 | | Journal (article/letter/editorial) | | Springer-Verlag1986 Origin of granite at Cabo de Santo Agostinho, Northeast Brazil Leon E. Long 1, Alcides N. Sial...Department, Federal University of Pernambuco, Recife 50.000, PE, Brazil 3 Department of Geosciences, Pennsylvania...on the Atlantic coast at Cabo de Santo Agostinho, 30 km south of Recife, Brazil has been extensively studied...Twenty-three major-element analyses indicate that the Cabo granite ranges from peralkaline to peraluminous;...(biotite absent), and nearly total absence of plagioclase. The rocks are moderately to highly enriched |  | | Report (chapter) | | Rio de Janeiro (DGRG/UERJ), Rio de Janeiro, Brazil 2 Programa de Posgraduação, Faculdade de Geologia...UERJ, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil *Corresponding author (e-mail: mauro...However, rocks ascribed to the Cabo Granite (104 Ma) are observed in NE Brazil. In West Africa, sparse Aptian–Albian...alkaline magmatic trend is observed from Poços de Caldas to Cabo Frio, comprising igneous intrusions dated...trending NW also occur in the region extending from the Cabo Frio Province towards the Central Brazilian Craton |  | | Journal (article/letter/editorial) | | granites with low anorthite contents in their plagioclase phases. Most rocks are alkali-feldspar granites...component in the plagioclase, and some are granites, with > 5~o an in the plagioclase (IUGS classification;...rock types as "granites." Granites with low-an plagioclase are an abundant rock type, commonly characterized...simple mineralogy of quartz, K feldspar, sodic plagioclase, and minor biotite. Rogers and Greenber9 (1990)...J.W. Rogers and M. E. Satterfield Pikes Peak Agostinho ~6 o-eoqnl • 0 : • " e , oooO Silsilah |  | | Journal (article/letter/editorial) | | Sample Grid reference K-Feldspar Quartz Albite Plagioclase Arfvedsonite Hornblende S o d i c pyroxene Calcic...of relatively aluminous pyroxene and plagioclase (the 'plagioclase effect' of Bowen [1945]) could lead...(>100°C) crystallization interval between the plagioclase saturation boundary and the solidus in A-type...granites (Clemens et a! 1986) indicates that plagioclase fractionation would be an operative process in...small degree of fractionation of early formed plagioclase would greatly deplete the melt in CaO and if |  | | Report (chapter) | | These cumulates range from orthopyroxene + plagioclase-rich assemblages at low pressure to clinopyroxene...distinguished as follows: greywackes contain biotite + plagioclase and no aluminosilicate; marie pelites contain...with or without subordinate muscovite and/or plagioclase; muscovite is the dominant hydrous phase in felsic...felsic pelites, which may also contain plagioclase and subordinate biotite. The most obvious differences...l b). At crustal pressures, clinopyroxene + plagioclase are almost always present in the peritectic assemblage |  | Simon, I., Jung, S., Romer, R.L., Garbe-Schönberg, D., Berndt, J. (2017) Geochemical and Nd-Sr-Pb isotope characteristics of synorogenic lower crust-derived granodiorites (Central Damara orogen, Namibia) Lithos, 274. 397-411 doi:10.1016/j.lithos.2016.12.033 | Journal (article/letter/editorial) | | One group of samples consists of ca. 45-55% plagioclase, ca. 20-30% alkali feldspar, ca. 20-30% quartz...The plagioclase (up to ca. 4 mm MA in length) is partly altered to sericite. Both plagioclase and alkali...other group of samples consists of ca.15-20% plagioclase, ca. 50% alkali feldspar, ca. 20-30% quartz,...exsolutions. Plagioclase is partly altered to AC sericite and show polysynthetic twins. Both plagioclase and...are unrelated indicate that fractionation of plagioclase was not important. NU For the leucogranites |  | JUNG, S., BERNDT, J., STRACKE, A., HAUFF, F., KASTEK, N. (2014) ANATEXIS OF JUVENILE MAFIC TO INTERMEDIATE CRUST -CONSTRAINTS FROM MAJOR AND TRACE ELEMENT AND SR, ND, PB ISOTOPES OF DIORITES TO GRANITES (DAMARA OROGEN, NAMBIA) South African Journal of Geology, 117 (1) 149-171 doi:10.2113/gssajg.117.1.149 | Journal (article/letter/editorial) | | breakdown; (8) partial melting due to muscovite + plagioclase + quartz + H2O ↔ melt + sillimanite; (9) K-f...partial melting due to biotite + K-feldspar + plagioclase + quartz + cordierite ↔ melt + garnet. CZ, Central...other occurrences elsewhere in the Damara orogen (van de Flierdt et al., 2003; Jung et al., 2002; 