Böhmit a doprovodná zeolitová mineralizace ze Soutěsek u Děčína (Česká republika)

نویسندگان

چکیده

A new locality of böhmite and zeolite minerals, called „Soutěsky above the quarry“, occurs near quarry „Soutěsky“ on SW slope Hlídka hill, eastward Soutěsky village, about 5 km od town Děčín (Czech Republic). The mineralization is bound to vugs Cenozoic volcanics. Böhmite forms mostly whitish brownish hemispherical spherical clusters up mm in size. unit-cell parameters böhmite, refined from X-ray powder data, are a 2.871 (3), b 12.216(9), c 3.699(4) Å V 129.7(2) Å3. Chemical analyses correspond empirical formula (Al0.92 Si0.06)Σ0.98O(OH). following zeolites have been found association with böhmite: thomsonite-Ca, phillipsite-K, gismondine, chabazite-Ca analcime, as well calcite. Minerals crystallized succession: calcite I → phillipsite-K II thomsonite-Ca gismondine III. Independently, (older) analcime (younger) occur. These minerals probably low tempered solutions, enriched Al ions alkalies, source which can be altered rock-forming alumosilicates (analcime, nepheline).

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ژورنال

عنوان ژورنال: Bulletin Mineralogie Petrologie

سال: 2021

ISSN: ['2570-7337', '2570-7345']

DOI: https://doi.org/10.46861/bmp.29.164