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    NioBay’s Crevier niobium-tantalum project: economics and design notes for mine planners

    October 8, 2026|

    Reviewed by Joe Ashwell

    NioBay’s Crevier niobium-tantalum project: economics and design notes for mine planners

    First reported on MINING.com

    30 Second Briefing

    NioBay Metals is seeking strategic and offtake partners, including major miners and defence clients, to fund a prefeasibility study and environmental work for its Crevier niobium-tantalum open-pit project in Quebec, targeting first production in the early 2030s. The February 2026 resource outlines 23.7 million measured and indicated tonnes at 0.17% Nb and 202 ppm Ta plus 12.8 million inferred tonnes at 0.12% Nb and 131 ppm Ta, with a 20-year mine plan and projected annual revenue of C$118–C$110 million against C$55–C$80 million in operating costs. A 10,000-metre drilling campaign, high-purity metallurgical test results and a C$500,000 Quebec grant to optimise hydrometallurgical processing aim to lift resources by at least 25% and strengthen economics for what could be North America’s only niobium-tantalum oxide mine, backed by the Pekuakamiulnuatsh First Nation.

    Technical Brief

    • Open-pit scenario targets 35,200 t Nb and 4,200 t Ta contained in measured + indicated.
    • Inferred inventory adds 15,300 t Nb and 1,700 t Ta, supporting potential mine-life extensions.
    • Site lies ~450 km north of Montreal in the Lac Saint-Jean region, affecting logistics and power options.
    • Metallurgical testwork has already produced high-purity niobium and tantalum oxides, de-risking downstream processing design.
    • C$500,000 Quebec grant is earmarked specifically to optimise hydrometallurgical flowsheets for Nb-Ta recovery.
    • NioBay’s strategy is to offset low head grades with high-volume mining, leveraging large low-grade inventories.
    • A 2023 tantalum-rich discovery north of the main zone could materially improve by-product credits and cut unit costs.
    • Cooperation agreement with the Pekuakamiulnuatsh First Nation (2023) underpins permitting and potential equity participation structures.

    Our Take

    Within our 1266 Mining stories, niobium and tantalum appear in only 11 keyword-matched pieces, so Crevier positions NioBay in a relatively uncrowded critical-minerals space compared with gold or base metals in Quebec.

    The envisioned 20-year life and relatively modest annual revenue range at Crevier suggest it will likely appeal more to strategic offtakers or downstream users of niobium–tantalum than to majors seeking large-scale standalone cash engines.

    With measured and indicated grades of 0.17% niobium and 202 ppm tantalum, Crevier sits in the lower- to mid-grade band of hard-rock niobium–tantalum projects in our database, which increases the importance of low-cost logistics from Lac Saint-Jean and disciplined operating costs to stay competitive.

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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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