SEJKORA, Jiří, Petr PAULIŠ, Zdeněk DOLNÍČEK, Jakub PLÁŠIL and Radek ŠKODA. Zeolity z lomu Bernartice u Zruče nad Sázavou (Česká republika) (Zeolites from the Bernartice quarry near Zruč nad Sázavou (Czech Republic)). Acta Musei Moraviae, Scientiae Geologicae. Moravian Museum, 2023, vol. 108, No 2, p. 171-193. ISSN 1211-8796.
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Basic information
Original name Zeolity z lomu Bernartice u Zruče nad Sázavou (Česká republika)
Name in Czech Zeolity z lomu Bernartice u Zruče nad Sázavou (Česká republika)
Name (in English) Zeolites from the Bernartice quarry near Zruč nad Sázavou (Czech Republic)
Authors SEJKORA, Jiří, Petr PAULIŠ, Zdeněk DOLNÍČEK, Jakub PLÁŠIL and Radek ŠKODA (203 Czech Republic, belonging to the institution).
Edition Acta Musei Moraviae, Scientiae Geologicae, Moravian Museum, 2023, 1211-8796.
Other information
Original language Czech
Type of outcome Article in a journal
Field of Study 10504 Mineralogy
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW URL
RIV identification code RIV/00216224:14310/23:00133559
Organization unit Faculty of Science
Keywords in English Bernartice; chabazite-Ca; chabazite-K; chabazite-Mg; chemical composition; Czech Republic; harmotome; powder X-ray diffraction data; thomsonite-Ca; unit-cell parameters; zeolite
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Changed by Changed by: Mgr. Marie Šípková, DiS., učo 437722. Changed: 16/2/2024 15:00.
Abstract
Neobvyklá zeolitová mineralizace byla objevena v prasklinách a dutinách oligoklasitového pegmatitu v hadcových skalách v aktivním Bernartickém lomu, 7 km jižně od Zruče nad Sázavou ve středních Čechách. Studovali jsme tyto struktury a jejich vlastnosti.
Abstract (in English)
An unusual zeolite mineralization was found in fissures and cavities of oligoclasite pegmatite hosted in serpentinite rocks in the active Bernartice quarry, 7 km S from Zruč nad Sázavou, central Bohemia, Czech Republic. The earliest thomsonite-Ca forms light grey acicular crystals, up to 10 mm in size, usually replaced by Mg-Al-Si-(Ca) saponite-like mineral. It is orthorhombic, space group Pncn, with unit-cell parameters refined from PXRD: a 13.108(4), b 13.068(3), c 13.244(4) Å and V 2268.6(9) Å3. Barium- and Mg-rich chabazite-Ca forms abundant white rhombohedral, cube-like crystals with vitreous lustre, up to 4 mm in size. It is trigonal, space group R-3m, with unit-cell parameters refined from PXRD: a 13.8055(12), c 14.967(2) Å and V 2470.4(5) Å3. The rare chabazite-Mg and chabazite-K form sometimes the youngest 30–40 μm thick margin of chabazite crystals. The youngest harmotome was observed as white prismatic crystals with vitreous lustre up to 0.5 mm in size. It is monoclinic, space group P21/m, with unit-cell parameters refined from PXRD: a 9.8581(16), b 14.1494(12), c 8.6854(11) Å, β 124.622(8)° and V 997.0(3) Å3. The quantitative chemical composition (by electron microprobe) for all studied zeolites are given.
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