Bianjiadayuan
Inner Mongolia, Linxi (Chifeng), Great Hinggan Range, China
Other hydrothermalAg, Pb, Zn (Sn)
- Type
- Ag-Pb-Zn veins in slate, next to a Sn (Cu, Mo) mineralised porphyry
4.81 Mt at 157.4 g/t Ag and 3.94 % Pb + Zn, silver grades up to 3000 g/t. Veins controlled by NW faults in slate and siltstone of the Permian Zhesi Formation, cut by a gabbro (133.2 ± 0.9 Ma), a quartz porphyry (140.2 ± 1.2 Ma) and dykes of 129.6 to 130.5 Ma (zircon U-Pb, Wang, 2014). Four sequences: arsenopyrite-pyrite-quartz, main sulfides, silver sulfosalts (dominant freibergite) and boulangerite-calcite, then supergene oxidation. Zhai et al. (2019): magmatic sulfur and lead, linked to the local granitic intrusion; silver deposited through cooling and decreasing fO2 and fS2. Indicative coordinates: deposit position from its Mindat entry (43°31′25″ N, 118°03′45″ E), not published in the paper.
δ34S in ‰ (per mil) Values of the same system
Standard : V-CDT
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.7 ± 0.48 ‰ | −0.7 / 1.3 ‰ | 13 | galena of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 13 analyses, -0.70 to +1.30 (BJ52-1 (735 m) +0.57; BJ52-4 (735 m) +0.57; BJ52-6 (735 m) +0.92; BJ5-1-1 (775 m) +0.71; BJ5-1-3 (775 m) +0.69; BJ86-3 (730 m) +0.58; BJ86-6 (730 m) +0.85; BJ12-45-1 (735 m) -0.70; BJ4-2-2 (710 m) +0.74; BJ4-2-4 (710 m) +1.19; BJ4-2-7 (710 m) +0.89; BJ4-2-8 (710 m) +0.83; BJ1-1 (770 m) +1.30). Sampling elevation in brackets. Published mean +0.7 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 2.26 ± 0.83 ‰ | 0.06 / 2.7 ‰ | 9 | sphalerite of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 9 analyses, +0.06 to +2.70 (BJ52-7 (735 m) +2.43; BJ5-1-4 (775 m) +2.53; BJ04-2 (775 m) +2.53; BJ86-1 (730 m) +2.62; BJ86-5 (730 m) +2.47; BJ4-2-5 (710 m) +2.40; BJ4-2-6 (710 m) +0.06; BJ1-2 (770 m) +2.62; BJ1-4 (770 m) +2.70). Sampling elevation in brackets. Published mean +2.3 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 1.77 ± 0.44 ‰ | 1.04 / 2.31 ‰ | 8 | pyrrhotite of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 8 analyses, +1.04 to +2.31 (BJ52-3 (735 m) +1.64; BJ52-5 (735 m) +1.87; BJ52-8 (735 m) +1.95; BJ5-1-2 (775 m) +1.98; BJ86-4 (730 m) +2.10; BJ12-45-2 (735 m) +1.23; BJ12-45-4 (735 m) +1.04; BJ1-3 (770 m) +2.31). Sampling elevation in brackets. Published mean +1.8 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 1.92 ± 0.23 ‰ | 1.7 / 2.15 ‰ | 3 | pyrite of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 3 analyses, +1.70 to +2.15 (BJ52-2 (735 m) +1.70; BJ04-1 (775 m) +2.15; BJ4-2-1 (710 m) +1.91). Sampling elevation in brackets. Published mean +1.9 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 1.76 ± 0.87 ‰ | 0.91 / 2.65 ‰ | 3 | chalcopyrite of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 3 analyses, +0.91 to +2.65 (BJ86-2 (730 m) +2.65; BJ12-45-3 (735 m) +0.91; BJ4-2-3 (710 m) +1.73). Sampling elevation in brackets. Published mean +1.8 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 2.13 ± 0.09 ‰ | 2.06 / 2.19 ‰ | 2 | marcasite of the Ag-Pb-Zn veins Mean and standard deviation recalculated from 2 analyses, +2.06 to +2.19 (BJ4-2-10 (710 m) +2.19; BJ4-2-9 (710 m) +2.06). Sampling elevation in brackets. Published mean +2.1 ‰; all 38 sulfides from -0.7 to +2.7 ‰, mean +1.6 ‰. | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 18.195 ± 0.038 | 18.155 / 18.253 | 6 | vein galena Mean and standard deviation recalculated from 6 analyses, 18.155 to 18.253 (BJ-15-1 18.174; BJ-50 18.155; BJ-52-1 18.218; BJ-12-19 18.253; BJ-12-40 18.208; BJ-08 18.1625). