New axinite occurrence from Bükk Mts., NE Hungary

Balassa, Csilla and Németh, Norbert and Kristály, Ferenc (2023) New axinite occurrence from Bükk Mts., NE Hungary. GEOSCIENCES AND ENGINEERING: A PUBLICATION OF THE UNIVERSITY OF MISKOLC, 11 (1). pp. 85-99. ISSN 2063-6997

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Abstract

The ‘Y-adit’ (Lillafüred, Bükk Mts.) was known for years as the only axinite (Ca- Al-borosilicate mineral group) occurrence from Hungary. Here the axinite is the component of hydrothermal quartz – albite – chlorite – calcite veins, in Triassic metabasalts. We report a new, recently discovered axinite occurrence from the Bükk Mts., at Létrás-tető Hill. This new occurrence is in the vicinity of the Y-adit, but the two axinite-bearing parageneses are completely different from each other. The newly discovered axinite is the rock-forming com- ponent in Triassic metabasalts of the Szentistvánhegy Metavolcanics Formation. The rock body suffered potassic metasomatism, which overprinted the axinite formation. The source of the boron and the relationship with other borosilicates from the Bükk Mts. has not been clarified yet.

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