 | | Journal (article/letter/editorial) | | metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil Received: 26 January 2000 / Accepted:...xenoliths in a basanitic lava ¯ow from Fernando de Noronha Island (southwest Atlantic). A petrological...Cu-monosul®de, Carich carbonate and dense CO2. The interrelationships between the glass, sul®de and carbonate...inclusions permit speculation that silicate, sul®de, and Ca-rich carbonatite melts were in equilibrium...and wehrlitized peridotite underneath Fernando de Noronha Island. These results support a two-stage model |  | | Journal (article/letter/editorial) | | presence of titanomagnetite and ilmenite instead of Cr-spinel. These rocks consist mainly of euhedral crystals... 2005). In olivine nephelinites from Fernando de Noronha Island we found mica containing 15.49% BaO (Kogarko...Ca and F. One of clinopyroxene grains has a Cr-spinel inclusion well discernible by high contents of...crystallization of early minerals (olivine, pyroxene, spinel) from high-Mg magmas, the BaO/K2O ratio remained...Barium phlogopite from the Jacupiranga carbonanite, Brazil. Am. Mineral. 67, 997–1000. Graeser, S., Hetherington |  | Rivalenti, Giorgio, Zanetti, Alberto, Girardi, Vicente A.V., Mazzucchelli, Maurizio, Tassinari, Colombo C.G., Bertotto, Gustavo W. (2007) The effect of the Fernando de Noronha plume on the mantle lithosphere in north-eastern Brazil. Lithos, 94 (1) 111-131 doi:10.1016/j.lithos.2006.06.012 | Journal (article/letter/editorial) | | effect of the Fernando de Noronha plume on the mantle lithosphere in north-eastern Brazil Giorgio Rivalenti...19, 41100 Modena, Italy Instituto de Geociências, Universidade de São Paulo, Rua do Lago 563, Cidade...Cidade Universitaria 05508-900, São Paulo, Brazil c Dipartimento di Scienze della Terra, Università di Pavia...d CONICET and Facultad de Ciencias Exactas y Naturales, Universidad Nacional de La Pampa, Uruguay 151...in the Cenozoic alkali basalts of north-eastern Brazil have been studied in order to constrain the possible |  | | Journal (article/letter/editorial) | | the type material from the Fernando de Noronha island (Pernambuco, Brazil). Structural formula of the...crystallization stage of a basaltoid magma with ocean island basalt (OIB) affinity. Most likely, the magma originated...nephelinites exhibit a good affinity with ocean island basalts (OIBs). 4.2. Mineralogy and chemistry of...that are biotite (sample B1 in a nephelinite from Brazil; Table 1) and kinoshitalite (RRUFF ID number R070656;...amphibole-bearing harzburgite and glass-bearing spinel-websterite (Scribano et al., 2009). On the basis |  | Knesel, Kurt M., Souza, Zorano S., Vasconcelos, Paulo M., Cohen, Benjamin E., Silveira, Francisco V. (2011) Young volcanism in the Borborema Province, NE Brazil, shows no evidence for a trace of the Fernando de Noronha plume on the continent. Earth and Planetary Science Letters, 302 (1) 38-50 doi:10.1016/j.epsl.2010.11.036 | Journal (article/letter/editorial) | | Borborema Province, NE Brazil, shows no evidence for a trace of the Fernando de Noronha plume on the continent...Geodinâmica e Geofísica (PPGG) and Departamento de Geologia, Natal, Brazil Pós-Graduação em Geodinâmica e Geofísica...Geofísica (PPGG) and Serviço Geológico do Brasil, Brazil a r t i c l e i n f o Article history: Received...northeastern Brazil, previously ascribed to passage over the purported Fernando de Noronha plume. The rocks...typically nepheline-normative basanites with ocean island basalt (OIB)-like trace-element compositions similar |  | Rivalenti, Giorgio, Mazzucchelli, Maurizio, Girardi, Vicente A.V., Vannucci, Riccardo, Barbieri, M. Adelaide, Zanetti, Alberto, Goldstein, Steve L. (2000) Composition and processes of the mantle lithosphere in northeastern Brazil and Fernando de Noronha: evidence from mantle xenoliths. Contributions to Mineralogy and Petrology, 138 (4) 308-325 doi:10.1007/s004100050565 | Journal (article/letter/editorial) | | mantle lithosphere in northeastern Brazil and Fernando de Noronha: evidence from mantle xenoliths Received:...June 1999 / Accepted: 13 December 1999 Abstract Spinel±peridotite facies mantle xenoliths in Cenozoic... Northeast Brazil) and the adjacent South Atlantic oceanic island of Fernando de Noronha are studied...geochemistry, and (2) to check the eects of the Fernando de Noronha plume track on the mantle lithosphere. Xenoliths...Instituto de GeocieÃncias, Universidade de SaÄo Paulo, Rua do Lago 562, 05506-900 SaÄo Paulo, Brazil R. Vannucci |  | | Journal (article/letter/editorial) | | and paragenesis. Laboratoire de Géosciences Appliquées à l’Ingénierie de l’Aménagement, Faculté des Sciences...sample description CNRS, Institut des Sciences de la Terre de Paris (iSTeP), Sorbonne Universités, UPMC Univ...olivine phenocrysts contain inclusions of zoned spinel, are commonly replaced with “iddingsite” and exhibit...and Ti-rich oxyphlogopite, Prv: perovskite, Spl: spinel, Ti-mag: Ti-rich magnetite and Foland (1996) previously...gabbroic rocks of the Ponte Nova alkaline massif, Brazil (Azzone et al. 2009), phlogopite from kimberlites |  | | Journal (article/letter/editorial) | | Downes and Vaselli, 1995; Török, 1995; Török and De Vivo, 1995; Szakál et al., 2000; Bali et al., 2002)...for fluid and sulfide inclusion study (Török and De Vivo, 1995; Szakál et al., 2000). From these megacrysts...olivine and spinel inclusions in 4 – 9 and 4 –13 vol.%, respectively (Table 1). The spinel inclusions...surrounded by a thin silicate glass film. Olivine and spinel, which sometimes form layers or multicrystalline...layers to those of spinel–olivine (Fig. 2A,B). Furthermore, both olivine and spinel also contain minor |  | | Journal (article/letter/editorial) | | zones containing second-generation clinopyroxene, spinel, olivine, S-bearing chlorapatite, high-Ba, high-Ti...minéralogique de xénolithes lherzolitiques et harzburgitiques provenant de la partie orientale de l’Antarctique...l’Antarctique, le manteau supérieur de cette région aurait été affecté par une très importante métasomatose carbonatée...zones à granulométrie fine contenant un clinopyroxène de seconde génération, spinelle, olivine, chlorapatite...riche en Fe, et un minéral monoclinique du groupe de la humite. (Traduit par la Rédaction) Mots-clés: |  | | Journal (article/letter/editorial) | | ALKALINE MAFIC-ULTRAMAFIC MASSIF, SOUTHEASTERN BRAZIL: INDICATION OF AN ENRICHED MANTLE SOURCE Rogério...Instituto de Geociências, University of São Paulo, Rua do Lago, 562 - 05508-080 São Paulo, Brazil Abstract...alkaline mafic-ultramafic massif in southeastern Brazil. The unusual mineralogical assemblage includes...mantle enrichment, Ponte Nova alkaline complex, Brazil. Sommaire Nous documentons les attributs des minéraux...gabbros du complexe alcalin mafique-ultramafique de Ponte Nova, dans le sud-est du Brésil. L’assemblage |  | Giuliani, A., Kamenetsky, V.S., Phillips, D., Kendrick, M.A., Wyatt, B.A., Goemann, K. (2012) Nature of alkali-carbonate fluids in the sub-continental lithospheric mantle. Geology, 40 (11) 967-970 doi:10.1130/g33221.1 | Journal (article/letter/editorial) | | emplaced