Happy Jack Mine (White Canyon)
Utah, San Juan County, White Canyon district, United States
UraniumU (Cu)
- Type
- Tabular sandstone-hosted uranium (Colorado Plateau)
Tabular deposit in the fossil-wood-bearing Mesozoic fluvial sediments of the Colorado Plateau (three events: Late Triassic-Early Jurassic, Late Jurassic, Early Cretaceous); uraninite unusually REE-rich (about 0.5 %) for a low-temperature deposit. Uraninite 87Sr/86Sr measured by Balboni et al. (2016) for nuclear forensics: low ratios (below 0.7200) in low-temperature sandstone deposits, high in pegmatites, veins and breccia pipes. Indicative coordinates (White Canyon district, Fry Canyon area).
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.7175 ± 0.000009 | 1 | sandstone uraninite Single analysis; value read from the Figure 7 label, 2σ uncertainty; the text gives 0.71933 for Happy Jack and 0.71750 for Cameron, the reverse of the figure. | Balboni et al. (2016), Chemical and Sr isotopic characterization of North America uranium… |
Deposits of the same type
- Skyline Mine (Monument Valley) United States
- Cameron district (uraniferous petrified wood) United States
- Orphan Lode (Grand Canyon) United States
- Marshall Pass district United States
- Billiken Lode (Critchell area) United States
- Key Lake (Deilmann and Gaertner) Canada
- Shea Creek (Athabasca) Canada
- McArthur River (Athabasca) Canada
Cite this page
IsoFind Atlas (2026). Happy Jack Mine (White Canyon), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/happy-jack-mine-white-canyon/ (accessed 2026-10-15).
@misc{isofind2026happyjackminewhitecanyonisoto,
title = {Happy Jack Mine (White Canyon), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/happy-jack-mine-white-canyon/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15