Wengquangou
Eastern Liaoning, 30 km northwest of Fengcheng, China
OtherB-Fe
- Type
- Borates (ludwigite and szaibelyite) and iron in serpentinized ultrabasic rocks
Palaeoproterozoic borate and iron deposit (ludwigite, decomposed to szaibelyite during retrograde metamorphism) in a sequence over 800 m thick of serpentinized olivine basalts and dolomitic marbles, surrounded by leptynites, leptites, amphibolites and migmatites. Hu et al. (2015): ludwigite from +6.8 to +8.2 ‰; boron from marine evaporites around 2.2 Ga, at the onset of the Liaoji rift.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 7.8 / 8.2 ‰ | 3 | ludwigite of the orebody, sample WQG-3 Range only. | Hu et al. (2015), In situ LA-MC-ICP-MS boron isotope and zircon U-Pb age determinations o… | |
| 6.8 / 7.8 ‰ | 3 | ludwigite of the orebody, sample WQG-15 Range only. | Hu et al. (2015), In situ LA-MC-ICP-MS boron isotope and zircon U-Pb age determinations o… | |
| 7.63 ± 0.52 ‰ | 6.75 / 8.1 ‰ | 5 | orebody ludwigite Mean and standard deviation recalculated from 5 analyses, +6.75 to +8.10 (LN-18 +7.75; MP94-12 +6.75; MP94-14 +7.85; MP94-15 +8.10; MP94-16 +7.70). Replicates averaged before calculation: LN-18 +7.5 and +8.0; MP94-12 +6.9 and +6.6; MP94-14 +7.8 and +7.9; MP94-15 +8.2 and +8.0; MP94-16 +7.4 and +8.0. Iron-magnesian deposit; the authors give 7.6 ± 0.5 ‰ (n = 5), lower than the magnesian borates. | Peng & Palmer (2002), The Paleoproterozoic Mg and Mg-Fe borate deposits of Liaoning and J… |
| −12.35 ± 0.07 ‰ | −12.4 / −12.3 ‰ | 2 | tourmaline from a felsic vein (LN-15) Mean and standard deviation recalculated from 2 analyses, -12.40 to -12.30 (LN-15 -12.30; LN-15 -12.40). Two measurements of the same sample. Lowest value of the study, isolated. | Peng & Palmer (2002), The Paleoproterozoic Mg and Mg-Fe borate deposits of Liaoning and J… |
| 0.15 ± 3.3 ‰ | −3.55 / 2.8 ‰ | 3 | tourmaline from tourmaline-phlogopite, pyrite and quartz veins (LN-21a to LN-21c) Mean and standard deviation recalculated from 3 analyses, -3.55 to +2.80 (LN-21a +2.80; LN-21b +1.20; LN-21c -3.55). Replicates averaged before calculation: LN-21a +3.2 and +2.4; LN-21b +1.3 and +1.1; LN-21c -4.0 and -3.1. LN-21a tourmaline-phlogopite vein, LN-21b pyrite-tourmaline-quartz, LN-21c quartz-tourmaline. | Peng & Palmer (2002), The Paleoproterozoic Mg and Mg-Fe borate deposits of Liaoning and J… |
δ13C in ‰ (per mil) Values of the same system
Standard : V-PDB
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.5 ± 1.9 ‰ | −2.7 / 1.8 ‰ | 5 | serpentinized marble Mean and standard deviation recalculated from 5 analyses, -2.7 to +1.8 (12WQG-3 +1.8; 12WQG-14 -2.6; 12WQG-15 -2.4; 12WQG-16 -1.8; 12WQG-17 -2.7). 12WQG-18 (-2.9 ‰), credited to Wang (2007), is not included. | Hu et al. (2015), In situ LA-MC-ICP-MS boron isotope and zircon U-Pb age determinations o… |
Deposits of the same type
- Central African Copperbelt (whole province) DR Congo and Zambia
- Witwatersrand basin South Africa
- Stelvio Italy
- Oris Italy
- Kupferschiefer, Lubin-Sieroszowice district Poland
- Timna Israël
- Datangpo-type manganese (Gaolou, Minle, Zhenxing) China
- Eyller Bruch bog iron ore Germany
Cite this page
IsoFind Atlas (2026). Wengquangou, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/wengquangou/ (accessed 2026-10-20).
@misc{isofind2026wengquangouisotopesignatures,
title = {Wengquangou, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/wengquangou/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20