 | | Report (issue) | | 0475(13) X-ray Powder Pattern: Fernando de Noronha Island, Pernambuco, Brazil. 2.637 (100), 2.172 (90), 3...0.0021 0.39 0.01 96.49 (1) Fernando de Noronha Island, Pernambuco, Brazil; average of 25 electron microprobe...oxide, nepheline, calcite, apatite, K-rich feldspar. Distribution: From Fernando de Noronha Island, Pernambuco...Pernambuco, Brazil and from the Hyblean Plateau, Sicily, Italy. Name: The oxy-analog of kinoshitalite. Type...a new species of mica from Fernando de Noronha Island, Pernambuco, Brazil: occurrence and crystal structure |  | Kogarko, L. N., Uvarova, Y. A., Sokolova, E., Hawthorne, F. C., Ottolini, L., Grice, J. D. (2005) OXYKINOSHITALITE, A NEW SPECIES OF MICA FROM FERNANDO DE NORONHA ISLAND, PERNAMBUCO, BRAZIL: OCCURRENCE AND CRYSTAL STRUCTURE. The Canadian Mineralogist, 43 (5) 1501-1510 doi:10.2113/gscanmin.43.5.1501 | Journal (article/letter/editorial) | | A NEW SPECIES OF MICA FROM FERNANDO DE NORONHA ISLAND, PERNAMBUCO, BRAZIL: OCCURRENCE AND CRYSTAL STRUCTURE...a new species of mica from Fernando de Noronha Island, Pernambuco, Brazil; it is found in an olivine...nephelinite with olivine, clinopyroxene, Fe–Ti oxide, nepheline, calcite, apatite and K-rich feldspar. Oxykinoshitalite...associated with olivine, clinopyroxene, Fe–Ti oxide, nepheline, calcite, apatite and K-rich feldspar. There is...crystal-structure refinement, oxygenian mica, Fernando de Noronha Island, Brazil. § E-mail address: elena_sokolova@umanitoba |  | | 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) | | the Hot Spot of the Southwestern Atlantic: Fernando de Noronha Islands Academician of the RAS L. N. Kogarko...alkaline magmatism in the hot spot of the Fernando de Noronha Islands have been obtained. For the first... The Fernando de Noronha Archipelago is situated 345 km away from the Atlantic coast of Brazil and is...confined to a transform fracture zone. The Fernando de Noronha lineament is traced far to the west by the...subdivision of volcanic rocks in the Fernando de Noronha Archipelago was proposed by Almeida [1] who recognized |  | | Journal (article/letter/editorial) | | porphyritic texture formed by olivine, clinopyroxene, nepheline, titanian magnetite, apatite, and rare subhedral...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...remarkable amounts of Ba (.900 ppm) partitioned in nepheline (0.10 wt%), calcite (0.50 wt%), apatite (up to...which are immersed in a groundmass constituted by nepheline, Ti-magnetite, apatite, and rare grains of mica |  | 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...5–14.7 wt.% MgO), typically nepheline-normative basanites with ocean island basalt (OIB)-like trace-element |  | | Journal (article/letter/editorial) | | melteigites 2 Nephelinites and olivine nephelinites, nepheline picrites, and mica-pyroxene picrites 1 Melteigites... 2005). In olivine nephelinites from Fernando de Noronha Island we found mica containing 15.49% BaO (Kogarko...Barium phlogopite from the Jacupiranga carbonanite, Brazil. Am. Mineral. 67, 997–1000. Graeser, S., Hetherington...metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil. Contrib. Mineral. Petrol. 140, 577–587...a new species of mica from Fernando de Noronha Island, Pernambuco, Brazil: occurrence and crystal structure |  | | Journal (article/letter/editorial) | | tholeiite melts account for about 25%. Among ocean-island volcanic rocks, differentiated varieties clearly...each large center of intraplate magmatism (archipelago or island chain) demonstrates local heterogeneities...variations in ocean-floor tholeiites and oceanic-island alkali basalts could not be caused by any variations...LREE/HREE, and Zr/Nb. The mantle sources of ocean-island alkaline magmatism are, by contrast, enriched in...have high MgO contents, low values of normative nepheline (~5%), and occasionally contain normative quartz |  | | Journal (article/letter/editorial) | | texture composed of olivine, Ti-rich augite, nepheline and Ti-rich magnetite. Oxyphlogopite is found...