Houxianyu
Eastern Liaoning, Kuandian (Paleoproterozoic Liaohe Group belt), China
OtherB
- Type
- Metamorphosed magnesian borates (suanite, szaibelyite, ludwigite) in magnesian rocks and metavolcanic rocks
One of the main boron sources of China, in boron-rich metavolcanic and sedimentary rocks of the Liaohe Group; suanite, szaibelyite and ludwigite bodies associated with magnesian carbonates and silicates, bedded tourmalinites and tourmaline veins, underlying granite. Origin debated: metamorphosed evaporite with a marine component (Jiang et al., 1997) or boron leached by metamorphic fluids then trapped against marine magnesian carbonates (Yan and Chen, 2014). Pyrite δ34S in the borates from +9.1 to +17.3 ‰ (Wang and Han, 1989, quoted by Jiang et al., 1997).
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 10.4 ± 0.6 ‰ | 9.6 / 11.1 ‰ | 6 | borates (suanite, fibrous szaibelyite, ludwigite) Mean and standard deviation recalculated from 6 analyses, +9.6 to +11.1 (501-1-7 suanite +10.9; 501-1-7 suanite +11.1; ZR-16 szaïbélyite +9.6; ZR-16 szaïbélyite +10.3; 501-4-6 ludwigite +10.1; 501-4-6 ludwigite +10.2). Highest values of the deposit. Trigonal boron in suanite and ludwigite: a granitic fluid (at most +3 ‰) could not give +10 ‰, hence the authors reject the skarn model. | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 8 ± 0.3 ‰ | 7.6 / 8.4 ‰ | 6 | orebody tourmaline (tremolite-phlogopite altered rock, quartz vein, cross-cutting dyke) Mean and standard deviation recalculated from 6 analyses, +7.6 to +8.4 (501-1-4 +7.9; 501-1-4 +8.3; 501-1-5 +7.6; 501-1-5 +7.6; 501-3-8 +8.0; 501-3-8 +8.4). 501-1-4 and 501-1-5 in orebody No. 1, 501-3-8 tourmaline dyke cutting orebody and host rocks. | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 6.9 ± 0.2 ‰ | 6.7 / 7 ‰ | 4 | hanging-wall tourmaline (bedded tourmalinite, albite leptite) Mean and standard deviation recalculated from 4 analyses, +6.7 to +7.0 (501-5-10 tourmalinite +6.7; 501-5-10 tourmalinite +7.0; 501-5-2 leptite +6.7; 501-5-2 leptite +7.0). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 9.5 ± 0.2 ‰ | 9.2 / 9.7 ‰ | 4 | tourmalinite (position not stated) Mean and standard deviation recalculated from 4 analyses, +9.2 to +9.7 (Kg-6-4 +9.5; Kg-6-4 +9.7; M-3 +9.2; M-3 +9.4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 8 ± 0.2 ‰ | 7.8 / 8.1 ‰ | 2 | pegmatite tourmaline Mean and standard deviation recalculated from 2 analyses, +7.8 to +8.1 (DP25-2 +7.8; DP25-2 +8.1). Two runs. | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 9.27 ± 1.37 ‰ | 4.69 / 12.43 ‰ | 34 | tourmaline of orebody tourmalinites (HX-3, HX-4) Mean and standard deviation recalculated from 34 analyses, +4.69 to +12.43 (+10.42; +12.43; +10.26; +8.76; +8.34; +7.82; +8.85; +8.87; +8.77; +10.21; +10.85; +11.23; +9.02; +10.93; +11.16; +9.36; +8.80; +10.05; +8.87; +9.15; +8.75; +8.91; +9.07; +10.60; +9.92; +4.69; +7.52; +7.45; +9.15; +8.42; +9.09; +9.56; +9.40; +8.39). HX-3-01 listed under HX-4 in the table. Zoned grains: detrital core heavier than the overgrowth (11.23 against 7.82 ‰ in one grain). | Yan & Chen (2014), Chemical and boron isotopic compositions of tourmaline from the Paleop… |
| 7.59 ± 1.72 ‰ | 4.51 / 9.36 ‰ | 15 | tourmaline of orebody tourmalinites (HX-5) Mean and standard deviation recalculated from 15 analyses, +4.51 to +9.36 (+7.43; +8.18; +8.49; +8.81; +9.27; +8.64; +8.42; +9.36; +4.76; +4.61; +7.75; +4.51; +6.18; +8.65; +8.75). Zoned grain: core 7.75 ‰, rim 4.76 ‰. | Yan & Chen (2014), Chemical and boron isotopic compositions of tourmaline from the Paleop… |
