Huangbaishuwan (Ziyang)

Shaanxi, Ziyang, north Daba Mountains witherite belt, China

OtherBa

Type: Stratiform witherite in Lower Cambrian siliceous rocks

Medium-sized witherite deposit in the Lower Cambrian Lujiaping Formation, in beds between deep-water siliceous rocks and shallower slates; bioclastic textures and biogenic barite replaced by witherite in the sulphate reduction zone. Lü et al. (2003): witherite from -18.4 to -0.4 ‰ in δ11B and δ13C from -16.6 to -11.6 ‰; formed in pore water during early diagenesis.

δ11B in ‰ (per mil) Values of the same system

Standard : NIST SRM 951

Value	Range	n	Mineral or matrix	Source
−10.5 ± 4.9 ‰	−18.4 / −0.4 ‰	8	witherite Mean and standard deviation recalculated from 8 analyses, -18.4 to -0.4 (Wm-4 -0.4; HB-3 -9.9; HB-2 -18.4; HB-7 -11.2; HB-8 -12.4; Wm-7 -10.7; HB-1 -9.7; W-2 -11.6). Boron from pore water and degraded organic matter during early diagenesis, with minor deep basinal brine; carbon from sedimentary organic matter according to the authors. Wm-2 without a δ11B value.	Lü et al. (2003), Carbon, oxygen and boron isotopic studies of Huangbaishuwan witherite d…
−6.2 ‰		1	barytocalcite Single analysis (Wm-3).	Lü et al. (2003), Carbon, oxygen and boron isotopic studies of Huangbaishuwan witherite d…

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Cite this page

IsoFind Atlas (2026). Huangbaishuwan (Ziyang), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/huangbaishuwan-ziyang/ (accessed 2026-10-19).

@misc{isofind2026huangbaishuwanziyangisotopesi,
  title = {Huangbaishuwan (Ziyang), isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/deposits/huangbaishuwan-ziyang/},
  note = {Accessed 2026-10-19}
}

Updated : 2026-10-19