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    Troilus gold in Quebec ‘waste’ rock: resource and strip-ratio lens for mine planners

    November 12, 2026|

    Reviewed by Joe Ashwell

    Troilus gold in Quebec ‘waste’ rock: resource and strip-ratio lens for mine planners

    First reported on MINING.com

    30 Second Briefing

    Troilus Mining has intersected new gold mineralisation in ground previously classified as waste at its Z87 hanging wall zone in Quebec, with hole 87-26-524 returning 34 metres at 1.29 g/t gold from 207 metres, including 12 metres at 3.04 g/t. The company is re-assaying untested historical core and infill around the proposed pit to model potential resource conversion, lower strip ratios and improve early mill feed for the planned 26-year open-pit operation. Troilus is targeting construction in 2027 with first ore in September 2029, backed by an $850 million debt commitment from KfW IPEX-Bank and Société Générale.

    Technical Brief

    • Hole 87-26-524 is located in the Z87 hanging wall, adjacent to the main ore zone.
    • Reported drill intercepts have estimated true thicknesses of 75%–90% of downhole lengths.
    • Newly drilled and re-assayed intervals are not yet included in the September 2026 resource and reserve update.
    • Troilus is systematically assaying previously untested historical core to close gaps in the geological model.
    • Infill and verification drilling focus on inferred material immediately around the proposed open-pit shell.
    • The redevelopment lies ~170 km north of Chibougamau and ~615 km north of Montreal, in a remote setting.
    • Initial capital for the 26-year mine life is estimated at about US$1.43 billion (C$2 billion).
    • Debt financing includes an $850 million credit-approved package from KfW IPEX-Bank and Société Générale, plus a contemplated $250 million from Export Development Canada.

    Our Take

    The envisaged 26-year life and US$1.43 billion initial capex put the Troilus copper-gold project at the upper end of Canadian single-asset builds in our database, which typically gives lenders like KfW IPEX-Bank and Société Générale strong leverage on ESG and offtake covenants during financing close.

    Finnvera’s earlier non-binding export credit indication tied to Metso’s process plant supply, alongside the current US$850 million debt commitment and contemplated Export Development Canada tranche, suggests Troilus Mining is structuring a heavily ECA-backed package that can de-risk procurement and schedule for a 2027 construction start.

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    Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.

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