Xiaoerkule
Western East Kunlun Orogenic Belt, Altyn Tagh fault system, China
Other hydrothermalSb
- Type
- Vein and disseminated antimony in silicified rocks (orogenic)
Largest identified antimony deposit in the western East Kunlun: 79,200 t Sb at 8.26 %, in turbidites of the Huangyangling Formation (Middle Permian) and the Wolonggang Formation (Upper Triassic). Stibnite with minor pyrite, chalcopyrite, realgar and orpiment, in silicified rocks. Gong et al. (2026): fluid inclusions at 139 to 255 °C and 2.7 to 8.7 wt% NaCl eq.; water with δD of -121.5 to -111.6 ‰ and δ18O of -2.3 to +2.7 ‰ (magmatic or metamorphic water strongly mixed with meteoric water); stage I pyrite at -1.28 to +0.63 ‰, stage II stibnite at +1.63 to +2.79 ‰ (apparent H2S of +5.1 to +6.3 ‰). Coordinates not published.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 2.17 ± 0.36 ‰ | 1.63 / 2.79 ‰ | 25 | stage II stibnite Mean and standard deviation recalculated from 25 analyses, +1.63 to +2.79 (X-62-1-1 +1.63; X-62-1-2 +1.71; X-62-2-1 +1.65; X-62-2-2 +1.68; X-62-3-1 +1.89; X-62-3-2 +1.87; X-21-1 +1.95; X-21-2 +1.85; X-21-3 +2.79; X-21-4 +2.00; X-21-5 +1.95; X-21-6 +2.41; X-14-1-1 +2.51; X-14-1-2 +2.72; X-14-1-3 +2.79; X-14-1-4 +2.48; X-14-1-5 +2.30; X-14-1-6 +2.31; X-14-1-7 +2.67; X-61-1 +2.24; X-61-2 +2.20; X-61-3 +2.12; X-61-4 +2.20; X-61-5 +2.17; X-61-6 +2.18); apparent H2S calculated by the authors from +5.12 to +6.28 ‰. | Gong et al. (2026), Genesis of the Xiaoerkule antimony deposit in the East Kunlun Orogeni… |
| −0.02 ± 0.75 ‰ | −1.28 / 0.63 ‰ | 6 | stage I quartz-sulfide pyrite Mean and standard deviation recalculated from 6 analyses, -1.28 to +0.63 (X-18-1-1 -1.28; X-18-1-2 -0.53; X-18-1-3 +0.63; X-18-2-1 +0.42; X-18-2-2 +0.08; X-18-2-3 +0.55); sulfur near 0 ‰, magmatic or deep. | Gong et al. (2026), Genesis of the Xiaoerkule antimony deposit in the East Kunlun Orogeni… |
δD in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −117.8 ± 4.4 ‰ | −121.5 / −111.6 ‰ | 4 | fluid inclusion water of quartz associated with stibnite Mean and standard deviation recalculated from 4 analyses, -121.5 to -111.6 (X-16 -111.6; X-44 -117.6; X-50 -120.4; X-63 -121.5); strongly depleted: large meteoric water share. | Gong et al. (2026), Genesis of the Xiaoerkule antimony deposit in the East Kunlun Orogeni… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 12.1 ± 2.3 ‰ | 10 / 15 ‰ | 4 | quartz associated with stibnite Mean and standard deviation recalculated from 4 analyses, +10.0 to +15.0 (X-16 +10.5; X-44 +15.0; X-50 +10.0; X-63 +12.8); water δ18O calculated by the authors: -1.8, +2.7, -2.3 and +0.5 ‰. | Gong et al. (2026), Genesis of the Xiaoerkule antimony deposit in the East Kunlun Orogeni… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Xiaoerkule, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/xiaoerkule/ (accessed 2026-10-16).
@misc{isofind2026xiaoerkuleisotopesignatures,
title = {Xiaoerkule, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/xiaoerkule/},
note = {Accessed 2026-10-16}
}Updated : 2026-10-16