Lower Philpot seam (Arkansas)
Arkansas, Interior Province, United States
Othercharbon (Hg)
- Type
- Coal deposit (low volatile bituminous coal, Pennsylvanian)
Low volatile bituminous coal seam of Pennsylvanian age, calorific content of 14,967 Btu; sample PSOC 769 of the DOE Coal Sample Bank (Pennsylvania State University), homogenised and packed under argon; mercury with a mean δ202Hg of -1.49 ‰ and Δ201Hg of -0.10 ‰ (Biswas et al., 2008). Coordinates not given.
δ202Hg in ‰ (per mil) Values of the same system
Standard : NIST SRM 3133
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −1.49 ± 0.16 ‰ | −1.6 / −1.37 ‰ | 2 | coal (low volatile bituminous coal) Mean and standard deviation recalculated from 2 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -1.60 ± 0.17 ‰ (2SD 3 analyses); -1.37 ± 0.15 ‰ (2SD 3 analyses); 6 analyses in total. | 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 |
|---|---|---|---|---|
| −0.1 ± 0.01 ‰ | −0.1 / −0.09 ‰ | 2 | coal (low volatile bituminous coal) Mean and standard deviation recalculated from 2 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -0.09 ± 0.02 ‰ (2SD 3 analyses); -0.10 ± 0.01 ‰ (2SD 3 analyses); 6 analyses in total. | 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 |
|---|---|---|---|---|
| −0.1 ± 0.01 ‰ | −0.1 / −0.09 ‰ | 2 | coal (low volatile bituminous coal) Mean and standard deviation recalculated from 2 subsamples, the standard deviation reflects deposit heterogeneity; subsamples combusted separately: -0.09 ± 0.01 ‰ (2SD 3 analyses); -0.10 ± 0.03 ‰ (2SD 3 analyses); 6 analyses in total. | Biswas et al. (2008), Natural mercury isotope variation in coal deposits and organic soil… |
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Cite this page
IsoFind Atlas (2026). Lower Philpot seam (Arkansas), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/couche-lower-philpot-arkansas/ (accessed 2026-10-15).
@misc{isofind2026lowerphilpotseamarkansasisoto,
title = {Lower Philpot seam (Arkansas), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/couche-lower-philpot-arkansas/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15