 | Parente, Clóvis Vaz, Veríssimo, César Ulisses Vieira, Botelho, Nilson Francisquini, Xavier, Roberto Perez, Menez, Jacqueline, Oliveira Lino, Ramon de, Araújo da Silva, Cristian Dickson, Santos, Ticiano José Saraiva dos (2019) Geology, petrography and mineral chemistry of iron oxide-apatite occurrences (IOA type), western sector of the neoproterozoic Santa Quiteria magmatic arc, Ceará northeast, Brazil. Ore Geology Reviews, 112. 103024 doi:10.1016/j.oregeorev.2019.103024 | Journal (article/letter/editorial) | | neoproterozoic santa quiteria magmatic arc, ceará northeast, brazil Clóvis Vaz Parente, César Ulisses Vieira...neoproterozoic santa quiteria magmatic arc, ceará northeast, brazil, Ore Geology Reviews (2019), doi: https://doi...NEOPROTEROZOIC SANTA QUITERIA MAGMATIC ARC, CEARÁ NORTHEAST, BRAZIL F Clóvis Vaz Parente*1; César Ulisses...addresses: Federal do Ceará – Campus do Pici, Bloco 912, 60455-760, Fortaleza PR (CE), Brazil 2Universidade...Universitário Darcy Ribeiro, 70910-900, Brasília (DF), Brazil 3Instituto 4Programa AL de Geociências – Universidade |  | | Journal (article/letter/editorial) | | Melaphonolites (24A, B) are composed mainly of green aegirine-augite, euhedral nepheline, tabular or poikilitic...brown hornblende, clinopyroxene with rims of green aegirine and titanite. Alkali feldspar, clinopyroxene and...main phenocrysts together with clinopyroxene (aegirine-augite), minor titanite and apatite. Glomerocrysts...euhedral nepheline with only a small proportion of aegirine. Garnet is absent. The accessory minerals include...suite and cognate xenoliths of the Fortaleza district (Ceara, Brazil). Eur J Mineral 2:687-709 Machddek |  | | 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...croperthitic orth oclase, lesser andesine, aegirine-augite, a rfvedsonitic amphi bole, biotite and m |  | Ackerman, Lukáš, Ulrych, Jaromír, Řanda, Zdeněk, Erban, Vojtěch, Hegner, Ernst, Magna, Tomáš, Balogh, Kadosa, Frána, Jaroslav, Lang, Miloš, Novák, Jiří K. (2015) Geochemical characteristics and petrogenesis of phonolites and trachytic rocks from the České Středohoří Volcanic Complex, the Ohře Rift, Bohemian Massif. Lithos, 224. 256-271 doi:10.1016/j.lithos.2015.03.014 | Journal (article/letter/editorial) | | Macdonald, 2003; Macdonald and Scaillet, 2006) and Fortaleza district ⁎ Corresponding author. Tel.: +42 2 33087240;... trachyandesites containing diopside with rare augite cores hedenbergite is absent. Aluminium and Ti...generally decreasing from core to rim. Aegirine–augite to aegirine is also present in the form of needles...ignition for the whole suite (Supplementary Table 1). Augite En Wo Fs 7.1. Major elements TB - T B A En...suite and cognate xenoliths from Fortaleza district (Ceara, Brazil). European Journal of Mineralogy 2 |  | BECCALUVA, L., BARBIERI, M., BORN, H., BROTZU, P., COLTORTI, M., CONTE, A., GARBARINO, C., G., C.B. G., M., A., MORBIDELLI, L., RUBERTI, E., SIENA, F., TRAVERSA, G. (1992) Fractional Crystallization and Liquid Immiscibility Processes in the Alkaline-Carbonatite Complex of Juqui (S o Paulo, Brazil) Journal of Petrology, 33 (6) 1371-1404 doi:10.1093/petrology/33.6.1371 | Journal (article/letter/editorial) | | Alkaline-Carbonatite Complex of Juquia (Sao Paulo, Brazil) ^Istituto aj Mineralogia Universita di Ferrara...Politecnica, Universidade de Sao Paulo, Sao Paulo, Brazil ^Dipartimento di Scienze delta Terra, Universita...Geocidncia, Universidade de Sao Paulo, Sao Paulo, Brazil 1 Dipartimento di Scienze della Terra, Universita...crops out in the Precambrian gneissic basement in Brazil over an area of ~ 14 km2. It consists of olivine... 