in a spinel harzburgite wall rock (Fig. 1). Mineral thermometry indicates that the spinel harzburgite...carbonate (NaC, nahcolite or natrite), pleonaste spinel (spl), and kalsilite (kals). B: Primary mulhal...whereas kalsilite (kal), bradleyite (brd), Al-Mg-Fe spinel (spl), and priderite (prid) occur in subordinate...subordinate proportions. ates. Rutile, pleonaste spinel, and members of the magnetite-magnesioferrite series...metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil: Contributions to Mineralogy and |  | Delpech, G., Grégoire, M., O'Reilly, Suzanne Y., Cottin, J.Y., Moine, B., Michon, G., Giret, A. (2004) Feldspar from carbonate-rich silicate metasomatism in the shallow oceanic mantle under Kerguelen Islands (South Indian Ocean) Lithos, 75 (1) 209-237 doi:10.1016/j.lithos.2003.12.018 | Journal (article/letter/editorial) | | and spinel with an infiltrating melt to form Na – Cr-rich clinopyroxene + olivine + Cr-rich spinel F apatite...(Grégoire et al., 1998). Mantle xenoliths of the spinel harzburgite suite are protogranular Cr-diopside...(Moine, 2000; Moine et al., 2001). The clinopyroxene-spinel-bearing harzburgites investigated here were found...Primary minerals include olivine, orthopyroxene and spinel. However, the microstructure may locally vary to...contain olivine inclusions. Dark brown vermicular spinel is commonly associated with orthopyroxene and sometimes |  | Ashikhmin, D. S., Skublov, S. G., Melnik, A. E., Sirotkin, A. N., Alekseev, V. I. (2018) Geochemistry of Rock-Forming Minerals in Mantle Xenoliths from Basalts of Sverre Volcano, Spitsbergen Archipelago. Geochemistry International, 56 (8) 857-864 doi:10.1134/s0016702918080025 | Journal (article/letter/editorial) | | from Basalts of Sverre Volcano, Spitsbergen Archipelago D. S. Ashikhmina, S. G. Skublova, b, *, A. E...minerals from melt pockets in the central part of a spinel peridotite xenolith taken from Quaternary alkaline...Volcano in the northwestern part of West Spitsbergen Island. Olivine and clinopyroxene are analyzed to trace...related to the metasomatic interaction between spinel lherzolite and a carbonate melt with formation...interaction of the carbonate melt with minerals of host spinel lherzolite is accompanied by partial recrystallization |  | | Journal (article/letter/editorial) | | surrounding the segregations consists of olivine, spinel series, melilite, clinopyroxene, leucite, nepheline...oxykinoshitalite occur in border zones in addition to olivine, spinel series and melilite. Miarolitic and massive pegmatite-like...built of subhedral crystals of melilite, leucite, spinel series, clinopyroxene and hematite. Melilite, clinopyroxenes...olivine, Ca-olivines, and Ca-plagioclases) and spinel series. Numerous other phases may also be present...2–1.0 mm) and is composed of olivine, pyroxene, spinel series, melilite series and subordinate leucite |  | | Journal (article/letter/editorial) | | kamafugites are olivine, leu cite, clinopyroxene, chrome spinel, phlogopite, and, sporadically, melilite and perovskite...48 wt % NiO and more than 0.07 wt % CaO. Chrome spinel is represented by chro miumrich varieties with...similar to the EMI component of the source of ocean island basalts [15, 16]. In contrast, in terms of Pb isoto...rocks is similar to the EM2 component of ocean island basalts and the DUPAL anomaly. Such diversity in...slope of the Kazimiro crater; 4 (11530), Gzinga Island, Lake Edward; 5 (11642), eastern slope of the Visoke |  | | Journal (article/letter/editorial) | | mantle xenoliths comprising hydrous and