NEW AXINITE OCCURRENCE FROM BÜKK MTS., NE HUNGARY
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Keywords:axinite-(Fe), Bükk Mts., boron, potassic metasomatism, metavolcanics
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 previous one, but the two axinite-bearing parageneses are completely different from each other. The newly discovered axinite is the rock forming component in Triassic metabasalts of the Szentistvánhegy Metavolcanics Formation. The rock body suffered a potassic metasomatism, which overprinted the axinite formation. The source of the boron and the relationship with other borosilicates from the Bükk Mts. is not yet clear.