Faraday
Ontario, Bancroft area, Canada
UraniumU
- Type
- Intrusive uranium
Deposit of the high-temperature redox category in the study of uranium ore concentrates (yellowcake) from 40 mines. Uranium reduced at high temperature (igneous or metamorphic processes): clustered 238U/235U, indistinguishable from the non-redox conglomerates (common mean 137.833 ± 0.034, 2SD), and 235U/234U close to secular equilibrium (Brennecka et al., 2010). The Madawaska mine, at Faraday near Bancroft, was called the Faraday mine during its first operation (1954 to 1964, Faraday Uranium Mines) before reopening in 1976: the two concentrates come from the same deposit at two periods. Coordinates of the Madawaska mine, formerly Faraday mine, after Wikipedia.
238U/235U isotope ratio, no unit Values of the same system
Standard : CRM 129-A (rapport absolu, double traceur 236U-233U)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 137.837 ± 0.018 | 1 | uranium ore concentrate (yellowcake) Single analysis; high-temperature redox category; the Madawaska mine was called the Faraday mine from 1954 to 1964: the two concentrates come from the same deposit at two periods. | Brennecka et al. (2010), Natural variations in uranium isotope ratios of uranium ore conc… |
235U/234U isotope ratio, no unit Values of the same system
Standard : CRM 129-A (rapport absolu, double traceur 236U-233U)
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 132.71 ± 0.42 | 1 | uranium ore concentrate (yellowcake) Single analysis; high-temperature redox category. | Brennecka et al. (2010), Natural variations in uranium isotope ratios of uranium ore conc… |
Deposits of the same type
- Madawaska Canada
- Denison Canada
- Milliken Lake Canada
- Stanleigh Canada
- Stanrock Canada
- Billiken Lode (Critchell area) United States
- Marshall Pass district United States
- McArthur River (Athabasca) Canada
Cite this page
IsoFind Atlas (2026). Faraday, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/faraday/ (accessed 2026-10-15).
@misc{isofind2026faradayisotopesignatures,
title = {Faraday, isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/faraday/},
note = {Accessed 2026-10-15}
}Updated : 2026-10-15