Scandium and REE-rich tourmaline from the Kracovice pegmatite (Bohemian Massif) and its breakdown to allanite

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Authors	ČOPJAKOVÁ Renata ŠKODA Radek VAŠINOVÁ GALIOVÁ Michaela
Year of publication	2013
Type	Conference abstract
MU Faculty or unit	Faculty of Science
Citation
Description	Primary black columnar Al-rich schorl to rare fluor-schorl, locally overgrown by brownish green fluor-elbaite from the Kracovice pegmatite (mixed NYF + LCT signature; Moldanubian Zone, Czech Republic) was partly replaced by a mixture of secondary fluor-elbaite plus the assemblage allanite-(Ce) and chamosite. Substitution of ScAl-1 in the octahedral site as well as minor vacancy in the M-sites are supposed in allanite.
Related projects:	Chemical composition and structural order of natural tourmalines - geochemical versus crystal-structural constraints CEITEC - Central European Institute of Technology