Class: Silicates
Group: Gadolinite-datolite
Original description: ‘Gadolinit’ Klaproth, M. H., 1802. Chemische Untersuchung des Gadolinits — Beiträge zur Chemischen Kenntniss der Mineralkörper 3: 52—79 [
view in ‘Library’].
Type locality: Ytterby, Vaxholm, Stockholm, Sweden.
Type material: unknown.
Etymology: in honour of Johan Gadolin, Finnish chemist, discoverer of yttrium.
Distribution: Austria: near Bad Gastein, Salzburg; Canada: Ontario; Norway; Sweden: Vaxholm, Ytterby; Switzerland: Ticino (
Anthony et al., 2001—2005).
Chemistry
Y2Fe2+Be2Si2O10
Essential elements: beryllium (Be), oxygen (O), silicon (Si), iron (Fe), yttrium (Y).
Crystal data
Crystallography: monoclinic — prismatic.
Crystal habit: crystals rough; typically prismatic, terminated by {001}, {111}, {221}, and many other forms, to 25 cm; commonly massive (
Anthony et al., 2001—2005).
Material from ‘Repository’