 | | Journal (volume) | | julkaisuja Meddelanden frän Geologiska Sällskapet i Finland Comptes Rendus de la Societe Geologique de Finlande...JULKAISUJA ME DD ELAN D EN FRÄN GEOLOGISKA SÄLLSKAPET I FINLAND COMPTES RENDUS D E LA SOCIETE G E OLOGIQUE DE FINLANDE...MAUNO LEHIjARVI Geological Survry of Finland Otaniemi, Finland Editorial Cornrnittee VLADI MARMO MARTTI...MARTTI SAKSELA ESA HYYPpA Geological Survry of Finland Institute of Geology and Mineralogy University...University of Helsinki Geological SlIrvry of Finland jUHANI SEITSAARI V ALTO VEL THEIM, ex officio Institllte |  | | Journal (volume) | | julkaisuja Meddelanden frän Geologiska Sällskapet i Finland Comptes Rendus de la Societe Geologique de Finlande...JULKAISUJA ME DD ELAN D EN FRÄN GEOLOGISKA SÄLLSKAPET I FINLAND COMPTES RENDUS D E LA SOCIETE G E OLOGIQUE DE FINLANDE...MAUNO LEHIjARVI Geological Survry of Finland Otaniemi, Finland Editorial Cornrnittee VLADI MARMO MARTTI...MARTTI SAKSELA ESA HYYPpA Geological Survry of Finland Institute of Geology and Mineralogy University...University of Helsinki Geological SlIrvry of Finland jUHANI SEITSAARI V ALTO VEL THEIM, ex officio Institllte |  | Bacik, P., Fridrichova, J., Uher, P., Prsek, J., Ondrejka, M. (2014) THE CRYSTAL CHEMISTRY OF GADOLINITE-DATOLITE GROUP SILICATES. The Canadian Mineralogist, 52 (4) 625-642 doi:10.3749/canmin.1400022 | Journal (article/letter/editorial) | | 3749/canmin.1400022 THE CRYSTAL CHEMISTRY OF GADOLINITE-DATOLITE GROUP SILICATES PETER BAČÍK§, JANA FRIDRICHOVÁ...affords new insights into the crystal chemistry of gadolinite-datolite group (GDG) silicates by re-examination...between well ordered datolite and weakly ordered gadolinite-subgroup (GSG) minerals. This is documented by...octahedron. Consequently, the formula for minasgeraisite-(Y) with the originally proposed Ca occupancy of the...chemically variable GSG from DSG. Keywords: gadolinite-datolite group, crystal chemistry, substitutions |  | | Journal (article/letter/editorial) | | Vol. 82(S1), pp. S133–S145 Gadolinite-(Nd), a new member of the gadolinite supergroup from Fe-REE deposits...Bowles] ABSTR ACT A new member of the gadolinite supergroup, gadolinite-(Nd), IMA2016-013, ideally Nd2FeBe2Si2O10...dollaseite-(Ce), bastnäsite-(Ce) and tremolite. Gadolinite-(Nd) forms anhedral grains up to 150 µm in size...transparent with vitreous to adamantine lustre. Gadolinite-(Nd) is brittle with conchoidal fracture, no...confirms the presence of water in the structure. Gadolinite-(Nd) is monoclinic, P21/c, with a = 4.8216(3) |  | Raschke, Markus B., Anderson, Evan J. D., Van Fosson, Jason, Allaz, Julien M., Smyth, Joseph R., Škoda, Radek, Persson, Philip M., Becker, Randy (2018) Rare-earth crystal chemistry of thalénite-(Y) from different environments. Mineralogical Magazine, 82 (2) 313-327 doi:10.1180/minmag.2017.081.044 | Journal (article/letter/editorial) | | 313–327 Rare-earth crystal chemistry of thalénite-(Y) from different environments MARKUS B. RASCHKE1,*...Associate Editor: Stuart Mills] ABSTR ACT Thalénite-(Y), ideally Y3Si3O10F, is a heavy-rare-earth-rich silicate...crystal structure and mineral chemistry of thalénite-(Y) were analysed by electron microprobe analysis, X-ray...White Cloud pegmatite in the Pikes Peak batholith, Colorado, USA. The Golden Horn thalénite-(Y) occurs as...(LREE) enriched zones. The White Cloud thalénite-(Y) occurs in two distinct anhedral and botryoidal crystal |
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Pyörönmaa pegmatite, Valkeakoski, Pirkanmaa, Finland