Xihuashan
Southern Jiangxi, Dayu (Nanling region), China
Other hydrothermalW (Sn, Mo, Bi)
- Type
- Quartz-wolframite veins related to a rare-metal granite
The largest wolframite vein deposit of the Nanling region (over 700 veins), related to the Jurassic Xihuashan granite (about 160 Ma). δ7Li increases from biotite to muscovite granite through diffusion during fluid-rock interaction, and greisens have negative δ7Li, a sign of intense open-system fluid-rock interaction. Tungsten mineralisation is linked to this open hydrothermal process.
δ7Li in ‰ (per mil) Values of the same system
Standard : L-SVEC
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.2 ± 0.57 ‰ | −0.2 / 0.6 ‰ | 2 | whole rock, biotite granite (phase B) Mean and standard deviation recalculated from 2 samples, Table 2. External reproducibility ± 1.0 ‰ (2 SD); most samples were analysed only once. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| 0.6 ± 0.14 ‰ | 0.5 / 0.7 ‰ | 2 | whole rock, two-mica granite (phase B) Mean and standard deviation recalculated from 2 samples, Table 2. External reproducibility ± 1.0 ‰ (2 SD); most samples were analysed only once. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| 3.15 ± 1.63 ‰ | 2 / 4.3 ‰ | 2 | whole rock, muscovite granite (phase B) Mean of 2 samples, each the mean of two repeated analyses (1.9 and 2.1; 4.4 and 4.1 ‰), Table 2. External reproducibility ± 1.0 ‰ (2 SD); most samples were analysed only once. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| −2.37 ± 0.25 ‰ | −2.6 / −2.1 ‰ | 3 | whole rock, greisen Mean and standard deviation of 3 samples, Table 2; XHS-01 is the mean of three analyses (-2.7, -2.5 and -2.7 ‰). External reproducibility ± 1.0 ‰ (2 SD); most samples were analysed only once. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| 14.13 ± 3.92 ‰ | 8.2 / 18.3 ‰ | 6 | quartz from granites and greisens Mean and standard deviation recalculated from 6 samples, Table 3. Very heavy quartz, lighter in the greisens (+8.2 and +11.0 ‰). | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| 0.52 ± 2.36 ‰ | −2.1 / 4.7 ‰ | 6 | micas from granites and greisens (biotite, protolithionite, zinnwaldite, Li-mica) Mean and standard deviation recalculated from 6 samples, Table 3. Whole-rock δ7Li follows that of the micas (R² = 0.88), the main lithium carrier. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
| 0.17 ± 0.59 ‰ | −0.5 / 0.9 ‰ | 4 | feldspars from the granites Mean and standard deviation recalculated from 4 samples, Table 3. | Li et al. (2018), Lithium isotope fractionation during magmatic differentiation and hydro… |
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.1 ± 0.2 ‰ | −1.6 / −0.7 ‰ | 16 | pyrite Mean and standard deviation recalculated from 16 samples, Table 2. Magmatic sulfur. | Wei et al. (2012), Infrared microthermometric and stable isotopic study of fluid inclusio… |
| −1.1 ± 0.3 ‰ | −1.4 / −0.5 ‰ | 9 | molybdenite Mean and standard deviation recalculated from 9 samples, Table 2. | Wei et al. (2012), Infrared microthermometric and stable isotopic study of fluid inclusio… |
| −0.1 ± 0.1 ‰ | −0.2 / 0.1 ‰ | 7 | arsenopyrite Mean and standard deviation recalculated from 7 samples, Table 2. | Wei et al. (2012), Infrared microthermometric and stable isotopic study of fluid inclusio… |
| −0.5 ± 0.2 ‰ | −0.7 / −0.3 ‰ | 5 | chalcopyrite Mean and standard deviation recalculated from 5 samples, Table 2. | Wei et al. (2012), Infrared microthermometric and stable isotopic study of fluid inclusio… |
δ18O in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 5.5 ± 0.5 ‰ | 4.8 / 6.3 ‰ | 9 | wolframite Mean and standard deviation recalculated from 9 samples, Table 3. Wolframite inclusions hotter and more saline than those in quartz (239 to 380 °C): deposition by mixing of two fluids. | Wei et al. (2012), Infrared microthermometric and stable isotopic study of fluid inclusio… |
| 4.96 ± 0.6 ‰ | 14 | wolframite of wolframite-molybdenite-quartz veins Published mean and standard deviation (Table 1), individual values not given. Formation temperature adopted 315 ± 30 °C. | Zhang (1988), Oxygen isotope studies of wolframite in tungsten ore deposits of south Chin… | |
| 11.81 ± 1.12 ‰ | 13 | quartz of wolframite-molybdenite-quartz veins Published mean and standard deviation (Table 1), individual values not given. Formation temperature adopted 315 ± 30 °C. | Zhang (1988), Oxygen isotope studies of wolframite in tungsten ore deposits of south Chin… | |
| −7 ‰ | 1 | scaly ferberite (huebnerite) of miarolitic cavities One analysis, Table 1. Very low value: 18O-poor meteoric water (hot springs or leaching). | Zhang (1988), Oxygen isotope studies of wolframite in tungsten ore deposits of south Chin… | |
| 12.8 ± 0.8 ‰ | 11.4 / 13.8 ‰ | 6 | quartz from wolframite veins (main stage) Mean and standard deviation recalculated from 6 samples, Table 6. Calculated fluid from 5.6 to 8.0 ‰ at 331 °C: magmatic fluid. | Yang et al. (2019), Metal source and wolframite precipitation process at the Xihuashan tu… |
| 5.7 ± 0.5 ‰ | 5.2 / 6.6 ‰ | 5 | wolframite (main stage) Mean and standard deviation recalculated from 5 samples, Table 6. Calculated fluid from 7.4 to 8.8 ‰ at 331 °C; quartz-wolframite equilibrium at 470-553 °C, above homogenisation temperatures. | Yang et al. (2019), Metal source and wolframite precipitation process at the Xihuashan tu… |
δD in ‰ (per mil) Values of the same system
Standard : V-SMOW
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −68 ± 6 ‰ | −74 / −58 ‰ | 6 | fluid inclusion water in quartz (main stage) Mean and standard deviation recalculated from 6 samples, Table 6. | Yang et al. (2019), Metal source and wolframite precipitation process at the Xihuashan tu… |
| −76 ± 7 ‰ | −82 / −64 ‰ | 5 | fluid inclusion water in wolframite (main stage) Mean and standard deviation recalculated from 5 samples, Table 6. Similar to quartz: magmatic fluid trapped simultaneously by both minerals. | Yang et al. (2019), Metal source and wolframite precipitation process at the Xihuashan tu… |
Deposits of the same type
- Dangping China
- Piaotang China
- Maoping (tungsten, Jiangxi) China
- Dajishan China
- Yaoling China
- Kuimeishan (Guimeishan) China
- Yaogangxian China
- Hongling China
Cite this page
IsoFind Atlas (2026). Xihuashan, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/xihuashan/ (accessed 2026-10-13).
@misc{isofind2026xihuashanisotopesignatures,
title = {Xihuashan, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/xihuashan/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13