Lamaque is an underground gold mine in Val-d’Or, Quebec.
Commercial production was declared on March 31, 2019.
100% – Eldorado Gold.
The Lamaque operation consists of the newly-discovered Triangle gold deposit located only 2.5km south of the historical world-class Lamaque and Sigma Mines, which are also on the property and produced over 10Moz of gold. The Triangle deposit is located in the Val d’Or mining camp, at the eastern end of the prolific Southern Abitibi Greenstone Belt. The deposit is an Archean greenstone-hosted orogenic lode gold deposit. Gold is found within quartz-tourmaline-carbonate veins, which are hosted within a series of sub-parallel sub-vertical shear zones centered around a steeply plunging cylinder-shaped porphyritic diorite (“The Triangle Plug”), which intrudes the mafic volcanic stratigraphy of the Val d’Or formation.
Individual gold bearing veins and associated alteration are on average 4-5m thick, sub-vertical and extend 500-700m horizontally and vertically and have a fully diluted average grade of approximately 7 g/t Au. To date, seven structures have been identified by drilling from surface to around 1,000m vertical depth. Secondary structures or splays from these principal shear zones can also host significant gold but are typically less extensive and more discontinuous. A recent deep drilling program has been successful in demonstrating the mineralized system extends to at least 2km below surface.
Longhole stoping; Longitudinal Retreat; Room-and-Pillar.
Gravity Separation; Agitated Tank Leaching; CIP; SX-EW.
2025 (as of 2018).
114 koz in 2019
$1,078/oz in 2019
Reserves / Resources (9/30/2019):
972 koz – P&P; 3,573 – MI&I