Lac Herbin

Val-d'Or, Quebec (Abitibi greenstone belt), Canada

Orogenic goldAu

Type: Orogenic gold in quartz-tourmaline-carbonate veins in the Bourlamaque pluton

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. Mine closed in 2016 in the centre of the dioritic to tonalitic Bourlamaque pluton (170 km²); 1 to 3.5 m veins in E-W shear zones, cut by dioritic dykes.

δ11B in ‰ (per mil) Values of the same system

Standard : NIST SRM 951

Value	Range	n	Mineral or matrix	Source
−8.5 ± 0.4 ‰	−9.3 / −7.7 ‰	21	tourmaline from veinlets in a quartz vein (sample 73, level 15) Mean and standard deviation recalculated from 21 analyses, -9.3 to -7.7 (1 -8.5; 2 -8.0; 3 -8.0; 4 -8.5; 5 -9.3; 6 -8.5; 7 -8.6; 8 -8.6; 9 -7.9; 10 -9.0; 11 -7.7; 12 -8.6; 13 -8.4; 14 -8.4; 15 -9.0; 16 -8.8; 17 -8.2; 18 -8.4; 19 -8.6; 20 -9.2; 21 -8.5). Published mean -8.5 ± 0.4 ‰. Heaviest values of the district; the table labels this sample "LacHerbin".	Daver et al. (2020), Three-stage formation of greenstone-hosted orogenic gold deposits in…

Deposits of the same type

Cite this page

IsoFind Atlas (2026). Lac Herbin, isotope signatures. https://www.isofind.tech/isotopes/en/deposits/lac-herbin/ (accessed 2026-10-20).

@misc{isofind2026lacherbinisotopesignatures,
  title = {Lac Herbin, isotope signatures},
  author = {{IsoFind Atlas}},
  year = {2026},
  url = {https://www.isofind.tech/isotopes/en/deposits/lac-herbin/},
  note = {Accessed 2026-10-20}
}

Updated : 2026-10-20