Faujasit-Na a doprovodná zeolitová mineralizace z lokality Klučky u Polevska v Lužických horách (Česká republika)

Q3 Earth and Planetary Sciences Bulletin Mineralogie Petrologie Pub Date : 2020-01-01 DOI:10.46861/bmp.28.417

P. Pauliš, Libor Hrůzek, Oldřich Janeček, J. Sejkora, Z. Dolníček, Luboš Vrtiška, Radana Malíková, Ondřej Pour, F. Fediuk

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Abstract

Four new zeolite occurrences have been discovered in a forested, 3 km long ridge Klučky, composed of basaltic rocks and culminating in the 642 m high elevation of the same name NW of the Nový Bor town in the Lužické hory Mts. At the Wachstein locality, the first occurrence of the rare zeolite faujasite-Na in the Czech Republic was verified. It forms octahedral crystals up to 0.3 mm in size with common twins according to spinel law. The unit-cell parameter of faujasite-Na refined from the powder X-ray data is a 24.6775(9) Å and V 15028.1(9) Å3. Its chemical analyses correspond to the empirical formula (Na1.43Ca1.20K0.44Mg0.16)Σ3.23(Al3.33Si8.36)O24·15 H2O. Besides to phillipsite and chabazite, frequent offretite, characterised by its extraordinary morphological variety, is present in all described localities. The unit-cell parameters of offretite refined from the powder X-ray data are: a 13.311(6), c 7.5934(6) Å and V 1165.2(5) Å3 (Wachstein) and a 13.310(5), c 7.5886(5) Å and V 1164.3(4) Å3 (Klučky - Stráň). Chemical analyses of offretite correspond to the empirical formula K2.02Ca1.31Mg0.32Sr0.09(Al5.42Si12.56)O36·16 H2O (Wachstein) and Ca1.48K1.02Mg0.59Na0.10Sr0.09(Al5.56Si12.52)O36·16 H2O (Klučky - Stráň).

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Lusatian山脉Klučky u Polevska遗址的Faujasit Na和伴随的沸石矿化作用（捷克共和国）

在一个由玄武岩组成的3公里长、森林覆盖的klu ky山脊上发现了4个新的沸石矿床，该山脊位于Lužické horymts中Nový Bor镇西北方向642米高的同名山脊上。在Wachstein地区，首次证实了稀有沸石faujasite-Na在捷克共和国的出现。根据尖晶石规律，与普通孪晶形成大小可达0.3 mm的八面体晶体。从粉末x射线数据中提炼出faujasite-Na的单位胞参数为24.6775(9)Å和v15028.1 (9) Å3。其化学分析符合实验式(Na1.43Ca1.20K0.44Mg0.16)Σ3.23(Al3.33Si8.36)O24·15 H2O。除了菲利普石和chahabazite，频繁的offrite，其特点是其非凡的形态变化，是存在于所有描述的地方。从粉末x射线数据中提炼的offretite的单位胞参数为:a 13.311(6)， c 7.5934(6) Å和V 1165.2(5) Å3 (Wachstein)和a 13.310(5)， c 7.5886(5) Å和V 1164.3(4) Å3 (klu - Stráň)。offretite的化学分析对应于实验式K2.02Ca1.31Mg0.32Sr0.09(Al5.42Si12.56)O36·16 H2O (Wachstein)和Ca1.48K1.02Mg0.59Na0.10Sr0.09(Al5.56Si12.52)O36·16 H2O (klu - Stráň)。

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Bulletin Mineralogie Petrologie Earth and Planetary Sciences-Economic Geology

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期刊介绍： Bulletin Mineralogie Petrologie is a peer-reviewed journal focused especially on: mineralogy, crystal chemistry and study of crystal structures of minerals study of mineral associations and processes of their origin meteoritics, research of tectites economic geology (of ore deposits) and study of history of mining of ore deposits topographic mineralogy petrology of igneous, metamorphic and sedimentary rocks instrumental analytical methods at mineralogy and petrology mineralogy and petrology as tools for archeology and similar disciplines