Gauteit

Gauteit is a light gray gangue that corresponds to its composition after a trachyandesite . Sprinkles of potassium feldspar are embedded in a fine-grained matrix of plagioclase ( andesine to labradorite ), sodalite and dark minerals such as biotite , amphibole or clinopyroxene . Typical accessory components are zircon , apatite and magnetite . The name derives from the Czech hamlet Gaute (today Kouty, near Těchlovice nad Labem ), where this rock was first found and described in 1899 by Josef Emanuel Hibsch . Numerous Gauteit passages can be found in the vicinity of the Cenozoic volcanic center of Rostoky ( Povrly municipality , Czech Republic).

Individual evidence

1. ↑ George Otis Smith and Frank C. Calkins: A Geological Reconnaissance Across the Cascade Range Near the Forty-ninth Parallel. USGS Bulletin 235, Washington DC, 1904, p. 135
2. ^ Emil Jelínek, J. Souček, Jaromir Tvrdy, Jaromír Ulrych: Geochemistry and petrology of alkaline dyke rocks of the Roztoky volcanic center, České středohoří Mountains, ČSSR. Chemie der Erde 49 (1989), 201-217.

Web links

• Gauteit on the website mineralienatlas.de
• Trachyandesite, trachy basalt and their gangestones
• Locations of Gauteit in the Czech Republic