Tourmaline evolution in the Nedvědice orthogneiss, Svratka Unit, Bohemian Massif
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| Year of publication | 2018 |
| Type | Conference abstract |
| MU Faculty or unit | |
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| Description | The Nedvědice orthogneiss is characterized by high contents of F, and B2O3, manifested by the presence of F-rich muscovite, F-rich tourmaline, and rare fluorite-tourmaline layers. Tourmaline forms subhedral grains in the orthogneiss, prismatic crystals in muscovite and fluorite-tourmaline layers in the orthogneiss. Tourmaline is also present as fine-grained layers in the muscovite layers. In our study, two types of tourmaline zoning were distinguished in the four types of studied rocks. Our results show a significant change of tourmaline composition during metamorphic recrystallization. |
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