ČeskýBrod附近Tismic的Cu（-Ag）矿化作用（捷克共和国Blanice沟perm）

Q3 Earth and Planetary Sciences

Bulletin Mineralogie Petrologie Pub Date : 2021-01-01 DOI:10.46861/bmp.29.197

Z. Dolníček, Nad'a Profantova, Jana Ulmanová

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引用次数: 1

摘要

对在Český Brod(波西米亚中部)附近以前开采的Tismice垃圾场新收集的样品进行的矿物学研究显示，存在钴/菱白石、刺长石、孔雀石和蓝铜矿。此外，来自寄主二叠系砂岩/粗砂岩的沙质-浅灰质碎屑物质是所研究矿石样品的常见化合物。碳酸铜在矿石矿物中明显占上风，而硫化物相则是附属物。富银银蓝绿石被孔雀石和蓝铜矿强烈取代，其颗粒结构较粗，不能排除其原生热液或晚期热液成因。其他记录的矿石矿物明显为表生成因。虽然Tismice的矿化性质与Český Brod镇附近二叠纪沉积物中的其他表生脉型铜矿化相似，但银的富集却是首次报道。

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Cu(-Ag) mineralizace z Tismic u Českého Brodu (perm blanické brázdy, Česká republika)

A mineralogical study of samples newly collected from dump material at the formerly mined locality Tismice near Český Brod (central Bohemia) revealed the presence of covellite/yarrowite, acanthite, malachite and azurite. In addition, psammitic to aleuritic detrital material originated from host Permian sandstones/arkoses is a common compound of the studied ore samples. The Cu carbonates clearly prevail among ore minerals, whereas sulphide phases are accessories. The silver-enriched covellite/yarrowite, strongly replaced by malachite and azurite, has a coarse-grained texture implying that its primary hydrothermal or late hydrothermal origin cannot be excluded. The other recorded ore minerals are clearly supergene in origin. Although the nature of the mineralization from Tismice is in general similar to other occurrences of epigenetic vein Cu mineralization hosted by the Permian sediments in the vicinity of the town of Český Brod, the enrichment in silver is reported for the first time here.

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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