Parallel zone (Lamaque)
Val-d'Or, Quebec (Abitibi greenstone belt), Canada
Orogenic goldAu
- Type
- Orogenic gold in quartz-tourmaline-carbonate veins in a dioritic intrusion
Mine of the Val-d'Or vein field: quartz-tourmaline-carbonate (QTC) veins in shear zones. Daver et al. (2020): three-phase paragenesis, early gold and pyrite under reducing conditions, tourmaline and barite under an oxidizing fluid, then barren As-Co-Ni cubic pyrite; district tourmaline δ11B from -15.6 to -7.7 ‰, lighter to the west, mixing of a deep metamorphic fluid and a supracrustal fluid. Exploration project 500 m from the Lamaque deposit and 2 km from the Triangle zone; veins in an 800 by 400 m dioritic intrusion in Val-d'Or Formation andesite.
δ11B in ‰ (per mil) Values of the same system
Standard : NIST SRM 951
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| −12.5 ± 0.7 ‰ | −14 / −11.6 ‰ | 8 | quartz-tourmaline vein tourmaline with disseminated pyrite (sample 88, drill core, 212 m) Mean and standard deviation recalculated from 8 analyses, -14.0 to -11.6 (1 -12.6; 2 -12.5; 3 -14.0; 4 -11.6; 5 -12.7; 6 -12.5; 7 -11.8; 8 -12.6). Published mean -12.5 ± 0.6 ‰. | Daver et al. (2020), Three-stage formation of greenstone-hosted orogenic gold deposits in… |
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Cite this page
IsoFind Atlas (2026). Parallel zone (Lamaque), isotope signatures. https://www.isofind.tech/isotopes/en/deposits/zone-parallel-lamaque/ (accessed 2026-10-20).
@misc{isofind2026parallelzonelamaqueisotopesig,
title = {Parallel zone (Lamaque), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/deposits/zone-parallel-lamaque/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20