Bilihe
Inner Mongolia, Bainaimiao arc (northern margin of the North China Craton), China
PorphyriesAu
- Type
- Porphyry gold related to Permian granite porphyries
First large porphyry gold deposit on the northern margin of the North China Craton: over 30 t gold at 2.7 g/t on average, over 90 % in Belts I and II; host rocks of Upper Carboniferous to Lower Permian marine limestones and tuffaceous sandstones, Permian intrusions (granite, granite porphyry, quartz diorite); hydrothermal tourmaline breccias. Li et al. (2022): tourmaline from +0.7 to +6.3 ‰ in Belt II (heavy boron leached from marine carbonates) and from -8.8 to -3.5 ‰ in the breccia pipe (magmatic fluid with light boron).
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.8 ± 0.57 ‰ | 0.65 / 2.49 ‰ | 8 | tourmaline A from quartz-magnetite veins and potassic alteration (Belt II, BL036) Mean and standard deviation recalculated from 8 analyses, +0.65 to +2.49 (BL036-001 +1.53; BL036-002 +1.52; BL036-003 +2.49; BL036-004 +2.16; BL036-005 +1.83; BL036-006 +2.13; BL036-007 +0.65; BL036-008 +2.11). Published mean +1.8 ± 0.6 ‰. BL036-007 and -008 in the potassic-altered rock, the others in the veins. Early stage near 600 °C (Ti-in-quartz): calculated fluid +2.0 to +3.8 ‰. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| 4.24 ± 0.92 ‰ | 2.84 / 5.31 ‰ | 9 | tourmaline B from auriferous quartz veinlets (Belt II, BL723) Mean and standard deviation recalculated from 9 analyses, +2.84 to +5.31 (BL723-001 +5.31; BL723-002 +5.28; BL723-003 +4.97; BL723-004 +4.29; BL723-005 +3.32; BL723-006 +2.84; BL723-007 +4.53; BL723-008 +3.22; BL723-009 +4.42). Published mean +4.2 ± 0.9 ‰. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| 5.32 ± 0.96 ‰ | 3.78 / 6.28 ‰ | 8 | tourmaline C from the intermediate argillic zone (Belt II, BL019) Mean and standard deviation recalculated from 8 analyses, +3.78 to +6.28 (BL019-001 +6.28; BL019-002 +3.78; BL019-003 +5.94; BL019-004 +5.96; BL019-005 +5.25; BL019-006 +5.76; BL019-007 +3.90; BL019-008 +5.68). Published mean +5.3 ± 1.0 ‰. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| 3.08 ± 1.13 ‰ | 1.59 / 4.55 ‰ | 8 | tourmaline D from late quartz-pyrite-carbonate-tourmaline veins (Belt II, BL007) Mean and standard deviation recalculated from 8 analyses, +1.59 to +4.55 (BL007-001 +2.65; BL007-002 +2.51; BL007-003 +1.59; BL007-004 +2.13; BL007-005 +4.55; BL007-006 +4.31; BL007-007 +2.63; BL007-008 +4.29). Published mean +3.1 ± 1.0 ‰. No difference between cores and rims. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| −7.95 ± 0.5 ‰ | −8.76 / −7.39 ‰ | 10 | tourmaline HB1 from the hydrothermal breccia pipe (cores, BL713) Mean and standard deviation recalculated from 10 analyses, -8.76 to -7.39 (BL713-001 -7.99; BL713-002 -8.76; BL713-003 -7.54; BL713-004 -7.49; BL713-005 -8.75; BL713-006 -7.57; BL713-007 -8.17; BL713-008 -7.80; BL713-009 -8.08; BL713-010 -7.39). Published mean -8.0 ± 0.5 ‰. Breccia hosted in basalts; δ11B increasing from HB1 to HB3 by fractionation according to the authors. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| −5.95 ± 0.67 ‰ | −6.63 / −4.72 ‰ | 11 | tourmaline HB2 from the hydrothermal breccia pipe (BL713) Mean and standard deviation recalculated from 11 analyses, -6.63 to -4.72 (BL713-011 -6.25; BL713-012 -6.07; BL713-013 -5.36; BL713-014 -6.23; BL713-015 -6.53; BL713-016 -4.72; BL713-017 -6.60; BL713-018 -6.48; BL713-019 -5.43; BL713-020 -6.63; BL713-021 -5.11). Published mean -5.9 ± 0.7 ‰. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
| −3.94 ± 0.55 ‰ | −4.74 / −3.49 ‰ | 4 | tourmaline HB3 from the hydrothermal breccia pipe (rims, BL713) Mean and standard deviation recalculated from 4 analyses, -4.74 to -3.49 (BL713-022 -4.74; BL713-023 -3.74; BL713-024 -3.78; BL713-025 -3.49). Published mean -3.9 ± 0.2 ‰. | Li et al. (2022), Tourmaline as a potential mineral for exploring porphyry deposits: a ca… |
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Cite this page
IsoFind Atlas (2026). Bilihe, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/bilihe/ (accessed 2026-10-20).
@misc{isofind2026biliheisotopesignatures,
title = {Bilihe, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/bilihe/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20