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    NioCorp’s Elk Creek critical minerals project: $4B study insights for mine planners

    August 12, 2026|

    Reviewed by Tom Sullivan

    NioCorp’s Elk Creek critical minerals project: $4B study insights for mine planners

    First reported on MINING.com

    30 Second Briefing

    Updated feasibility results for NioCorp’s Elk Creek critical minerals project in Nebraska put the 40‑year integrated mine‑to‑processing operation at a pre‑tax NPV8 of $4.1 billion and after‑tax NPV8 of $3.4 billion, with a pre‑tax IRR of 24% and after‑tax IRR of 22.8%. The study forecasts life‑of‑mine revenue of $37.4 billion, averaging $608 million in annual EBITDA and $519 million in operating cash flow. Elk Creek is planned to produce eight US‑designated critical mineral products, including ferroniobium, scandium trioxide, titanium tetrachloride and multiple rare earth oxides, with major construction permits already secured.

    Technical Brief

    • Integrated flowsheet targets eight critical-mineral products from a single Elk Creek orebody in Nebraska.
    • Product suite includes ferroniobium, scandium trioxide and titanium tetrachloride as separate saleable streams.
    • Rare earth outputs specified as Nd-Pr oxide, Dy oxide, Tb oxide, Sm-Eu-Gd carbonate and heavy RE carbonate.
    • All planned outputs correspond to US-designated critical minerals, aligning with defence and advanced manufacturing demand.
    • Major construction-related permits are already secured, reducing schedule risk for mine and processing plant build-out.
    • Project is framed as a long-term domestic replacement for 100% imported supply of these eight products.
    • NioCorp trades on NASDAQ under ticker NB, with a reported market capitalisation of about $780.3 million.
    • Updated feasibility results were released 11 August 2026, providing the current economic and product-scope basis.

    Our Take

    The earlier non‑binding offtake and marketing deal with Traxys for Elk Creek output suggests NioCorp is already de‑risking revenue for its ferroniobium and rare earth oxide streams, which helps support the relatively high IRR figures in the updated feasibility study.

    The presence of USA Rare Earth in both this piece and recent coverage of US‑linked rare earth financing and corporate deals signals a tightening network of US‑aligned rare earth developers, where Elk Creek’s neodymium‑praseodymium and heavy rare earth carbonate outputs could become strategically important feed for downstream magnet and separation capacity.

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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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