1988). In this respect, the Juquia complex in Brazil is one of the most suitable for petrological study |  | | Book (volume) | | situation arises with regard to intergrown pyroxenes (augite and pigeonite). Exsolution lamellae of cummingtonite...1988). Similar occurrences are those at Buritirana, Brazil (Peters et al. 1977); Kaso Mine, Japan (Yosimura...1977. The manganese deposits of Buritirama (Para, Brazil). Schweiz. Min. Petr. Mitt., 57, 313-27. Phillips...occurs as overgrowths on augite and hornblende, as pseudomorphs after augite and hornblende and as needles...Trgo—Tr¢o, the actinolite occurs surrounding relict augite, dispersed in quartz—albite layers and with nematoblastic |  | | Book | | indicating a carbonaceous material. Emeralds from Brazil are usually full of thin liquid films and there...noticed in a goshenite (colourless beryl) from Brazil and in the same crystal a manganese apatite and...always twinned according to two different laws: the Brazil twin in which left- and righthanded crystals interpenetrate...heat-treatment of some brownish material from Ouro Preto, Brazil; it contains sufficient chromium to show a red...original stones were found at the Maxixe mine in Brazil in 1917 and in about 1971 stones of a similar colour |  | | Report (volume) | | including Venezuela, Guyana, Suriname, and Northern Brazil.............. 1 3 9 17 29 55 55 58 58 61 63 69...Colombia, Guyana, Brazil, Suriname, and French Guiana. The Guapore, or Western Central Brazil Shield, south...French Guiana, as well as parts of neighboring Brazil and Colombia (fig. 1). The Venezuelan Guayana Shield...Mina Cali Mina Colombia Mina Corozo Mina Morocha-Fortaleza Mina Nueva MinaOrdaz Mina Ortega 280 253 292...Africa (Premoli and Kroonenberg, 1981), and Araxa, Brazil (Young, 1984). La Churuata is a deeply weathered |  | | Book | | measuring 3 x 3 cm perched on prismatic black aegirine crystals, is in the Gilles Haineault collection...Watson, Trimble and Cowgill, 1977). LATINAMERICA BRAZIL Jacupiranga mine, Sao Paulo. Among the crystallized...in which euhedral crystals of andesine feldspar, augite and ilmenite rest on matrix of fine-grained basalt...superb specimens of many species, most notably aegirine, arfvedsonite, epididymite, eudidymite, zircon...feldspar and aegirine, and smoky quartz crystals and thin-prismatic crystals of aegirine rise from some |  | | Journal (volume) | | Emeralds from the Piteiras mine, Minas Gerais State, Brazil: genetic implications from fluid inclusion studies...in Itabira is located in the Minas Gerais State, Brazil and produces gem quality emeralds. Ultramafic rocks...property. “Gem-quality” alexandrite specimens from Brazil, India, Madagascar, Russia, Sri Lanka, and Tanzania...sources. Alexandrite samples from the Hematita mines (Brazil) have typically high Sn (up to 2294 ppm) concentrations...showing LA-ICP-MS data [ppm] for alexandrites from Brazil (BZ), Madagascar (MAD), Russia, Sri Lanka, and |  | | Book | | caldera wall; PT, Pico Teide; PV, PicoViejo; Fo, La Fortaleza. 