Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Granodiorites of the redwitzite suite from the drill hole HU-15 in the Horní Slavkov area
AbstractBiotite granodiorites belonging to the redwitzite suite of the Western Bohemian massif occur as small bodies in metasediments of the Slavkov crystalline unit. Granodiorites contain plagioclase (An27-37), K-feldspar, biotite (Fe-phlogopite to Mg-siderophyllite), quartz and accessories (apatite, zircon). Chlorite, titanite, ilmenite and REE-carbonates are part of secondary assemblage originated by breakdown of biotite. Granodiorites show I-type signature, in comparison with related rocks from the Hrušková and Bečov area enrichment in Sr and depletion in Ni, Cr and V.