Hulu
Xinjiang, Eastern Tianshan (southern margin of the Central Asian Orogenic Belt), China
Magmatic (Ni-Cu-PGE, carbonatites)Ni-Cu
- Type
- Magmatic Ni-Cu sulphides (mafic-ultramafic intrusion, orogenic setting)
Deposit of about 0.08 Mt Ni: sheet-like mafic-ultramafic sequence in the upper intrusion, poorly studied conduit-like unit at depth. Massive ore sample from the sheet (pyrrhotite about 88 %, pentlandite about 10 % in discordant veins, minor chalcopyrite). Heavy nickel: evolved magmas that lost sulphide at depth, then resaturated by crustal sulphur input (δ34S -1.47 to +2.64 ‰) according to Ma et al. (2025). Coordinates not given.
δ60Ni in ‰ (per mil) Values of the same system
Standard : NIST SRM 986
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.05 ± 0.13 ‰ | −0.04 / 0.14 ‰ | 2 | chalcopyrite of the massive ore (HL-1-H) Mean and standard deviation recalculated from 2 analyses, possible pentlandite contamination during micro-drilling according to the authors. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
| 0.21 ± 0.06 ‰ | 0.13 / 0.3 ‰ | 7 | pentlandite of the massive ore (HL-1-H) 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 … |
| −0.1 ± 0.07 ‰ | −0.17 / −0.03 ‰ | 4 | pyrrhotite of the massive ore (HL-1-H) Mean and standard deviation recalculated from 4 analyses. | Ma et al. (2025), Nickel isotopic variations in Ni–Cu sulfide deposits: from theoretical … |
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Cite this page
IsoFind Atlas (2026). Hulu, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/hulu/ (accessed 2026-10-14).
@misc{isofind2026huluisotopesignatures,
title = {Hulu, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/hulu/},
note = {Accessed 2026-10-14}
}Updated : 2026-10-14