Schlema-Alberoda
Saxony, western Erzgebirge, Germany
UraniumU (Co-Ni-Bi-Ag)
- Type
- Hydrothermal uranium veins (pitchblende)
Large vein deposit of the Erzgebirge: pitchblende of the quartz-calcite assemblage at 270 ± 3 Ma and of the dolomite-pitchblende assemblage at 155 ± 3 Ma, late coffinite; coffinite 0.31 ‰ lighter than the pitchblende it overgrows, total internal variation of 0.33 ‰ (Chernyshev et al., 2014). Indicative coordinates (Bad Schlema).
238U/235U isotope ratio, no unit Values of the same system
Standard : NBL CRM 112-A
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 137.8195 ± 0.00212 | 137.818 / 137.821 | 2 | pitchblende of the quartz-calcite-pitchblende assemblage, 270 Ma (1224) Mean and standard deviation recalculated from 2 analyses, first and last growth zones; equivalent δ238U -0.14 to -0.12 ‰. | Chernyshev et al. (2014), 238U/235U isotope ratio variations in minerals from hydrotherma… |
| 137.80967 ± 0.00814 | 137.804 / 137.819 | 3 | pitchblende of the dolomite-pitchblende assemblage, 155 Ma (3696, 3211, XVI) Mean and standard deviation recalculated from 3 analyses, equivalent δ238U -0.24 to -0.13 ‰. | Chernyshev et al. (2014), 238U/235U isotope ratio variations in minerals from hydrotherma… |
| 137.776 ± 0.01 | 1 | coffinite overgrowing pitchblende (3696) Single analysis; equivalent δ238U -0.44 ‰. | Chernyshev et al. (2014), 238U/235U isotope ratio variations in minerals from hydrotherma… |
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Cite this page
IsoFind Atlas (2026). Schlema-Alberoda, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/schlema-alberoda/ (accessed 2026-10-15).
@misc{isofind2026schlemaalberodaisotopesignatu,
title = {Schlema-Alberoda, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/schlema-alberoda/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15