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...0–20.0 wt% TiO2) and perovskite (Figs. 3a-d). Nepheline is the most abundant groundmass phase; it is partially...Ap: apatite, Agt: augite, Gon: gonnardite, Ne: nepheline, Ol: olivine, Phl: Ba- and Ti-rich oxyphlogopite |  | | Journal (article/letter/editorial) | | Oligocene-Miocene alpine cleft veins near Cleuson, Val de Nendaz, Valais. The following minerals are also found...NEW MINERAL NAMES mica from Fernando de Noronha Island, Pernambuco, Brazil: occurrence and crystal structure...oxide, nepheline, calcite, apatite, and K-rich feldspar on Fernando de Noronha Island, Pernambuco, Brazil...the Quixaba Formation, which is dominated by nepheline basalt flows with minor nephelinite dykes, tuffs...T. Fehr (2005) Isokite, CaMg[F|PO4], from Senhora de Assunção, Portugal: new find and new data. Neues |  | | 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 |  | Chukanov, N. V., Mukhanova, A. A., Rastsvetaeva, R. K., Belakovsky, D. I., Möckel, S., Karimova, O. V., Britvin, S. N., Krivovichev, S. V. (2011) Oxyphlogopite K(Mg,Ti,Fe)3[(Si,Al)4O10](O,F)2: A new mineral species of the mica group. Geology of Ore Deposits, 53 (7) 583-590 doi:10.1134/s1075701511070063 | Journal (article/letter/editorial) | | in alkali basalt. The associated minerals are nepheline, plagioclase, sanidine, augite, diopside, and...mineral 583 584 CHUKANOV et al. consists of nepheline, plagioclase, sanidine, diopside, and magnetite...basalt is com posed largely of plagioclase, nepheline, and augite. In addition to mica, the late pneumatolitic...a New Species of Mica from Fernando De Noronha Island, Pernambuco, Brazil: Occurrence and Crystal Struc |  | | Journal (article/letter/editorial) | | melanephelinites, olivine melanephelinites, and nepheline picrites); (4) small stock-like ijolite bodies;...small stocks and veins of alkaline and rarely nepheline syenites. (6) thick half-ring body of forsteritites...metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil,” Contrib. Mineral. Petrol. 140, |  | | Journal (article/letter/editorial) | | spinel series, melilite, clinopyroxene, leucite, nepheline and sulphides. Ca-olivines, kalsilite and mica...series, melilite series and subordinate leucite, nepheline and sulphides (Warchulski and Szopa 2014). The...surrounded by mellite and blebs of (Mn,Fe,Zn)S; (c) nepheline, spinel, leucite and (Mn,Fe,Zn)S in the interstices...kalsilite; lct – leucite; mll – melilite; nph – nepheline; oks – oxykinoshitalite; ol – olivine; spl – spinel;...and Zn for Mg and Fe (Table 3). Kalsilite and nepheline are rare in the slag (Fig. 4c and d). Both have |  | | Journal (article/letter/editorial) | | groundmass of the rock comprises also kalsilite, nepheline, ilmenite, phillipsite, and, sometimes, carbonates...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...rift system, midocean ridge basalts (MORB), ocean island basalts (OIB), and various model mantle reservoirs |  | | Journal (issue) | | 10566-2088. the Toroku tin-arsenic mine on Kyushu Island, Japan, and used by the Toshiba Company for ampoule...career exploits was resident chemist on the guano island of Sombrero, a tiny 95 acre rock that lies in the...miles east of St. Thomas (Virgin Islands). The island was about one mile long and a quarter as wide,...observations during his four years on the tiny island. It was remarked "only a student of nature would...use. care and decay of many rock types. His pie e de resistanc' was a lengthy series of articles published |  | 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) | | Michèle locality; (2) Mont-Peeper locality. a nepheline-hawaiitic dyke, and at the Mont-Peeper locality...plagioclase and quartz normative with one being nepheline-normative (Table 1). Glass in LM xenoliths generally...1999), Samoa (Hauri et al., 1993) and Fernando de Noronha, Brazil (Kogarko et al., 2001). Schiano et al...Ottonello, G., Hamlyn, P.R., 1986. Peridotites from the island of Zabargad (St. John), Red Sea: petrology and...Petrology and geochemistry of the Kerguelen