Hart deposit (Abitibi)
Ontario (Late Archaean Abitibi greenstone belt), Canada
Magmatic (Ni-Cu-PGE, carbonatites)Ni-Cu
- Type
- Komatiite-associated magmatic Ni-Cu sulfide
A magmatic Ni-Cu sulfide deposit associated with komatiitic lavas of the Archaean Abitibi belt (2.7 Ga). This komatiite-hosted type differs from intrusion-hosted deposits (Norilsk, Jinchuan, Voisey's Bay). It is modest in size but has a remarkable isotopic signature.
δ60Ni in ‰ (per mil) Values of the same system
Standard : NIST SRM 986
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −0.49 / 0.14 ‰ | barren komatiite (no sulfides) Barren komatiite, without sulfides, with heavier δ60Ni than the mineralised samples. A reference for the undisturbed silicate host. | Hiebert et al. 2022, Nickel isotope fractionation in komatiites and associated sulfides i… | ||
| −1.06 / 0.11 ‰ | sulfide-bearing rocks (Ni-Cu mineralisation) Mineralised rocks always have lighter δ60Ni than barren komatiites, in line with the model of fractionation by fractional crystallisation of the sulfide liquid (predicted range +0.17 to -1.02 ‰). Sulfide-rich samples contain 8,380 to 39,300 ppm nickel. | Hiebert et al. 2022, Chemical Geology |
Deposits of the same type
- Sudbury Canada
- Voisey's Bay Canada
- Stillwater Complex (J-M Reef) United States
- Pechenga Russia
- Rössing Namibia
- Great Dyke (Main Sulfide Zone) Zimbabwe
- Bushveld, Merensky Reef South Africa
- Bushveld, UG2 chromitite South Africa
Cite this page
IsoFind Atlas (2026). Hart deposit (Abitibi), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/gisement-de-hart-abitibi/ (accessed 2026-10-06).
@misc{isofind2026hartdepositabitibiisotopesign,
title = {Hart deposit (Abitibi), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/gisement-de-hart-abitibi/},
note = {Accessed 2026-10-06}
}Updated : 2026-10-06