystalline quartz (Qp) Quartz in plutonic r.f. Quartz in volcanic r.f...monocrystalline quartz (Qm) is the dominant detrital component (32.4% to 39.6%), and polycrystalline quartz accounts |  | Padilha, Dionatan Ferri, Bitencourt, Maria de Fátima, Nardi, Lauro Valentim Stoll, Florisbal, Luana Moreira, Reis, Carolina, Geraldes, Mauro, Almeida, Bruna Saar (2019) Sources and settings of Ediacaran post-collisional syenite-monzonite-diorite shoshonitic magmatism from southernmost Brazil. Lithos, 344. 482-503 doi:10.1016/j.lithos.2019.06.004 | Journal (article/letter/editorial) | | ABSTRACT T The Arroio do Silva Pluton comprises quartz-rich syenite-monzonite-diorite rocks, with subordinate...varieties: (i) quartz monzonite to syenite, (ii) quartz monzonite to monzodiorite and (iii) quartz diorite....content, which is characteristically euhedral in the quartz monzonite to syenite variety and becomes subhedral...magmas result in hybrid varieties represented by quartz monzonite to monzodiorite. A third magma type is...in zircon by LA-MC-CIP-MS determined for the ASP quartz monzonite to syenite variety is in agreement with |  | Bastos, Vivianne Andrade, Koester, Edinei, Lenz, Cristine, Dal Olmo‐Barbosa, Laércio, Porcher, Carla C., Loureiro, Paula O., Vieira, Daniel T., Ramos, Rodrigo C., Cedeño, Daniel G. (2021) Contribution to the understanding of the Pinheiro Machado Complex (Dom Feliciano Belt, Brazil): A study of textures, mineral chemistry, and crystallization conditions. Geological Journal, 56 (2). 1012-1033 doi:10.1002/gj.3980 | Journal (article/letter/editorial) | | The PMC is composed by comagmatic intrusions of quartz diorite, tonalite, and granodiorite with medium-...injections with alkali-feldspar, fluorite, biotite and quartz. In pegmatites the crystals can mea- Two main...amphibolites are fine-grained, liths, quartz diorite, quartz diorite with melt, syenogranitic leucosome...grained (<1 mm) amphibole, plagioclase, biotite, and quartz. The amphibole has a subhedral, sometimes euhedral...preserve the polysynthetic twinning. Contacts are quartz diorite, with sharp and curved or gradual contacts |  | Parker, Ceth, Wolf, Julie, Auler, Augusto, Barton, Hazel, Senko, John (2013) Microbial Reducibility of Fe(III) Phases Associated with the Genesis of Iron Ore Caves in the Iron Quadrangle, Minas Gerais, Brazil. Minerals, 3 (4) 395-411 doi:10.3390/min3040395 | Journal (article/letter/editorial) | | with banded iron formation (BIF), iron ore, and mine spoil. In all cases, the addition of a humic acid...oneidensis to Fe(III) phases. The particle size and quartz-Si content of the solids appeared to exert control...Fe(III) associated with solid phases containing more quartz. Our results provide evidence that IOCs may be...substrates (containing BIF, canga, iron ore, and quartz) are very insoluble and have low erosion rates...revealed that they contain abundant hematite and quartz, and in the case of canga, goethite (Figure 2) |  | Florisbal, Luana Moreira, Bitencourt, Maria de Fátima, Janasi, Valdecir de Assis, Nardi, Lauro Valentim Stoll, Heaman, Larry M. (2012) Petrogenesis of syntectonic granites emplaced at the transition from thrusting to transcurrent tectonics in post-collisional setting: Whole-rock and Sr–Nd–Pb isotope geochemistry in the Neoproterozoic Quatro Ilhas and Mariscal Granites, Southern Brazil. Lithos, 153. 53-71 doi:10.1016/j.lithos.2012.04.031 | Journal (article/letter/editorial) | | of mildly alkaline affinity, the Zimbros and Morro dos Macacos granites (Chemale et al., 2003, 2012), respectively...Fine-grained granite dyke Estaleiro Complex Morro dos Macacos Granite Zimbros Granite Zimbros Acid dyke...inclusions of biotite, apatite, zircon, ilmenite and quartz. K-feldspar megacrysts are larger than plagioclase...comprising plagioclase (An31), biotite, apatite, quartz and allanite. Feldspar megacrysts are generally...hightemperature recrystallization (Bitencourt, 1996). Quartz may form irregular, interstitial igneous grains |  | | Journal (article/letter/editorial) | | Évora, Portugal (pedro@uevora.pt) 2 CeGUL/Dep. Geologia da Fac. Ciências Univ. Lisboa, Portugal (jmata@fc...e Avaliação de Riscos Geológicos/ Univ.Açores, Portugal (maria.gp.queiroz@azores.gov.pt) Terceira Island...Near-solidus solubility of alkali feldspar-mica-quartz in H2O at 1 GPa: Implications for crustal fluids...manning@ess.ucla.edu) At temperatures just below the quartz-saturated wet solidi of albite (Ab) and K-feldspar...K-feldspar (Ksp) in the middle and lower crust, quartz (Qz) solubility in H2O is high [1] and there is strong |  | Araujo, Cristina, Pedrosa-Soares, Antonio, Lana, Cristiano, Dussin, Ivo, Queiroga, Gláucia, Serrano, Paula, Medeiros-Júnior, Edgar (2020) Zircon in emplacement borders of post-collisional plutons compared to country rocks: A study on morphology, internal texture, U–Th–Pb geochronology and Hf isotopes (Araçuaí orogen, SE Brazil) Lithos, 352. 105252 doi:10.1016/j.lithos.2019.105252 | Journal (article/letter/editorial) | | SGB, São Gabriel da Baunilha; Am, Aimorés; VA, Várzea Alegre; SA, Santa 124 Angélica; VN, Venda Nova;...Zircon commonly appears as 230 inclusions in quartz, feldspars, biotite, allanite and titanite, showing...habits. Zircon usually forms tiny inclusions in quartz, feldspars, and biotite. 253 3.1.3 Sample CA-05...Zircon is commonly found as inclusions in 265 quartz, feldspars, and biotite. 266 3.2 Country Rocks...paragneisses show a grano-lepidoblastic matrix composed of quartz, K-feldspar, 274 plagioclase, cordierite and |
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