108 A. Pittari et al. eruption cycles represented...lithic breccia on the Diego Hernández and La Fortaleza sectors of the caldera wall, based on stratigraphic...25–30%, Figure 4a, b); lesser interstitial aegirine-augite, arfvedsonite and ilmenite; minor biotite,... titanite and magnetite; late-stage stellate aegirine clusters; and exotic accessory minerals. Wolff...clinopyroxene; Aug, augite; TiAug, titanaugite; Aeg, aegirine; Agt, aegirine-augite; Am, amphibole; Arf; |  | | Book | | headwall: 240 ky in Icod (see Chap. 6), 170 ky in La Fortaleza and 180 ky in Diego Hernández (Ancochea et al...break is observed between the southern Tigaiga-Fortaleza scarps and the western Los Organos scarp. The...pyroxene basalt with plagioclase. Phenocrysts of augite (cpx), olivine (ol), sieve-textured plagioclase...with predominant plagioclase phenocrysts, and less augite and olivine in a hypocrystalline matrix (XP; 109)...intermediate composition together with slightly sodic augite, oxides and subordinate olivine, suspended in a |  | | Book (edition) | | ft) thick at Urubu, near Araçuai, Minas Gerais, Brazil. Fine pink and green gem-quality tourmaline has...acid members of the volcanic province in southern Brazil and Uruguay, and the fire opals occurring in small...amethyst from volcanic rocks in Rio Grande do Sul, Brazil. The amethyst crystals are more strongly coloured...sands containing diamonds near Sopa, Minas Gerais, Brazil The above discussion has concentrated on clastic...worldwide but some of the most important are in Brazil, where the gem-quality deposits are associated |  | | Book | | Geosciences Institute University of São Paulo São Paulo Brazil Pedro Oyhantçabal Departamento de Geodinámica Interna...recognized similarities in the ‘old granites’ of Brazil and southern Africa. On the other hand, du Toit...‘Brazilian system’ defined by Alcide d’Orbigny in Brazil (Beaumont 1844), arguably corresponding to the...geochronological data of the Precambrian basement of southern Brazil, Uruguay and Argentina were reported by Hart (1966)...and geochemical data of the Nico Pérez Terrane in Brazil and Uruguay in order to constrain its regional |  | | Journal (article/letter/editorial) | | crust anatetic event, Socorro-Guaxupé Nappe, SE Brazil Physico-chemical evolution of Fe-Si-rich interfacial...Geosciences Inst., São Paulo Univ., 05508-080, Brazil. (*correspondance: claudio.mora@usp.br; camposnt@usp...camposnt@usp.br) The Southern Brasília Orogen, SE Brazil, accurs along the southern border of the São Francisco...University of Ouro Preto, Ouro Preto, MG 35400000, Brazil (*correspondence: nalini@degeo.ufop.br) Introduction...a pCO2 proxy in the Ediacarian Araras platform, Brazil Magnetic susceptibility and !18O characterization |  | | Book (edition) | | was considered to have spanned the gap between Brazil and Africa and another between Europe and North...Amphiboles (mainly hornblende) Pyroxenes (mainly augite) - Olivine - 7.6 Calcite and dolomite - ...mem¬ bers, which include the commonest pyroxene, augite, usually contain some alumina. This alu¬ minium...pyroxene, known as acmite or aegirine, NaFe3+Si206, makes a series with augite, the intermediate members...members of which are known as aegirine-augite. These substitutions, of Na + , Fe3 + and Al3 + , cannot be shown |  | | Report (issue) | | the Meruoca and Mocambo granites, northeastern Brazil, by Alcides N. Sial and Leon E. 398 Long 372 Preliminary...eucrites in its higher a bundances of alkali elements, augite and m agnetite and the fact that it is not brecciated...age determinations on Precambrian sediments in Brazil and Southern Africa ARGON ISOTOPIC GEOCHEMISTRY...diamonds. The kimberlites from southern Africa and Brazil date from about the time of opening of the South...Southern Africa Brazil 5 6-13 12-450 17-50 Transvaal, So. Africa So. Africa Brazil Angola So. Africa |
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