 | | Journal (article/letter/editorial) | | (as in the miaskitic pegmatites of the Ilmen and Vishnevo mountains) a V.Ya. Levin & L.A. Kutepova a ...(as in the miaskitic pegmatites of the Ilmen and Vishnevo mountains), International Geology Review, 18:7...pegmatites in the alkaline massifs of the llmen and Vishnevo mountains in the South and Central Urals, which...and. in Vein No. 1 at the "Shpat" mine in the Vishnevo mountains, 68:32. On the boundary between the...intergrowth in a vein at the "Shpat'" mine in the Vishnevo mountains and in Pit 118 at Ilmen. In the latter |  | | Journal (article/letter/editorial) | | Greisenization Mineral Pyroxene Amphibole Mica Plagioclase Albite Alkali feldspar Nephehe Cancrinite Quartz Garnet...NazO of up to 3% A microperthite with ingrowths of albite is more normal; its composition is variable. In...NazO amounted to 5.84% (table 4, anals. 5, 6). Albite and cancrinite occur in the form of separate platelets...minerals, among which nepheline, Na-K-feldspar, and albite p r e dominate, but cancrinite is present sometimes...Na-K-feldspar with a minor amount of cancrinite and albite. Dark-colored minerals, aegirine and lepidomelane |  | Bea, F., Montero, P., Haissen, F., El Archi, A. (2013) 2.46Ga kalsilite and nepheline syenites from the Awsard pluton, Reguibat Rise of the West African Craton, Morocco. Generation of extremely K-rich magmas at the Archean–Proterozoic transition. Precambrian Research, 224. 242-254 doi:10.1016/j.precamres.2012.09.024 | Journal (article/letter/editorial) | | first manifestation of a Paleoproterozoic alkaline province located in the Reguibat Rise, the full extent...possible occurrence of a Paleoproterozoic alkaline province in the West Reguibat Rise with no equivalent in...therefore, that Awsard forms part of an alkaline province located in the Reguibat Rise, the importance and...(Fig. 2A) or are cemented by K-rich nepheline plus albite (Fig. 2B). Nepheline (Na3.05 K0.94 Al3.89 Si4.05...or as graphic intergrowths with K-feldspar and albite. The percentage of nepheline in 244 F. Bea et |  | | Book | | Precision Alkali Feldspars Introduction. . . . Albite. . . . . . . Potassium Feldspar . Alkali Feldspars...Stability of Intermediate Microcline. . Polymorphism of Albite. . . . . . . . . Phase Transformations in the Ab-Or...254 259 260 261 262 262 263 264 265 265 266 267 Albite and Alkali Feldspars . . . . Plagioclase and MAlzSizOs...AISi 3 Os1j2HzO Sanidine Microcline High albite Low albite P-anorthite Celsian Reedmergneri te Buddingtonite...microcline (ordered); NaAISi 3 0s-high albite (disordered), low albite (ordered); CaAI 2 Si 2 0s-anorthite; |  | | Book (volume) | | Mica-feldspar-genthelvine type of deposits Amphibole-albite-leucophane type of metamorphism Deposits of association... a small (65 - 85%), a little orthoclase and albite; and of newly-formed minerals, consisting chlorite...rocks with a paragenesis of calcite, sericite, albite, quartz, The lens-like segregations in the interformational...chlorite-serpentine, quartz, pyrite, carbonate, and albite; b) wolframite-quartz, spatially combined with...According to M,M, Konstantinov, its metallogenic province of the Caucasus, structural position is determined |
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