anhydrous spinel peridotites. The MA studied mantle xenoliths...and coarse-grained fertile to depleted spinel lherzolites, spinel harzburgites and dunites, with protogranular...mantle xenoliths entrained in Cenozoic basalts are spinel peridotites. Mantle xenoliths can provide valuable... ranging from strongly depleted spinel harzurgites to fertile spinel lherzolites (Kurat etal., 1980,...dunite and two harzburgites, are depleted to fertile spinel lherzolites. While the lherzolites are fine to |  | | Journal (article/letter/editorial) | | fine-grained minerals of olivine, orthopyroxene, spinel, amphibole, phlogopite, sulfide minerals and apatite...minerals are mainly apatite with small amount of spinel and sulfide minerals. Apatite concentration (ap-rich...thin layer. ap = apatite, spl = coarse-grained spinel. reported apatite- and carbonate-bearing regions...mainly of olivine, amphibole, orthopyroxene and spinel with minor amount of clinopyroxene, phlogopite...layer. Abbreviations: FeNiS, Fe – Ni-sulfide; spl, spinel; ap, apatite; cpx, clinopyroxene; amph, amphibole |  | Martins, Sofia, Mata, João, Munhá, José, Mendes, Maria Hermínia, Maerschalk, Claude, Caldeira, Rita, Mattielli, Nadine (2010) Chemical and mineralogical evidence of the occurrence of mantle metasomatism by carbonate-rich melts in an oceanic environment (Santiago Island, Cape Verde) Mineralogy and Petrology, 99 (1) 43-65 doi:10.1007/s00710-009-0078-x | Journal (article/letter/editorial) | | carbonate-rich melts in an oceanic environment (Santiago Island, Cape Verde) Sofia Martins & João Mata & José Munhá...Springer-Verlag 2009 Abstract Lavas from Santiago Island attest to a complex magmatic history, in which... Young (<3.3 Ma) primitive lavas from Santiago Island are characEditorial handling: A. Möller Electronic...Mata : J. Munhá Faculdade de Ciências da Universidade de Lisboa, Departamento de Geologia (GeoFCUL), Campo...Mata : J. Munhá : R. Caldeira Centro de Geologia da Universidade de Lisboa (CeGUL), Campo Grande, C6, 1749-016 |  | Beier, Christoph, Mata, João, Stöckhert, Ferdinand, Mattielli, Nadine, Brandl, Philipp A., Madureira, Pedro, Genske, Felix S., Martins, Sofia, Madeira, José, Haase, Karsten M. (2013) Geochemical evidence for melting of carbonated peridotite on Santa Maria Island, Azores. Contributions to Mineralogy and Petrology, 165 (5) 823-841 doi:10.1007/s00410-012-0837-2 | Journal (article/letter/editorial) | | melting of carbonated peridotite on Santa Maria Island, Azores Christoph Beier • João Mata • Ferdinand...Heidelberg 2012 Abstract The islands of the Azores archipelago emerge from an oceanic plateau built on lithosphere...data from Santa Maria, the easternmost island of the archipelago, along with published data from the other...Martins Centro de Geologia, Departamento de Geologia, Faculdade de Ciências, Universidade de Lisboa, FCUL...Libre de Bruxelles, Avenue F.D. Roosevelt 50, 1050 Brussels, Belgium P. Madureira Estrutura de Missão |  | | Journal (article/letter/editorial) | | oxidizing conditions. The calculation of the olivine–spinel equilibrium (T– f O2 ) showed that crystallization...composition of the studied spinellides varies from Cr-spinel with low Al content found in olivine to almost...indicates the uninterrupted crystallization of the spinel phase at all stages of the evolution of ugandite...found in the carbonates from mantle xenoliths of spinel peridotites of La Gomera GEOCHEMISTRY INTERNATIONAL...from stoichiometry; ** inclusions in olivines. Island (Canary Islands) [1]. The carbonates from melt |  | | Journal (article/letter/editorial) | | N isotopic data recorded from carbonatites from Brazil, Canada, and Russia indicate derivation from primitive...defined on the basis of isotopic data from oceanic island basalts (OIBs; Zindler and Hart 1986; Hart 1988;...presence of HIMU and EM1 signatures in both oceanic island basalts (OIBs), and in many carbonatites would...mantle sources, similar to those found in oceanic island basalts (HIMU and EMI). The data from Oldoinyo...by Sasada et al. (1997). Carbonatites from both Brazil and Canada are characterized by both depleted and |  | | Journal (article/letter/editorial) | | Laboratoire de Géochimie et Cosmochimie (UMR 7579 CNRS), Institut de Physique du Globe de Paris, Université...75252 Paris Cedex 05, France e Centro de Geologia da Universidade de Lisboa, Portugal Received 24 March...Laboratoire Magmas et Volcans, Observatoire de Physique du Globe de Clermont-Ferrand, 5, rue Kessler, 63038...reported by Kogarko, 1993) of the Cape Verde archipelago, and on only one (Fuerteventura) amongst seven...Verde and Canary archipelagos (Hoernle et al., 2002; De Ignacio et al., 2006; Mata et al., 2010). The way |  | Kononova, V. A., Kurat, G., Embey-Isztin, A., Pervov, V. A., Koeberl, C., Brandstätter, F. (2002) Geochemistry of metasomatised spinel peridotite xenoliths from the Dariganga Plateau, South-eastern Mongolia. Mineralogy and Petrology, 75 (1) 1-21 doi:10.1007/s007100200012 | Journal (article/letter/editorial) | | (2002) 75: 1±21 Geochemistry of metasomatised spinel peridotite xenoliths from the Dariganga Plateau...uplifted Dariganga Plateau is outside of this well-de®ned intercontinental rift zone. Below this particular...lavas are differentiated. Ultrama®c xenoliths (spinel and garnet lherzolite, websterite, clinopyroxenite...composed of olivine, orthopyroxene, clinopyroxene and spinel. Hydrous minerals, such as amphibole and phlogopite... green, coarse-grained, protogranular, sheared spinel harzburgite (Fig. 2A). Olivine and orthopyroxene |  | | Journal (article/letter/editorial) | | variable degree consumed by kelyphite composed of spinel clinopyroxene and orthopyroxene (Fig. 2c). Garnets...Mgs magnesite, Dol dolomite, Nrs norsethite, Spl spinel, Chr chromite, Thr thorianite, Urn uraninite, Gr...clinopyroxene (omphacite), garnet II, graphite, spinel, Cl-apatite, thorianite/uraninite, monazite, pentlandite...peridotites, mainly those reported from the MSI hosted in spinel (Zaccarini et al. 2004; Naemura et al. 2008), also...of pargasite, dolomite and magnesite along with spinel suggests pressures below c. 1.8–2 GPa and a still |  | Downes, H., Kostoula, T., Jones, A., Beard, A., Thirlwall, M., Bodinier, J.-L. (2002) Geochemistry and Sr–Nd isotopic compositions of mantle xenoliths from the Monte Vulture carbonatite–melilitite volcano, central southern Italy. Contributions to Mineralogy and Petrology, 144 (1) 78-92 doi:10.1007/s00410-002-0383-4 | Journal (article/letter/editorial) | | 21 August 2002 Springer-Verlag 2002 Abstract Spinel peridotite xenoliths found in the Monte Vulture...Monte Vulture started in Middle Pleistocene times (De Fino et al. 1982; La Volpe and Principe 1991), and...Magmatism of Monte Vulture has also been discussed by De Fino et al. (1986), Caggianelli et al. (1990), Melluso...Monte Vulture mantle xenolith suite comprises fresh spinel lherzolites, harzburgites, wehrlites, dunites and...xenoliths have been derived from the lower part of the spinel peridotite stability field (50–70 km depth), coincident |
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