| 8.08 ± 0.32 ‰ | 7.75 / 8.58 ‰ | 5 | tourmaline of tourmaline-amphibole-quartz veins (HX-13) Mean and standard deviation recalculated from 5 analyses, +7.75 to +8.58 (+7.86; +8.12; +8.07; +8.58; +7.75). | Yan & Chen (2014), Chemical and boron isotopic compositions of tourmaline from the Paleop… |
| 8.69 ± 0.26 ‰ | 8.36 / 9 ‰ | 4 | tourmaline of tourmaline-quartz veins (HX-24) Mean and standard deviation recalculated from 4 analyses, +8.36 to +9.00 (+8.66; +8.72; +9.00; +8.36). | Yan & Chen (2014), Chemical and boron isotopic compositions of tourmaline from the Paleop… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 9.6 ± 0.4 ‰ | 9.3 / 9.8 ‰ | 2 | suanite Mean and standard deviation recalculated from 2 analyses, +9.3 to +9.8 (501-1-7 +9.3; 501-5-18 +9.8). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 5.8 ± 0.7 ‰ | 5.3 / 6.3 ‰ | 2 | massive szaibelyite Mean and standard deviation recalculated from 2 analyses, +5.3 to +6.3 (501-4-5 +6.3; 501-5-17 +5.3). Difference with suanite ascribed to mineral fractionation or later formation. | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 12.6 ± 0.7 ‰ | 12.1 / 13.1 ‰ | 2 | quartz of tourmalinite and vein Mean and standard deviation recalculated from 2 analyses, +12.1 to +13.1 (501-5-10 +12.1; 501-1-5 +13.1). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 7.5 ± 1.2 ‰ | 6.1 / 8.4 ‰ | 3 | phlogopite of ore and altered rocks Mean and standard deviation recalculated from 3 analyses, +6.1 to +8.4 (501-1-4 +7.9; 501-5-18 +8.4; 501-3-3 +6.1). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 8 ‰ | 1 | tremolite of altered rock Single analysis (501-1-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… | |
| 6.7 ‰ | 1 | biotite of footwall leptynite Single analysis (501-5-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… | |
| 9.9 ‰ | 1 | albite of footwall leptynite Single analysis (501-5-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
δ30Si in ‰ (per mil) Values of the same system
Standard : NBS 28
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.2 ± 0.1 ‰ | 0.1 / 0.2 ‰ | 2 | quartz of tourmalinite and vein Mean and standard deviation recalculated from 2 analyses, +0.1 to +0.2 (501-5-10 +0.1; 501-1-5 +0.2). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| 0.6 ± 0.6 ‰ | 0 / 1.2 ‰ | 3 | phlogopite of ore and altered rocks Mean and standard deviation recalculated from 3 analyses, 0.0 to +1.2 (501-1-4 0.0; 501-5-18 +1.2; 501-3-3 +0.7). Positive values of 501-5-18 (ore) and 501-3-3 (altered siliceous rock): part of marine chemical or biogenic silica according to the authors. | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
| −0.1 ‰ | 1 | tremolite of altered rock Single analysis (501-1-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… | |
| −0.3 ‰ | 1 | biotite of footwall leptynite Single analysis (501-5-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… | |
| 0 ‰ | 1 | albite of footwall leptynite Single analysis (501-5-4). | Jiang et al. (1997), Chemical and stable isotopic compositions of Proterozoic metamorphos… |
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Cite this page
IsoFind Atlas (2026). Houxianyu, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/houxianyu/ (accessed 2026-10-19).
@misc{isofind2026houxianyuisotopesignatures,
title = {Houxianyu, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/houxianyu/},
note = {Accessed 2026-10-19}
}Updated : 2026-10-19