Kekekaerde
Xinjiang, East Kunlun, Qiman Tagh, China
Other hydrothermalW-Sn
- Type
- W-Sn veins around a monzogranite-pegmatite complex
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. Twenty-three vein orebodies around or within the complex; 14 × 10^4 t WO3 and 7 × 10^4 t Sn. Zheng et al. (2019): monzogranite tourmaline from -10.7 to -9.2 ‰, boron of continental sedimentary origin.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −9.8 ± 0.4 ‰ | −10.1 / −9.1 ‰ | 4 | detrital tourmaline from the sericite-quartz schist country rock (KA-43) Mean and standard deviation recalculated from 4 analyses, -10.1 to -9.1 (KA-43 -10.1; KA-43 -9.1; KA-43 -9.9; KA-43 -9.9). Cores more magnesian than rims; published mean of the schists of both deposits -9.3 ‰ (n = 16). | Zheng et al. (2019), Tourmaline geochemistry and boron isotopic variations as a guide to … |
| −9.9 ± 0.4 ‰ | −10.7 / −9.2 ‰ | 16 | monzogranite tourmaline Mean and standard deviation recalculated from 16 analyses, -10.7 to -9.2 (KA-95 -10.0; KA-95 -9.7; KA-95 -9.2; KA-95 -9.8; KA-95 -10.1; KA-102 -10.7; KA-102 -10.1; KA-102 -9.9; KA-102 -10.3; KA-102 -10.1; KA-102 -9.6; KA-102 -9.6; KA-102 -9.4; KA-102 -9.8; KA-103 -9.7; KA-103 -9.7). Published mean -9.8 ‰; overlap with the country rock: anatexis without significant fractionation according to the authors. | 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). Kekekaerde, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/kekekaerde/ (accessed 2026-10-20).
@misc{isofind2026kekekaerdeisotopesignatures,
title = {Kekekaerde, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/kekekaerde/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20