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 18.206 ± 0.046 | 18.156 / 18.284 | 9 | vein sphalerite, pyrrhotite, arsenopyrite and chalcopyrite Mean and standard deviation recalculated from 9 analyses, 18.156 to 18.284 (BJ-52-2 (sphalerite) 18.156; BJ-08-2 (sphalerite) 18.1612; BJ-01 (sphalerite) 18.1756; BJ-54 (sphalerite) 18.226; BJ-15-2 (pyrrhotite) 18.194; BJ-12-05 (pyrrhotite) 18.284; BJ-12-31 (arsénopyrite) 18.213; BJ-04 (arsénopyrite) 18.1772; BJ-15-3 (chalcopyrite) 18.270). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 15.577 ± 0.044 | 15.521 / 15.644 | 6 | vein galena Mean and standard deviation recalculated from 6 analyses, 15.521 to 15.644 (BJ-15-1 15.546; BJ-50 15.521; BJ-52-1 15.603; BJ-12-19 15.644; BJ-12-40 15.588; BJ-08 15.5595). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 15.59 ± 0.054 | 15.518 / 15.681 | 9 | vein sphalerite, pyrrhotite, arsenopyrite and chalcopyrite Mean and standard deviation recalculated from 9 analyses, 15.518 to 15.681 (BJ-52-2 (sphalerite) 15.518; BJ-08-2 (sphalerite) 15.5586; BJ-01 (sphalerite) 15.557; BJ-54 (sphalerite) 15.614; BJ-15-2 (pyrrhotite) 15.566; BJ-12-05 (pyrrhotite) 15.681; BJ-12-31 (arsénopyrite) 15.594; BJ-04 (arsénopyrite) 15.5586; BJ-15-3 (chalcopyrite) 15.667). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 38.285 ± 0.141 | 38.109 / 38.501 | 6 | vein galena Mean and standard deviation recalculated from 6 analyses, 38.109 to 38.501 (BJ-15-1 38.189; BJ-50 38.109; BJ-52-1 38.370; BJ-12-19 38.501; BJ-12-40 38.322; BJ-08 38.2198). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
| 38.333 ± 0.184 | 38.1 / 38.634 | 9 | vein sphalerite, pyrrhotite, arsenopyrite and chalcopyrite Mean and standard deviation recalculated from 9 analyses, 38.100 to 38.634 (BJ-52-2 (sphalerite) 38.100; BJ-08-2 (sphalerite) 38.2177; BJ-01 (sphalerite) 38.2056; BJ-54 (sphalerite) 38.411; BJ-15-2 (pyrrhotite) 38.254; BJ-12-05 (pyrrhotite) 38.634; BJ-12-31 (arsénopyrite) 38.375; BJ-04 (arsénopyrite) 38.210; BJ-15-3 (chalcopyrite) 38.594). The text states 18.155 to 18.372, 15.518 to 15.797 and 38.100 to 39.008; the Table 4 maxima are lower (18.284, 15.681 and 38.634). | Zhai et al. (2019), Mineralogical, textural, sulfur and lead isotope constraints on the o… |
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Cite this page
IsoFind Atlas (2026). Bianjiadayuan, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bianjiadayuan/ (accessed 2026-10-22).
@misc{isofind2026bianjiadayuanisotopesignature,
title = {Bianjiadayuan, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bianjiadayuan/},
note = {Accessed 2026-10-22}
}Updated : 2026-10-22