2009) an...subhedral brownish-green hornblende and biotite. Plagioclase shows no, or only cryptic, zoning. Anhedral quartz...phenocrysts. These rocks are composed mainly of plagioclase, quartz, K-feldspar and biotite. Some samples |  | Fan, Xingzhu, Sun, Fengyue, Xu, Chenghan, Wu, Dongqian, Yu, Lu, Wang, Li, Yan, Cheng, Bakht, Shahzad (2022) Volcanic rocks of the Elashan Formation in the Dulan-Xiangride Basin, East Kunlun Orogenic Belt, NW China: Petrogenesis and implications for Late Triassic geodynamic evolution. International Geology Review, 64 (9) 1270-1293 doi:10.1080/00206814.2021.1923074 | Journal (article/letter/editorial) | | texture. Phenocrysts contain quartz (10–15 vol%), plagioclase (5–10 vol%), and minor biotite. The groundmass...groundmass consists of fine-grained plagioclase, iron titanium oxide, and glass (Figure 4(a,b)). 3 The rhyolites...3b). Phenocrysts (10–15 vol%) contain quartz, plagioclase, and biotite (occasionally partly resorbed) (Figure...3d) shows a porphyritic texture. They contain plagioclase (10–15 vol%), quartz (10–15 vol%), and minor...biotite as phenocrysts together with fine-grained plagioclase, quartz, glass and minor opaque oxides (Figure |  | Bergemann, C., Jung, S., Berndt, J., Stracke, A., Hauff, F. (2014) Generation of magnesian, high-K alkali-calcic granites and granodiorites from amphibolitic continental crust in the Damara orogen, Namibia. Lithos, 198. 217-233 doi:10.1016/j.lithos.2014.03.033 | Journal (article/letter/editorial) | | diorites present (Jung et al., 2002, 2009, 2014; van de Flierdt et al., 2003). The Central Zone is defined...assemblage of andalusite - quartz - Kfeldspar - plagioclase - cordierite - muscovite - biotite. 3.2. Geochronology...can be interpreted to reflect fractionation of plagioclase, biotite, zircon, apatite, titanite and possibly...possibly magnetite. Fractionation of plagioclase or Kfeldspar is indicated by a positive correlation between...fractionating assemblage consists of 35% K-feldspar, 45% plagioclase and 20% biotite. The extent of fractionation |  | Milani, Lorenzo, Lehmann, Jérémie, Naydenov, Kalin V., Saalmann, Kerstin, Kinnaird, Judith A., Daly, J. Stephen, Frei, Dirk, Lobo-Guerrero Sanz, Alberto (2015) A-type magmatism in a syn-collisional setting: The case of the Pan-African Hook Batholith in Central Zambia. Lithos, 216. 48-72 doi:10.1016/j.lithos.2014.11.029 | Journal (article/letter/editorial) | | triple junction between the Congo, Kalahari and Rio de la Plata Cratons. To the east, in Zambia, the orogen...the Palaeoproterozoic Bangweulu Block (Fig. 1B) (De Waele and Fitzsimons, 2007; Hanson, 2003; Key et...sinistral strike-slip feature (Coward and Daly, 1984; de Swardt et al., 1965; Unrug, 1983), this lineament...Supergroup (Roan Group) of the Lufilian Arc (Binda, 1994; de Swardt and Drysdall, 1964; Johnson et al., 2007 and...argillaceous succession of the Upper Kundelungu (de Swardt and Drysdall, 1964), comprising shales, slates |  | | Journal (article/letter/editorial) | | mm; subhedral, locally sericitized automorphic plagioclase (25– composed of silicic volcanic rocks and...Jiefangyingzi area. Q: quartz; Bi: biotite; Pl: plagioclase; Mc: microcline (All micrographs in cross‐polarized... and Ba–Sr probably indicate the removal of plagioclase and fractional ing on the different tectonic...magnetite‐series, rapakivi‐ type granites of Carajàs, Brazil: Implications for classification and petrogenesis... (1986). Origin of granite at Cabo de Santo Agostinho Northeast Brazil. Contributions to Mineralogy and |  | | Journal (article/letter/editorial) | | content accounts for about 40 vol.%, mainly plagioclase. A small amount of quartz phenocryst can be seen...sporadically. The porphyritic crystal particles of plagioclase are generally between 1 and 3 mm, and are slightly...(cross-polarized light). Mineral abbreviations: Pl, plagioclase; Qtz, quartz; Ep, epidote; Kfs, K-feldspar; Amp...(Figure 3h). The porphyritic minerals are mainly plagioclase, amphibole, and pyroxene. The matrix content...about 70 vol.