Korundový pegmatit z Pokojovic u Třebíče, Česká republika

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Acta Mus. Moraviae, Sci. Nat. 78 (1993), vydání 1–2, stránky 3-12
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Corundum-bearing pegmatite from Pokojovice near Třebíč, Czech Republic

The Pokojovice corundum-bearing pegmatite is found in the varied group of Moravian Moldanubicum. It forms a discordant dike, up to 2 m thick, penetrating amphibolite with thin layers of calcite marble, and skarn-like rocks. The pegmatite is composed of three different units:

  1. Pyroxene pegmatite (K-feldspar + Fe-diopside + plagioclase + titanite ± quartz ± amphibole ± biotite).
  2. Biotite pegmatite (K-fefdspar + biotite + plagioclase).
  3. Corundum pegmatite (K-feldspar + corundum + plagioclase + biotite ± muscovite ± tourmaline).

The geological position, as well as the mineral and chemical composition of pegmatite and the surrounding rocks are described. The paper also discusses conditions of the corundum formation.

 

Kontakt:

Milan Trnka, Lithos Ltd, Strnadova 9, 62800 Brno, Czech Republic
Stanislav Houzar, Západomoravské muzeum, Zámek I, 67401 Třebíč, Czech Republic

Citace
Trnka, M., Houzar, S., 1993: Corundum-bearing pegmatite from Pokojovice near Třebíč, Czech Republic. - Acta Mus. Moraviae., Sci. Nat., 78, 1-2, 3-12 (with Czech summary)
ISSN: 1211–8796