New occurrence of hyperpotassic granulites in the Blanský les Granulite Massif (Southern Bohemia)

Geoscience Research Reports 46, 2013 (GRR for 2012), pages 30–34

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Abstract

Exceptionally large (length ~ 200 m, width up to ~45 m) body of Grt-bearing hyperpotassic granulite was discovered in forest on ridge of Mt. Klet'(1083 m a.s.l.), 1.3 km NW of Kokotin solitary house (Blanský les Granulite Massif, southern Bohemia). The mineral and whole-rock geochemical data strongly resemble the already known occurrences of Grt- (Plešovice) and Di-bearing (Lhotka) hyperpotassic granulites from the same massif. The current study indicates that these exotic and genetically interesting rocks could have been largely overlooked during the 1:25 000 mapping campaign and thus may be more widespread than thought previously.