Publication details

Beryllium minerals from NYF intragranitic pegmatitesof the ultrapotassic Třebíč Pluton, Czech Republic



Year of publication 2018
Type Conference abstract
MU Faculty or unit

Faculty of Science

Description Intragranitic NYF pegmatites of Variscan, ultrapotassic Třebíč Pluton contain minerals of beryllium: primary beryl, phenakite and helvite; secondary beryl, bazzite, phenakite, milarite and bavenite. These mineralogical assemblages assocciate with amazonite, Y+REE-Nb-Ta-Ti-oxides, partly with cassiterite and columbite, too. Composition of beryl group minerals shows extremely high enrichment in alkalis (up to 0.5 apfu), Mg (up to 0.6 apfu) and Ca (up to 0.3 apfu). Considering bazzite, there is possibility of existence of a new mineral, NaBe3MgScSi6O18. Complex assemblages of above mentioned minerals reflect several hydrothermal events in their enviroment.
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