 | Gatta, G. D., Rotiroti, N., McIntyre, G.J., Guastoni, A., Nestola, F. (2008) New insights into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron diffraction study. American Mineralogist, 93 (7) 1158-1165 doi:10.2138/am.2008.2965 | Journal (article/letter/editorial) | | (1894) on specimens from Greenland (presumably from the Narssârssuk pegmatite). Epididymite and eudidymite...significant include the Narssârssuk pegmatite and the Illimaussaq complex in Greenland (Lévy 1961; Petersen...many other rare, exotic minerals including Na-Be-Zr-Y silicates, Nb-Ta oxides, and REE-carbonates. The crystal...epididymite, collected from a miarolitic granitic pegmatite hosted by A-type peralkaline granites (Martin...province of Cretaceous age (Eby et al. 1995). These pegmatite bodies are subhorizontal, strongly miarolitic |  | Wall, F., Niku-Paavola, V. N., Storey, C., Muller, A., Jeffries, T. (2008) XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY LOW LREE:HREE RATIO IN CARBONATITE, AND THE FIRST DATING OF XENOTIME OVERGROWTHS ON ZIRCON. The Canadian Mineralogist, 46 (4) 861-877 doi:10.3749/canmin.46.4.861 | Journal (article/letter/editorial) | | 861-877 (2008) DOI : 10.3749/canmin.46.4.861 XENOTIME-(Y) FROM CARBONATITE DYKES AT LOFDAL, NAMIBIA: UNUSUALLY...RATIO IN CARBONATITE, AND THE FIRST DATING OF XENOTIME OVERGROWTHS ON ZIRCON Frances WALL§ Department...Cromwell Road, London SW7 5BD, UK Abstract Xenotime-(Y) is a common accessory mineral in many igneous...in carbonatite. Uniquely, at Lofdal, Namibia, xenotime-(Y) occurs in many carbonatite dykes. It mantles...carbonatites. The paragenetic sequence places the xenotime-(Y) at the end of magmatic activity and certainly |  | | Book | | Octahedra with 8 edges shared per MnO6 octahedron IX Y–F *380 Trigonal prism (in waimirite) VI Mn2+–O...600–715 In augelite, andalusite and vyuntspakhkite-(Y) 610–620 Isolated octahedron V VI Zr–O IV 3+...42(H2O)0.18[Al2(Be2.35Li0.65)Si6O18] from Mokrusha pegmatite, Murzinka, Middle Urals (Yakubovich et al. 2009;...General Aspects of the Application … Fig. 1.15 X-, Y- and Z-polarized OH absorption spectra of diopside... Austria, measured on (100) and (010) plates (X, Y and Z are optical axes). The picture is drawn using |
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