Abstract

The Siratur gold deposit occurs in the northern part of the South Uralian segment of the Main Uralian Fault. The ore zone of the deposit is confined to an area of a tectonic junction of serpentinites of the Nurali massif and a longitudinal band of carbonaceous schists of the Ordovician Polyakovka Formation, which also hosts abundant basalts with petrogeochemical features of mid-oceanic ridge mafic volcanic rocks. The gold mineralization of the Siratur deposit mostly includes stringer-disseminated gold-sulfide type (1) in black shales and stringer-disseminated gold-quartz-low sulfide type (2) in listvenite–beresite complex. The microprobe analysis of gold grains showed that the fineness of type 1 and 2 gold is 670–820 and 940–970, respectively. The deposit can be ascribed to the polygenic and polychronous type.

中文翻译：

---

南乌拉尔Ophiolite协会碳质岩中的Siratur金矿床

摘要

Siratur金矿床发生在主要乌拉尔断层的南乌拉尔断层的北部。该矿床的矿带仅限于Nurali地块蛇纹岩的构造交界区域和奥陶纪Polyakovka组的碳质片岩纵带，该区还拥有丰富的玄武岩，具有中洋海陆基镁铁质火山岩的岩石化学特征。 。Siratur矿床的金矿化主要包括黑色页岩中的纵晶弥散型硫化金（1）和李斯特-贝氏体复合体中的纵晶弥散型金-石英-低硫化物（2）。对金粒的微探针分析表明，类型1和2的金的细度分别为670-820和940-970。沉积物可归因于多基因和多时相类型。