Zherek
Eastern Kazakhstan, Irtysh district (southern Mukur fault zone), Kazakhstan
Orogenic goldAu (Sb)
- Type
- Disseminated gold-sulfide in black shales, with late antimony
West Kalba gold belt (Ob-Zaisan Hercynides), in Carboniferous carbonaceous terrigenous-carbonate rocks; invisible gold in disseminated pyrite and arsenopyrite, close to the Carlin type according to the authors, late antimony (stibnite in quartz-stibnite veins and breccias) emplaced during extension. Auriferous pyrite-arsenopyrite disseminated in Lower Carboniferous carbonaceous silty sandstones and small stocks of beresitised plagiogranite; stibnite pockets in quartz veins several metres thick and massive stibnite veins in the plagiogranites. Sericite Ar-Ar ages: 286.7 ± 3.4 (beresitised plagiogranite), 287.9 ± 2.8 and 282.5 ± 2.7 Ma (disseminated ore). Coordinates not published.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.2 ‰ | 1 | stibnite (quartz-stibnite vein with Sb oxides in beresitised plagiogranite) Single analysis (Zhe-70). Sulfur close to the meteoritic zero, from a deep source common to all deposits according to the authors. | Kovalev et al. (2014), Relationship of antimony with gold mineralization in the ore distr… |
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Cite this page
IsoFind Atlas (2026). Zherek, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/zherek/ (accessed 2026-10-19).
@misc{isofind2026zherekisotopesignatures,
title = {Zherek, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/zherek/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19