(Vlčí hora u Černošína)
Vlčí hora (Wolf Hill) constituted from two similar volcanic effusions of Tertiary olivinic nephelinites with irregular bodies of pyroclastic rocks. Volcanic body 1,5 × 2,5 km intersect chloritic-sericitic phyllites of west Bohemian Proterozoic series. Altered pyroclastic rocks contain well shaped phenocrysts of pyroxene (salite) and amphibole (oxykaersutite) up to 5 cm (max. 10 cm) large. Accessory olivine crystals up to 4 cm large have 84 % of forsterite component.
Refs.:
- Pechar, F., Fuess, H., and Joswig, W. (1989) Refinement of the crystal structure of kaersutite (Vlčí Hora, Bohemia) from neutron diffraction. Neues Jahrbuch für Mineralogie, Monatshefte (1989): 137-143.
- Navrátil, Z., Šrein, V. (1997): Krystalovaný olivín v tufech Vlčí hory u Černošína. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 1997, roč. 4-5, s. 177-178.
