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.
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