Cordierit – sekaninait z kontaktní aureoly žulovského plutonu

Acta Mus. Moraviae, Sci. Geol. 89 (2004), vydání 1–2, stránky 67-79

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Cordierite – sekaninaite from the contact aureole of the Žulová granite pluton, eastern Variscan front, Czech Republic

Migmatites related to the periplutonie HT/LP-MP metamorphism ofthe Žulová pluton (eastern Variscan front) carry the assemblage: quartz + plagioclase + K-feldspar + biotite + garnet + sillimanite + cordierite+ ilmenite. Cordierite displays wide compositional variability ranging between 6.83-13.68 wt. % FeO_tot, 4.72-9.28 wt. % MgO, and 0.0-0.77 wt. % MnO corresponding to 30-62 mol. % of sekaninaite (Fe-cordierite) and 38-70 mol. % of cordierite (Mg-cordierite). This paper brings new data showing relative abundance of Fe-cordierite along with chemical compositions of associated minerals.

Kontakt:

Vladimír Žáček, Czech Geological Survey, P.O. BOX 85, Klárov 3, 118 21 Praha 1, e-mail: zacek@cgu.cz

Citace

Žáček, V., 2004: Cordierit - sekaninait z kontaktní aureoly žulovského plutonu. - Acta Mus. Moraviae, Sci. geol., 89, 1-2, 67-79 (with English summary)

Klíčová slova:

biotite, Bohemian Massif, cordierite, garnet, ilmenite, periplutonic metamorphism, sekaninaite, Silesieum, Variseides, Žulová Pluton

ISSN: 1211–8796