Tulaergen
Xinjiang, Eastern Tianshan (southern margin of the Central Asian Orogenic Belt), China
Magmatic (Ni-Cu-PGE, carbonatites)Ni-Cu
- Type
- Magmatic Ni-Cu sulphides (conduit-type intrusion, orogenic setting)
Conduit-type deposit of about 20 Mt of sulphide ore, massive and net-textured ores. Sulphides systematically lighter in nickel than the bulk silicate Earth: sulphide liquid derived from an oxidised parent magma that dissolved much light sulphide in its source, possibly deep cumulates complementary to the sheet-like mineralisation at Hulu according to Ma et al. (2025). Chalcopyrite gets lighter as its Fe/(Fe + Cu) decreases: prolonged fractionation of the Cu-rich liquid. Coordinates not given.
δ60Ni in ‰ (per mil) Values of the same system
Standard : NIST SRM 986
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.86 ± 0.27 ‰ | −1.22 / −0.44 ‰ | 9 | chalcopyrite of massive ores (18TL-2 and 18TL-4) Mean and standard deviation recalculated from 9 analyses, eight grains from 18TL-2 (authors' mean -0.91 ‰) and one from 18TL-4; the lightest chalcopyrite of the three deposits. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
| −0.33 ± 0.02 ‰ | −0.36 / −0.3 ‰ | 7 | pentlandite of massive ores (18TL-2 and 18TL-4) Mean and standard deviation recalculated from 7 analyses, dissolution repeats counted as analyses, as in the authors' means. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
| −0.47 ± 0.07 ‰ | −0.55 / −0.38 ‰ | 9 | pyrrhotite of massive ores (18TL-2 and 18TL-4) Mean and standard deviation recalculated from 9 analyses, dissolution repeats counted as analyses, as in the authors' means. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
| −0.35 ± 0.15 ‰ | −0.66 / −0.15 ‰ | 8 | mixed sulphides of the net-textured ore (TL-1) Mean and standard deviation recalculated from 8 analyses, powders mixing several sulphides and some silicate (Mg/Fe up to 2.6), representative of the unfractionated sulphide liquid according to the authors; dissolution repeats counted as analyses, as in the authors' means. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
Deposits of the same type
- Bayan Obo China
- Norilsk-Talnakh Russia
- Bushveld, Merensky Reef South Africa
- Bushveld, UG2 chromitite South Africa
- Bushveld, Platreef South Africa
- Sudbury Canada
- Voisey's Bay Canada
- Rössing Namibia
Cite this page
IsoFind Atlas (2026). Tulaergen, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/tulaergen/ (accessed 2026-10-14).
@misc{isofind2026tulaergenisotopesignatures,
title = {Tulaergen, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/tulaergen/},
note = {Accessed 2026-10-14}
}Updated : 2026-10-14