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@proceedings{1441997, author = {Zachař, Adam and Novák, Milan}, booktitle = {5th Central-European Mineralogical Conference}, keywords = {beryllium; pegmatite; beryl; bazzite; unusual composition; Třebíč}, language = {eng}, isbn = {978-80-223-4548-4}, title = {Beryllium minerals from NYF intragranitic pegmatitesof the ultrapotassic Třebíč Pluton, Czech Republic}, year = {2018} }
TY - CONF ID - 1441997 AU - Zachař, Adam - Novák, Milan PY - 2018 TI - Beryllium minerals from NYF intragranitic pegmatitesof the ultrapotassic Třebíč Pluton, Czech Republic SN - 9788022345484 KW - beryllium KW - pegmatite KW - beryl KW - bazzite KW - unusual composition KW - Třebíč N2 - 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. ER -
ZACHAŘ, Adam a Milan NOVÁK. Beryllium minerals from NYF intragranitic pegmatitesof the ultrapotassic Třebíč Pluton, Czech Republic. In \textit{5th Central-European Mineralogical Conference}. 2018. ISBN~978-80-223-4548-4.
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