Yima coal (Henan)
Henan, Yima coalfield (Yima Formation), China
Othercharbon (Hg)
- Type
- Coal deposit (high volatile B bituminous coal, Permian)
High volatile B bituminous coal seam of Permian age, calorific content of 12,679 Btu; mercury with a mean δ202Hg of -2.28 ‰ and Δ201Hg of -0.35 ‰ (Biswas et al., 2008). Non-homogenised sample; 1.1 ‰ spread between subsamples; with SH-1, signature judged possibly globally unique. The table gives a Permian age, whereas the Yima Formation is dated to the Middle Jurassic (Aalenian to Bajocian, Chinese stratigraphic lexicon). Indicative coordinates (Yima city).
δ202Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −2.28 ± 0.61 ‰ | −2.7 / −1.58 ‰ | 3 | coal (high volatile B bituminous coal) Mean and standard deviation recalculated from 3 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -1.58 ± 0.08 ‰ (2SD 2 analyses); -2.70 ± 0.01 ‰ (2SD 2 analyses); -2.57 ± 0.14 ‰ (2SD 3 analyses); 7 analyses in total; non-homogenised sample; 1.1 ‰ spread between subsamples; with SH-1, signature judged possibly globally unique. The table gives a Permian age, whereas the Yima Formation is dated to the Middle Jurassic (Aalenian to Bajocian, Chinese stratigraphic lexicon). | Biswas et al. (2008), Natural mercury isotope variation in coal deposits and organic soil… |
Δ201Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.35 ± 0.01 ‰ | −0.36 / −0.34 ‰ | 3 | coal (high volatile B bituminous coal) Mean and standard deviation recalculated from 3 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -0.35 ± 0.03 ‰ (2SD 2 analyses); -0.36 ± 0.02 ‰ (2SD 2 analyses); -0.34 ± 0.05 ‰ (2SD 3 analyses); 7 analyses in total; non-homogenised sample; 1.1 ‰ spread between subsamples; with SH-1, signature judged possibly globally unique. The table gives a Permian age, whereas the Yima Formation is dated to the Middle Jurassic (Aalenian to Bajocian, Chinese stratigraphic lexicon). | Biswas et al. (2008), Natural mercury isotope variation in coal deposits and organic soil… |
Δ199Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.4 ± 0.03 ‰ | −0.44 / −0.38 ‰ | 3 | coal (high volatile B bituminous coal) Mean and standard deviation recalculated from 3 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -0.44 ± 0.01 ‰ (2SD 2 analyses); -0.39 ± 0.05 ‰ (2SD 2 analyses); -0.38 ± 0.03 ‰ (2SD 3 analyses); 7 analyses in total; non-homogenised sample; 1.1 ‰ spread between subsamples; with SH-1, signature judged possibly globally unique. The table gives a Permian age, whereas the Yima Formation is dated to the Middle Jurassic (Aalenian to Bajocian, Chinese stratigraphic lexicon). | Biswas et al. (2008), Natural mercury isotope variation in coal deposits and organic soil… |
Deposits of the same type
Cite this page
IsoFind Atlas (2026). Yima coal (Henan), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/charbon-de-yima-henan/ (accessed 2026-10-15).
@misc{isofind2026yimacoalhenanisotopesignature,
title = {Yima coal (Henan), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/charbon-de-yima-henan/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15