Granitické NYF pegmatity v okolí Velkého Meziříčí, Třebíčský pluton, Morava

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Acta Mus. Moraviae, Sci. Geol. 98 (2013), vydání 2, stránky 83–100
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Granitic NYF pegmatites in the Velké Meziříčí region, Třebíč Pluton, western Moravia (Czech Republic)

Detailed field work on NYF granitic pegmatites (Kfs + Plg + Qz + Ab + Bt) enclosed in syenite (to melagranite) of the Třebíč Pluton within the area of Velké Meziříčí revealed existence of several distinct subregions of granitic pegmatites – Velké Meziříčí, Vlčatín, and Uhřínov. The pegmatites from the individual sub-regions differ in their geological position, shape and size of pegmatite bodies, their internal structure (zoning, abundance of pockets), and mineral assemblages. Titanite is along with allanite-(Ce) the most typical accessory mineral present in several textural and paragenetic types within a single pegmatite body in whole region. The pegmatites in the Velké Meziříčí region differs from the NYF pegmatites enclosed in the Třebíč Pluton from the Třebíč-Vladislav region in (i) simple internal structure and size of pegmatite bodies, (ii) abundance of pockets and (iii) rather primitive mineralogy with only rare Y,REE,Nb,Ta,Ti-oxide minerals and tourmaline, and total absence of Be-bearing (e.g., beryl, phenacite, bavenite) and Sn-bearing (e.g., cassiterite, herzenbergite) minerals locally common in the Třebíč-Vladislav region.

Kontakt:

Adam Zachař, Milan Novák, Institute of Geological Sciences, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic, e-mail: Adamzachar@seznam.cz

Citace
Zachař, A., Novák, M., 2013: Granitické NYF pegmatity v okolí Velkého Meziříčí, Třebíčský pluton, Morava. – Acta Mus. Morav., Sci. Geol., 98, 2, 83–100 (with English summary)
ISSN: 1211–8796