Panzhihua
Sichuan, Emeishan large igneous province, China
Magmatic (Ni-Cu-PGE, carbonatites)Fe-Ti-V
- Type
- Magmatic iron-titanium-vanadium in a layered gabbroic intrusion
Layered gabbroic intrusion of about 260 Ma linked to the Emeishan province, holding a large share of Chinese Fe, Ti and V resources; marginal, lower (Fe-Ti oxide layers), middle and upper zones. Lv et al. (2024): whole-rock δ51V from -0.82 to -0.49 ‰ in the lower zone, -0.35 to +1.70 ‰ in the middle zone; parental magma about -0.83 ± 0.19 ‰ (marginal and upper zones); oxide layers attributed to silicate liquid immiscibility.
δ51V in ‰ (per mil) Values of the same system
Standard : AA (Alfa Aesar)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.81 ± 0.1 ‰ | −0.96 / −0.72 ‰ | 5 | whole rock, marginal (5-35 m) and upper (1180-1262 m) zones Mean and standard deviation recalculated from 5 analyses, -0.96 to -0.72 (LJ1482 -0.96; LJ1487 -0.83; LJ1410 -0.74; LJ1410 (2) -0.72; LJ1407 -0.78). Published whole-rock mean, taken as the parental magma: -0.83 ± 0.19 ‰ (2 s, n = 4). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| −0.8 ± 0.08 ‰ | −0.91 / −0.74 ‰ | 4 | clinopyroxene, marginal (5-35 m) and upper (1180-1262 m) zones Mean and standard deviation recalculated from 4 analyses, -0.91 to -0.74 (LJ1482 -0.75; LJ1487 -0.74; LJ1410 -0.79; LJ1407 -0.91). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| −0.87 ± 0.12 ‰ | −1.01 / −0.7 ‰ | 5 | magnetite, marginal (5-35 m) and upper (1180-1262 m) zones Mean and standard deviation recalculated from 5 analyses, -1.01 to -0.70 (LJ1482 -1.01; LJ1487 -0.95; LJ1410 -0.90; LJ1407 -0.70; LJ1407 (2) -0.79). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| −0.69 ± 0.11 ‰ | −0.82 / −0.49 ‰ | 6 | whole rock, lower zone with oxide layers (100-213 m) Mean and standard deviation recalculated from 6 analyses, -0.82 to -0.49 (LJ1430 -0.49; LJ1427 -0.67; LJ1426 -0.71; LJ1426 (2) -0.75; LJ1424 -0.68; LJ1420 -0.82). Whole rock matches clinopyroxene and magnetite at each level, read as the mark of silicate liquid immiscibility. | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| −0.62 ± 0.11 ‰ | −0.83 / −0.55 ‰ | 6 | clinopyroxene, lower zone with oxide layers (100-213 m) Mean and standard deviation recalculated from 6 analyses, -0.83 to -0.55 (LJ1430 -0.55; LJ1427 -0.66; LJ1426 -0.57; LJ1426 (2) -0.55; LJ1424 -0.57; LJ1420 -0.83). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| −0.76 ± 0.06 ‰ | −0.83 / −0.68 ‰ | 5 | magnetite, lower zone with oxide layers (100-213 m) Mean and standard deviation recalculated from 5 analyses, -0.83 to -0.68 (LJ1430 -0.68; LJ1427 -0.74; LJ1426 -0.81; LJ1424 -0.75; LJ1420 -0.83). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| 0.15 ± 0.62 ‰ | −0.35 / 1.7 ‰ | 9 | whole rock, middle zone (452-951 m) Mean and standard deviation recalculated from 9 analyses, -0.35 to +1.70 (LJ1434 +1.70; LJ1438 -0.14; LJ1445 +0.08; LJ1453 +0.44; LJ1457 -0.35; LJ1458 -0.14; LJ1461 -0.02; LJ1462 -0.14; LJ1463 -0.11). Heavy values attributed to fractional crystallisation of Fe-Ti oxides (magnetite-melt Δ51V of -0.63 ‰ after Sossi et al., 2018, assumed for the other minerals); LJ1434 (951 m) reaches +1.70 ‰. | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| 0.18 ± 0.5 ‰ | −0.22 / 1.17 ‰ | 9 | clinopyroxene, middle zone (452-951 m) Mean and standard deviation recalculated from 9 analyses, -0.22 to +1.17 (LJ1434 +1.17; LJ1438 -0.03; LJ1445 +0.58; LJ1453 +0.64; LJ1457 -0.18; LJ1458 -0.17; LJ1461 -0.22; LJ1462 -0.15; LJ1463 -0.03). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
| 0.09 ± 0.7 ‰ | −0.42 / 1.68 ‰ | 9 | magnetite, middle zone (452-951 m) Mean and standard deviation recalculated from 9 analyses, -0.42 to +1.68 (LJ1434 +1.68; LJ1438 -0.23; LJ1453 +0.53; LJ1453 (2) +0.50; LJ1457 -0.42; LJ1458 -0.19; LJ1461 -0.28; LJ1462 -0.35; LJ1463 -0.39). | Lv et al. (2024), Formation of layered intrusion: a perspective from vanadium isotopes, L… |
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Cite this page
IsoFind Atlas (2026). Panzhihua, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/panzhihua/ (accessed 2026-10-20).
@misc{isofind2026panzhihuaisotopesignatures,
title = {Panzhihua, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/panzhihua/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20