Luobusa
Qusum, Yarlung-Zangbo suture zone, Tibet, China
Magmatic (Ni-Cu-PGE, carbonatites)Cr
- Type
- High-Cr podiform chromitites in an ophiolite
China's largest chromite deposit (about 7 Mt of ore, some 600 bodies) in harzburgites and the dunitic transition zone of the Luobusa ophiolite, 200 km east-south-east of Lhasa. Boninitic parental magma. Yarlung-Zangbo ophiolite chromites: 187Os/188Os of 0.1253 to 0.1293 (mean 0.1269), unradiogenic; light zinc ascribed to input from subducted serpentinites and sediments. Indicative coordinates.
δ66Zn in ‰ (per mil) Values of the same system
Standard : JMC 3-0749L
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.05 / 0.23 ‰ | chromite of chromitites Range given in the text; individual values in a supplement not included. All Yarlung-Zangbo chromitites: 0.14 ± 0.08 ‰ (1 SD, n = 13), below bulk silicate Earth (0.18 to 0.22 ‰). | Lian et al. (2024), Osmium and zinc isotope constraints on the origin of chromitites from… |
Deposits of the same type
- Jiajika, No. X03 vein China
- Jinchuan China
- Bailongshan China
- Renli-Chuanziyuan (Mufushan batholith) China
- Bayan Obo China
- Nuristan and Kunar pegmatites (Hindu Kush) Afghanistan
- Yashan (Yichun Ta-Nb-Li deposit) China
- Tong'an-Baishuidong lithium district (Wutang granites) China
Cite this page
IsoFind Atlas (2026). Luobusa, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/luobusa/ (accessed 2026-10-13).
@misc{isofind2026luobusaisotopesignatures,
title = {Luobusa, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/luobusa/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13