 | | Journal (article/letter/editorial) | | aegirine and a pale blue-green, manganoan magnesio-arfvedsonite. Quartz and any mafic minerals of the parent...has previously been metasomatically enriched (Barreiro and Cooper, 1987). Crustal interaction is limited...and post-cumulus processes. Lithos, 31, 207-25. Barreiro, B.A. and Cooper, A.F. (1987) A Sr, Nd, and Pb...Southwest Namibia. Geology, 19, 1193-6. Cooper, A.F., Barreiro, B.A., Kimbrough, D.L. and Mattinson, J.M. (1987)...Carbonatites, Pocos de Caldas, Minas Gerais, Brazil. Ministerio das Minas e Energia, 188, 207-12. Gold |  | | Journal (article/letter/editorial) | | converted distally to a peralkaline aegirine-arfvedsonite-albite assemblage, and proximally to aegirine-albite...intrusion of mantle-derived lamprophyric magmas (Barreiro and Cooper, 1987) is thought to relate to tensional...aegirine-albite(Ab99.sAno.5)-niobian rutile-magnesio-arfvedsonite-siderite (Fel.172Mno.o22Mgo.8o2Cao.os8 ...u R i v e r area. Whirligig Torrent OU66212: Magnesio-riebeckite vein Magnesioriebeckite-ankerite(Feo...characterized by additional magnesioriebeckite/magnesio-arfvedsonite and barian muscovite, to a country rock |  | | Journal (article/letter/editorial) | | Cooper 1971). More recently, U–Pb and Rb–Sr ages (Barreiro & Cooper 1987, Cooper et al. 1987) and K–Ar studies...schists characterized by the presence of magnesio-arfvedsonite or riebeckite (Fig. 3A) occurring with aegirine...Institution of Washington, using techniques outlined by Barreiro & Cooper (1987). Mineral Chemistry Representative...in patterns of magnesian carbonatite at Juquia, Brazil (Beccaluva et al. 1992). The low LREE contents...Sr–Nd–Pb isotope ratios have been determined by Barreiro & Cooper (1987). Dykes from the Haast River segment |  | Macdonald, R., Bagiński, B., Leat, P.T., White, J.C., Dzierżanowski, P. (2011) Mineral stability in peralkaline silicic rocks: Information from trachytes of the Menengai volcano, Kenya. Lithos, 125 (1) 553-568 doi:10.1016/j.lithos.2011.03.011 | Journal (article/letter/editorial) | | This, combined with presence of fluorine-rich arfvedsonite in the groundmass, led White et al. (2006) to...discontinuous narrow rim of arfvedsonite. Leat (1983) presented two arfvedsonite analyses in a pre-caldera... Scaillet and Macdonald (2006b) synthesised arfvedsonite at 150 MPa under water-rich conditions and fO2...magnesiorichterite, ferrorichterite and magnesio-arfvedsonite. The Pantellerian pantellerite studied experimentally...the amphibole synthesised was Fe–eckermannite–arfvedsonite, the Na content increasing with increasing melt |  | | Book | | crandallite from the Alto Benedeto pegmatite, Parai'ba, Brazil (by J.P. Cassedanne & L. Barreto) 22: 183-185 ALTO...Burian goyazite from [Alto Bernardino, Paraiba,] Brazil (by J. S. White, Jr.) 12:379 ALUMOHYDROCALCITE...and muscovite from the Ze Pinto prospect, Minas Gerais, Brazil 21:405-408 --with J.P. Cassedanne: Crystallized...Pitora, Minas Gerais, Brazil 21:409-412 --with J. P. Cassedanne: The Jaguara~u pegmatite, Minas Gerais, Brazil...and platinum from C6rrego Born Sucesso, Minas Gerais, Brazil 23:471-474 AMARGOSA DESERT Hydroboracite |  | | Book | | of about 2000), with production being moved to Brazil. The remainder of southern and central England... EMP data). Rare acmite is reported from an arfvedsonite-bearing minette at St Helier, Jersey (Wagner...aegirine compositions. Aenigmatite, zircon-rich arfvedsonite, calcium catapleiite, fluorapatite and monazite...to pale yellow-green aegirine associated with arfvedsonite, calcite, orthoclase and quartz (Farrow et al...Ryback & \1oreton ( 1992) report aegirine with arfvedsonite. quanz and riebech.ite in ca,ities "ithin a |
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