Big Dirty seam (Washington)
Washington, Pacific Province, United States
Othercharbon (Hg)
- Type
- Coal deposit (subbituminous B coal, Eocene)
Subbituminous B coal seam of Eocene age, calorific content of 9,952 Btu; sample PSOC 240 of the DOE Coal Sample Bank (Pennsylvania State University), homogenised and packed under argon; mercury with a mean δ202Hg of -0.88 ‰ and Δ201Hg of -0.35 ‰ (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 |
|---|---|---|---|---|
| −0.88 ± 0.15 ‰ | 1 | coal (subbituminous B coal) Single subsample; uncertainty = 2SD of 3 replicate analyses. | 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 ± 0.07 ‰ | 1 | coal (subbituminous B coal) Single subsample; uncertainty = 2SD of 3 replicate analyses. | 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 |
|---|---|---|---|---|
| −0.34 ± 0.04 ‰ | 1 | coal (subbituminous B coal) Single subsample; uncertainty = 2SD of 3 replicate analyses. | Biswas et al. (2008), Natural mercury isotope variation in coal deposits and organic soil… |
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Cite this page
IsoFind Atlas (2026). Big Dirty seam (Washington), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/couche-big-dirty-washington/ (accessed 2026-10-15).
@misc{isofind2026bigdirtyseamwashingtonisotope,
title = {Big Dirty seam (Washington), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/couche-big-dirty-washington/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15