Beiya
Heqing County, Dali, Yunnan, China
SkarnsAu-Pb-Zn (Fe)
- Type
- Skarn and alkali syenite porphyry gold and lead-zinc
Cenozoic alkali-rich porphyry belt of Jinshajiang-Ailaoshan (western Yunnan): silicon of the mineralising fluids (silicified quartz, hemimorphite) lighter than that of the porphyries (0.0 to 0.4 ‰), two sources according to the authors. Syenite porphyry in contact with Triassic carbonates, skarnification with intense silicification and hematitisation. Approximate position of the ore field. Indicative coordinates.
δ30Si in ‰ (per mil) Values of the same system
Standard : NBS 28
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.4 ‰ | 1 | hemimorphite of Pb-Zn altered rock Single analysis, HB-55-3, lowest value of the study. Feldspar phenocryst 0.4 ‰, skarnified porphyry with Ca-Cr garnet 0.3 ‰, Triassic siltstone 0.7 ‰. | Liu et al. (2004), Geochemical trace of silicon isotopes of intrusions and ore veins rela… |
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Cite this page
IsoFind Atlas (2026). Beiya, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/beiya/ (accessed 2026-10-13).
@misc{isofind2026beiyaisotopesignatures,
title = {Beiya, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/beiya/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13