Billiken Lode (Critchell area)
Colorado, Jefferson County (Front Range), United States
UraniumU
- Type
- Uranium veins in Precambrian metasediments
Uranium veins in folded and faulted Precambrian metasediments, ore dated at 69 ± 1.1 Ma (U-Pb, Laramide). 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. Coordinates from the MRDS record of the Black Knight mine (Billikins lodes), likely but unconfirmed match.
87Sr/86Sr isotope ratio, no unit Values of the same system
Standard : NIST SRM 987
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 0.75265 ± 0.000018 | 1 | vein uraninite in metasediments Single analysis; value read from the Figure 7 label, 2σ uncertainty. | Balboni et al. (2016), Chemical and Sr isotopic characterization of North America uranium… |
Deposits of the same type
- Marshall Pass district United States
- Happy Jack Mine (White Canyon) United States
- Skyline Mine (Monument Valley) United States
- Cameron district (uraniferous petrified wood) United States
- Orphan Lode (Grand Canyon) United States
- Key Lake (Deilmann and Gaertner) Canada
- McArthur River (Athabasca) Canada
- Athabasca basin (unconformity uranium province) Canada
Cite this page
IsoFind Atlas (2026). Billiken Lode (Critchell area), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/billiken-lode-secteur-de-critchell/ (accessed 2026-10-15).
@misc{isofind2026billikenlodecritchellareaisot,
title = {Billiken Lode (Critchell area), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/billiken-lode-secteur-de-critchell/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15