Talon scraps North Dakota mill for Tamarack: capex and schedule lens for mine planners
Reviewed by Tom Sullivan
First reported on MINING.com
30 Second Briefing
Talon Metals has abandoned plans for a new North Dakota mill for its Tamarack nickel-copper-cobalt project in Minnesota, opting instead to process ore at the existing Humboldt mill in Michigan acquired with the Eagle mine from Lundin Mining. The switch is expected to cut upfront capex, reduce financing needs and potentially accelerate Tamarack’s schedule, while Talon negotiates with the US Department of Energy over the future of a US$114.8 million award originally tied to the North Dakota plant. Technical upside continues, with hole 25TK0562A returning 13.37% Ni and 16.54% Cu from 753 m, the project’s longest sulphide intercept to date.
Technical Brief
- Tamarack resource (2022): 8.56 Mt indicated at 1.73% Ni, 0.92% Cu, 0.05% Co (326 Mlb Ni).
- Inferred resource: 8.46 Mt at 0.83% Ni, 0.55% Cu, 0.02% Co (154 Mlb Ni).
- Latest hole 25TK0562A intersected 13.37% Ni and 16.54% Cu with multi-PGE-Au credits from 753 m depth.
- Same intercept reports 0.10% Co, 7.85 g/t Pd, 14.49 g/t Pt and 8.56 g/t Au.
- Environmental review and permitting activities for Tamarack are already in progress ahead of construction decision.
- Talon currently owns 51% of Tamarack with an option to increase to 60%; Rio Tinto holds the balance.
- The cancelled North Dakota plant had been planned on a former coal-mining site in Mercer County.
Our Take
Talon’s Tamarack nickel-copper-cobalt resource, with 326 million lb contained nickel in indicated and 154 million lb in inferred, places it in the mid-tier of North American nickel stories in our database, where permitting and downstream processing choices often drive value more than headline tonnage.
The decision to abandon a North Dakota processing facility despite a US Department of Energy award of $114.8 million signals that even substantial public support may not offset timing, permitting or market-risk concerns for US critical minerals projects, an issue also surfacing in other cobalt and copper pieces in our recent coverage.
With Rio Tinto already embedded at Tamarack and simultaneously advancing copper and critical minerals growth options such as Winu and Aurukun in other regions, the shift in processing strategy here is likely to be weighed against its broader portfolio needs for US-sourced nickel and cobalt feed into future battery and energy-transition supply chains.
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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