Bashierxi
Xinjiang, East Kunlun, Qiman Tagh, China
Other hydrothermalW-Sn
- Type
- W-Sn quartz veins
W-Sn deposit of the Qiman Tagh belt (Baiganhu orefield), in the Xiaomiao Formation (quartzites, marbles, schists) northwest of the Baiganhu fault, around early Paleozoic monzogranites; ore in quartz veins, greisens and skarns, four stages, the first with wolframite, cassiterite, tourmaline and muscovite. 126 quartz veins; reserve of 1.5 × 10^4 t WO3 and 0.1 × 10^4 t Sn. Zheng et al. (2019): vein tourmaline from -11.0 to -9.6 ‰ and tourmalinite tourmaline from -11.1 to -7.1 ‰, common granitic source, little fractionation.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −9.2 ± 0.8 ‰ | −10.2 / −7.6 ‰ | 12 | detrital tourmaline from the schist country rock (drill holes ZK1202 and ZK10803) Mean and standard deviation recalculated from 12 analyses, -10.2 to -7.6 (BW-4 -10.2; BW-4 -9.9; BW-4 -9.1; BW-4 -7.6; BE-50 -10.1; BE-50 -9.6; BE-50 -8.8; BE-50 -8.8; BE-50 -9.5; BE-50 -8.9; BE-50 -9.1; BE-50 -8.3). BE-50: brown rim -9.5 ‰, blue core -8.9 ‰. | Zheng et al. (2019), Tourmaline geochemistry and boron isotopic variations as a guide to … |
| −9.1 ± 1.1 ‰ | −11.1 / −7.1 ‰ | 19 | tourmaline from the host tourmalinites Mean and standard deviation recalculated from 19 analyses, -11.1 to -7.1 (BE-40 -10.3; BE-40 -10.9; BE-40 -11.1; BE-80 -9.0; BE-80 -10.0; BE-88 -9.6; BE-90 -10.1; BE-109 -8.4; BE-109 -7.9; BE-109 -7.1; BE-109 -8.3; BE-114 -9.5; BE-114 -9.6; BE-114 -9.1; BS-2 -8.7; BS-6 -8.6; BS-6 -8.1; BS-9 -8.3; BS-9 -7.6). Published mean -9.1 ‰; metasomatism by a granite-derived hydrothermal fluid. BE-109: brown rim -8.4 ‰, blue core -7.9 ‰. The BS samples are assigned to Bashierxi from their prefix, the article does not say so. | Zheng et al. (2019), Tourmaline geochemistry and boron isotopic variations as a guide to … |
| −10.3 ± 0.5 ‰ | −11 / −9.6 ‰ | 13 | tourmaline from mineralized quartz veins (with cassiterite, scheelite and wolframite) Mean and standard deviation recalculated from 13 analyses, -11.0 to -9.6 (BW-8 -10.6; BE-56 -10.8; BE-56 -10.5; BE-56 -10.7; BE-84 -11.0; BE-86 -10.1; BE-86 -10.7; BE-86 -10.6; BE-86 -9.6; BE-86 -10.0; BE-86 -10.3; BE-86 -9.7; BE-86 -9.7). Published mean -10.3 ‰. BE-94, described with the veins, does not appear in the table. | Zheng et al. (2019), Tourmaline geochemistry and boron isotopic variations as a guide to … |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Bashierxi, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bashierxi/ (accessed 2026-10-20).
@misc{isofind2026bashierxiisotopesignatures,
title = {Bashierxi, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bashierxi/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20