%, mainly composed of microcrystal plagioclase, brown volcanic glass, and microcrystal mafic |  | Chen, Guochao, Pei, Xianzhi, Li, Ruibao, Li, Zuochen, Chen, Youxin, Liu, Chengjun, Pei, Lei (2022) Multiple Sources of Indosinian Granites and Constraints on the Tectonic Evolution of the Paleo-Tethys Ocean in East Kunlun Orogen. Minerals, 12 (12) 1604 doi:10.3390/min12121604 | Journal (article/letter/editorial) | | composition of the plutons is similar, including plagioclase, K-feldspar, diorite. The main mineral composition...including plagioclase, quartz, hornblende, and biotite.and Thebiotite. contentThe of content plagioclase and...relatively K-feldspar, quartz, hornblende, of plagioclase and hornblende is high in the mafic rocks, with...indicates that fractional crystallization of plagioclase, biotite, and biotite, apatite increases (Figure...indicates that fractional crystallization of plagioclase, may have occurred. and apatite may have occurred |  | Das, Susmita, Goswami, Bapi, Basak, Ankita, Bhattacharyya, Chitta (2020) A Grenvillian magmatic almandine garnet-bearing ferroan granite intrusion in the Chhotanagpur Gneissic complex, Eastern India: Petrology, petrochemistry, petrogenesis and geodynamic implications. Lithos, 376. 105749pp. doi:10.1016/j.lithos.2020.105749 | Journal (article/letter/editorial) | | phenocryst of perthitic K-feldspar. (c) Antiperthitic plagioclase occurs as phenocryst. Note preferred orientation...of biotite laths. Note garnet is replaced by plagioclase. (e) Intimate association of hornblende and garnet...Garnet grain with the corona of hornblende, plagioclase, and quartz. (g) Sub-idiomorphic, sub-equant...hornblende-opaque and plagioclase-opaque minerals. Note quartz surrounded by a thin rim of plagioclase in contact...occurs as inclusions within garnet. Also note plagioclase rim follows the irregular contact of garnet with |  | | Journal (article/letter/editorial) | | feldspars include 35–40% alkali feldspar and 20–25% plagioclase feldspar. The alkali feldspar is anhedral to...feldspar is significantly more abundant. The plagioclase feldspar is subhedral to euhedral and has rectangular...rectangular shapes ∼ 0.3–0.7 cm long. The plagioclase typically shows saussurite alteration and in a few...experienced melting (Scoates et al., 1996). Cumulate plagioclase is typically the reservoir for Eu in mafic-ultramafic..., 1986. Origin of granite at Cabo de Santo Agostinho, northeast Brazil. Contributions to Mineralogy and |  | | Book | | .......................................... 167 Brazil..................................................particular of Africa, the U.S.S.R., Canada and Brazil, much of it inspired by the search for exploitable...Montreal area of Canada and for central Coais, Brazil. N11111ber and na111e Each occurrence has been...a n;:itional number, for example Jacupiranga is Brazil 88. This is followed by the preferred name of the.../11tematio11nl Sy111posi11111 011 Cnr/Jo11 atitt?s, Pocos de Cnlrlas: 123-33. H EINRICH, E.W. 1966. The geology |  | | Book | | BARTORELLI ::• . . .. MINERALS & PRECIOUS STONES OF BRAZIL Sponsored by: VALE MINISTER.IO DA CULTURA ©...Brasileira do Livro, SP, Brazil) Cornejo, Carlos .Minerals & precious stones of Brazil. Carlos Cornejo, Andrea...3. Minerals - Brazil 4. Minerals- Classification 5. Mineralogy 6. Mineralogy - Brazil - History 7. Precious...Precious stones - Brazil I. Bartorelli, Andrea. II. Title. 09-10025 Cover photograph: Crystal of brazilianite...Landmann. CDD-549 Indexes for systematic catalog: 1. Brazil: Minerals and precious stones: Mineralogy and gemology |  | | Book (volume) | | and individuals. Approved file to instructions de- ence will be made to the Manual when additional...canal; Renal artery; Toes; is in the categories are de- The if it table of pattern headings is LCSH...Ferdinand, d. 1521 rather than Magalhaes, Fernao de, d. 1521; Solidarity (Polish labor organization)...Ejdrcito Popular de la 15th International Reptiblica. Brigade Spain. Ej6rcito Popular de la Abraham Lincoln...Lincoln Repdblica. Brigade Spain. Ejdrcito Popular de la Brigada Internacional, Reptiblica. XV — |  | | Book (volume) | | family USE Sabine family Sabana de Bogota (Colombia) USE Bogoti, Sabana de (Colombia) Sabanero Indians ...Geog) RT Cervantes Saavedra family Saavedra, Palacio de los (Murcia, Spain) USE Colegio Mayor Azarbe (Murcia...USE Utah juniper Sabinada, Brazil, 1837-1838 USE — Bahia (Brazil State) History Revolution, 1837-1838...Parish missions Sacred face crucifix USE Volto Santo (Crucifix) Sacred fig USE Ficus religiosa Sacred...Site, Mexico) Sacrificios Island (Mexico) UF Isla de los Sacrificios (Mexico) Isla Sacrificios (Mexico) |
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