Abstract

The new data for the segregations, paragenetic assemblage, and composition of bismuthian jamesonite from gold–quartz mineralization at the Sredny Golgotai deposit located in the eastern part of the Mongolia–Okhotsk orogenic belt are reported. This mineral occurs as two varieties (I, II), which are slightly different in composition and chemically close to bismuthian jamesonite (“sakharovaite”) described from the Ustarasai deposit. In contrast to variety II, variety I is Cu- and Fe-free. The electron microprobe study has revealed that varieties I and II are close to jamesonite and tintinaite, respectively. The data obtained make it possible to conclude that individual sulfosalt species of the proper tintinaite and jamesonite series, which are close in composition, are probable members of the tintinaite–kobellite series. It is assumed that the Cu- and Fe-free variety of bismuthian jamesonite close in composition to “sakharovaite” is an individual mineral species.

中文翻译：

---

俄罗斯东贝贝加尔地区Sredny Golgotai金矿的矿石中的铋铋锌矿（“ Sakharovaite”）

摘要

据报道，位于蒙古-鄂霍次克造山带东部的Sredny Golgotai矿床金-石英成矿作用中铋铋锰矿的分离，共生组合和成分的新数据。该矿物有两个变种（I，II），它们的成分略有不同，并且化学性质与Ustarasai矿床中描述的铋镁矾（Sakharovaite）接近。与品种II相比，品种I无铜和铁。电子探针研究表明，品种I和II分别接近詹姆逊石和锡蒂纳石。所获得的数据有可能得出结论，即组成合适的tintinaite和jamesonite系列的各个亚硫酸盐种类可能是tintinaite -kobellite系列的成员。