 | 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) | | into the crystal chemistry of epididymite and eudidymite from Malosa, Malawi: A single-crystal neutron...3467(3) Å, V = 1275.04 Å3, space group Pnma)] and eudidymite [a = 12.6188(10), b = 7.3781(5), c = 13.9940(9)...1732 unique reflections with Fo > 4σ(Fo) for eudidymite. The analysis of the difference-Fourier maps...The correct chemical formula of edipidymite and eudidymite is Na2Be2Si6O15·H2O (Z = 4). The configuration...occurs in both dimorphs. Keywords: Epididymite, eudidymite, crystal chemistry, single-crystal neutron diffraction |  | Armstrong, J. A., Friis, H., Lieb, A., Finch, A. A., Weller, M. T. (2010) Combined single-crystal X-ray and neutron powder diffraction structure analysis exemplified through full structure determinations of framework and layer beryllate minerals. American Mineralogist, 95 (4) 519-526 doi:10.2138/am.2010.3276 | Journal (article/letter/editorial) | | bavenite in the Ilímaussaq alkaline complex, South Greenland, and determined the unit cell from powder X-ray...first described from the Narssârssuk Pegmatite, Gardar Province, South Greenland, by Bøggild (1915), although...in a quartzite surrounding parts of the Narssârssuk pegmatite, i.e., the material is not from the actual...Kvanefjeld, Ilímaussaq alkaline complex, South Greenland, which is still the only known occurrence for...44 0.63 0.97 Notes: Locality key: NAR, Narssârssuk Pegmatite; ILI, Ilímaussaq Alkaline Complex; MSH, |  | | Book | | 42(H2O)0.18[Al2(Be2.35Li0.65)Si6O18] from Mokrusha pegmatite, Murzinka, Middle Urals (Yakubovich et al. 2009;...phosphates: nahpoite Na2(HPO4) from peralkaline pegmatite of the Lovozero massif (a), newberyite Mg(HPO4)·3H2O...Al)4(B,Be)12O28 (Fig. 2.5) Locality: Sahutany pegmatite field, Madagascar. Description: Yellowish semitransparent...Description: White granular aggregate from peralkaline pegmatite. Investigated by I.V. Pekov. Kind of sample preparation...58) Locality: Narssârssuq pegmatite, Igaliko alkaline complex, South Greenland. Description: Colourless |
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Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland