Vzácný allanpringit - produkt alterace fluorwavellitu z lomu Milina u Zaječova (Česká republika)

Q3 Earth and Planetary Sciences

Bulletin Mineralogie Petrologie Pub Date : 2020-01-01 DOI:10.46861/bmp.28.126

Luboš Vrtiška, Václav Zemek, Radana Malíková

引用次数: 2

Abstract

A very rare phosphate allanpringite was found in the abandoned quarry Milina near Zaječov, Czech Republic in Ordovician sediments of the Barrandian area. Allanpringite forms yellow powder and earthy aggregates. In a more detailed study using SEM microscope, allanpringite forms rod-shaped and tabular crystals. Its origin is associated with alteration of fluorwavellite. Empirical formula of the allanprigite is (Fe2.70Al0.24)Σ2.94(PO4)2.00(OH)2.83·5H2O and refined unit-cell parameters are a 9.774(5), b 7.361(3), c 17.826(8) Å, β 92.2(6)° and V 1281.5(9) Å3. Allanpringite was found in association with jarosite, variscite and partly altered fluorwavellite.

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Milina u Zaječova采石场的荧光绿柱石蚀变产物制成的稀有尿囊石（捷克共和国）

在捷克共和国扎杰洛夫附近的废弃采石场Milina，在巴兰地地区奥陶系沉积物中发现了一种非常罕见的磷酸盐allanpringite。褐斑岩形成黄色粉末和土质聚集体。在更详细的研究中，使用SEM显微镜，allanpruite形成棒状和板状晶体。其成因与萤光石的蚀变有关。allanpriite的经验公式为(Fe2.70Al0.24)Σ2.94(PO4)2.00(OH)2.83·5H2O，精炼后的单位胞参数为a 9.774(5)， b 7.361(3)， c 17.826(8) Å， β 92.2(6)°和V 1281.5(9) Å3。斑铜矿与黄钾铁矾、张纹石和部分蚀变的萤光石伴生。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

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