Spišsko-gemerskérudohorie Mts.（斯洛伐克东部）热液菱铁矿型矿脉中硫酸盐的新数据：1。斯洛文尼亚Došt'avnávein的Nuffinielite和aikinite

Q3 Earth and Planetary Sciences

Bulletin Mineralogie Petrologie Pub Date : 2021-01-01 DOI:10.46861/bmp.29.108

M. Števko, J. Sejkora, Ľudovít Dojčanský

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引用次数: 3

摘要

在斯洛伐克Košice地区Spišsko-gemerské rudohorie Mts. Spišská nov Ves Co. Došťavná附近Slovinky, Spišsko-gemerské rudohorie Mts.的菱铁矿型含硫化物热液脉中，最近发现了一个新的烟铁矿产状。它与黄铜矿、黄铁矿、电气石和绿泥石一起包裹在石英菱铁矿基质中，形成大小可达1厘米的铅灰色针状晶体或2.5厘米的聚集体。纳菲尔德铁矿常被少量的绢金矿、方铅矿和天然铋所取代。nuffelite(对于正交空间群Pbnm)的精细化单位胞参数为:a 14.5313(16) Å， b 21.454(2) Å， c 4.0500(6) Å和V 1262.58(19) Å3。根据Pb+Bi+Sb = 5 apfu，从Slovinky-Došťavná得到nuffielite的平均(n=145)经验公式为Cu1.30Pb2.00Bi2.00(Pb0.30Bi0.30 Sb0.40)1.00(S7.12Se0.03)7.15。Aikinite形成微观的，正面体到亚正面体的颗粒或聚集体取代nuffielite。以(Cu+Pb)/2+(Sb+Bi) = 8 apfu为基准，研究的aikinite的平均(n=29)经验公式为Pb3.83Cu3.76(Bi4.12 Sb0.09)4.21(S12.40Se0.03)12.03。

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New data on sulphosalts from hydrothermal siderite-type veins in the Spišsko-gemerské rudohorie Mts. (eastern Slovakia): 1. Nuffieldite and aikinite from Slovinky-Došťavná vein

A new occurrence of nuffieldite was recently discovered in a siderite-type hydrothermal vein with sulphides in Došťavná near Slovinky, Spišsko-gemerské rudohorie Mts., Spišská Nová Ves Co., Košice Region, Slovakia. It forms lead-gray acicular crystals reaching up to 1 cm in size or aggregates up to 2.5 cm, which are enclosed in quartz-siderite matrix together with chalcopyrite, pyrite, tourmaline and chlorite. Nuffieldite is frequently replaced by minor aikinite, galena and native bismuth. The refined unit-cell parameters of nuffieldite (for the orthorhombic space group Pbnm) are: a 14.5313(16) Å, b 21.454(2) Å, c 4.0500(6) Å and V 1262.58(19) Å3. The average (n=145 analyses) empirical formula of nuffieldite from Slovinky-Došťavná based on Pb+Bi+Sb = 5 apfu is corresponding to Cu1.30Pb2.00Bi2.00(Pb0.30Bi0.30 Sb0.40)1.00(S7.12Se0.03)7.15. Aikinite forms microscopic, anhedral to subhedral grains or aggregates replacing nuffieldite. The average (n=29) empirical formula of studied aikinite based on (Cu+Pb)/2+(Sb+Bi) = 8 apfu is Pb3.83Cu3.76(Bi4.12 Sb0.09)4.21(S12.40Se0.03)12.03.

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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