Porcupine (Timmins district)
Timmins, Ontario (Abitibi greenstone belt), Canada
Orogenic goldAu (W)
- Type
- Gold-scheelite quartz veins in a greenstone belt
Gold-scheelite quartz veins of the Abitibi belt (mineralisation about 2.69 to 2.58 Ga). Very unradiogenic lead of mantle or juvenile origin. Indicative coordinates.
206Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 13.631 | 1 | scheelite One analysis, Table 2. Measured ratios, not age-corrected: the author regards them as close to initial common lead. Sample PKP15 credited to the district as a whole. | Chiaradia (2003), The evolution of tungsten sources in crustal mineralization from Archea… |
207Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 14.536 | 1 | scheelite One analysis, Table 2. Measured ratios, not age-corrected: the author regards them as close to initial common lead. Sample PKP15 credited to the district as a whole. | Chiaradia (2003), The evolution of tungsten sources in crustal mineralization from Archea… |
208Pb/204Pb isotope ratio, no unit Values of the same system
Standard : NIST SRM 981
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 33.428 | 1 | scheelite One analysis, Table 2. Measured ratios, not age-corrected: the author regards them as close to initial common lead. Sample PKP15 credited to the district as a whole. | Chiaradia (2003), The evolution of tungsten sources in crustal mineralization from Archea… |
Deposits of the same type
- Hollinger Canada
- McIntyre Canada
- Coniaurum Canada
- Kirkland Lake (Macassa mine) Canada
- Siscoe Canada
- Sigma Canada
- Pascalis Canada
- Moose River Canada
Cite this page
IsoFind Atlas (2026). Porcupine (Timmins district), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/porcupine-district-de-timmins/ (accessed 2026-10-13).
@misc{isofind2026porcupinetimminsdistrictisoto,
title = {Porcupine (Timmins district), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/porcupine-district-de-timmins/},
note = {Accessed 2026-10-13}
}Updated : 2026-10-13