Archipelago basalts (Southern Indian Ocean): evolution of |  | | Journal (article/letter/editorial) | | concerning primary melts for unique peralkaline nepheline syenite plutons of the Kola alkaline province...to the eud ialyte ores hosted in the largest nepheline syenite plu tons, i.e., the Lovozero in the Kola...a typomorphic Zr mineral in almost all known nepheline syenite plutons and much less abun dant in phonolites...phonolites, i.e., volcanic counterparts of nepheline syenites especially as a rockforming min eral....1955); Point rocks in New Mexico; and Arah, Texas (De Mark, 1984; Smith, 1991). In the territory of the |  | | Journal (article/letter/editorial) | | Bt-pyroxenite complex; 5, pseudoleucite syenites; 6, nepheline syenites; 7, alkalic syenites; 8, effusive complex...exclusion) of sodic leucophases: plagioclase and nepheline. Kalsilites used to be also excluded, but now...ijolite-melteigites intruded along a ring fault, then nepheline and alkalic syenites, which take up 70% of the...metasomatism of the oceanic mantle beneath Fernando de Noronha Island, Brazil, in: DeepSeated Magmatism, Its Sources |  | | 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 |  | 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 |  | | Journal (article/letter/editorial) | | phases are clinopyroxene, phlogopite, leucite, nepheline, potassic feldspar, and sphene. When heated, daughter...(Solovova et al., 1992, 1993, 1996). Leucite, nepheline, and Ferich olivine were found only in inclusions...et al., 2005) for volcanic rocks from the Kurile island arc. Position of the Melts in the Family of High-K...with enrichment in Al2O3 (and, consequently, nepheline crystallization) and depletion in CaO at a relatively...Metasomatism of the Oceanic Mantle beneath Fernando de Noronha Island, Brazil,” Contrib. Mineral. Petrol. 140, |  | Guzmics, Tibor, Mitchell, Roger H., Szabó, Csaba, Berkesi, Márta, Milke, Ralf, Ratter, Kitti (2012) Liquid immiscibility between silicate, carbonate and sulfide melts in melt inclusions hosted in co-precipitated minerals from Kerimasi volcano (Tanzania): evolution of carbonated nephelinitic magma. Contributions to Mineralogy and Petrology, 164 (1) 101-122 doi:10.1007/s00410-012-0728-6 | Journal (article/letter/editorial) | | coprecipitated perovskite, nepheline and magnetite in a clinopyroxene- and nepheline-rich rock (afrikandite)...by coprecipitated nepheline, perovskite and magnetite from a clinopyroxene–nepheline–perovskite–magnetite–melilite...subhedral-to-euhedral clinopyroxene together with anhedral nepheline (80–400 lm). Lesser amounts of subhedral-to-euhedral...contains inclusions of magnetite, perovskite and nepheline). Exceptions are the brown cores of clinopyroxene...(5–40 lm, Figs. 1d, 2b, c), magnetite (20–40 lm), nepheline (2–50 lm, Fig. 3) and green clinopyroxene (5–30 |  | 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) | | uplifted Dariganga Plateau is outside of this well-de®ned intercontinental rift zone. Below this particular...only mildly undersaturated, with a normative nepheline content ranging from 1.3 to 5.8 wt%, whereas the...harzburgite 2237a had a de®cit in olivine and spinel, that of lherzolite 2132 a de®cit in olivine, that...that of lherzolite 2237b a de®cit in spinel and that of lherzolite 2229 had a surplus in clinopyroxenes,...similar to what has been reported from Zabargad Island peridotites (Kurat et al., 1993). All three rocks |  | | Book | | and higher logarithmic units relative to QFM). Island ark andesites and basalts (+3 logarithmic units...oceanic crust and the alkaline rock of oceanic island (+2 logarithmic units relative to QFM) are the...oxidation of the highly alkaline lavas of Trindad Island [22] with the oxygen fugacity exceeding f O2 of... Kogarko above hot spots, e.g., the Azores archipelago in the Atlantic Ocean. According to seismic tomography...Montana Clara Islands (Canary Islands) and Fernando de Noronha (Brazil), we found glasses (in association with |
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