PMET Resources (ASX:PMT): Tantalum Reshapes the Shaakichiuwaanaan Lithium Study

Aditi Sarkar

11 November 2026 10:52 PM AEDT

PMET Resources (ASX:PMT): Tantalum Reshapes the Shaakichiuwaanaan Lithium Study

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Highlights

The November 2026 updated CV5 feasibility study incorporates tantalum alongside lithium.
An underground-first design provides earlier access to the high-grade Nova Zone.
The study estimates lower average operating costs after anticipated tantalum credits.
A final Investment decision remains targeted for late 2027, contingent on approvals and funding.

PMET Resources Inc. (ASX:PMT) is developing the wholly owned Shaakichiuwaanaan lithium project in Quebec, Canada. Its updated November 2026 feasibility study changes the planned CV5 Mining sequence and includes tantalum concentrate as a secondary product. These are study outcomes rather than completed construction or a decision to proceed with a mine.

Tantalum Is Added to the CV5 Design

PMET Resources (ASX:PMT) has incorporated a tantalum recovery circuit into the updated CV5 feasibility study. The company estimates that co-product credits lower average life-of-mine cash operating costs by 19% to CAD 594 per tonne of spodumene concentrate, net of the anticipated tantalum credit. It also projects average all-in sustaining costs of CAD 657 per tonne on the stated cost basis.

Those costs are estimates derived from the study’s assumed grades, recoveries, throughput, inputs and product markets. They are not operating results from a producing mine. Tantalum adds an additional Revenue stream in the model, but the actual contribution would depend on commissioning performance, recovered quantities and commercial arrangements.

Underground-First Mining and Production Scale

The revised plan for PMET Resources (ASX:PMT) begins with underground access to the Nova Zone before expanding the combined mining and processing operation. Phase 1 proposes 2.2 million tonnes a year of processing capacity; a later expansion would lift combined capacity to 5.1 million tonnes annually. The overall study envisages approximately 20 years of production.

The proposed full-scale design includes potential output of up to 800,000 tonnes annually of SC5.5 spodumene concentrate. These levels depend on the mine and plant operating as designed. The staged approach is intended to bring higher-grade feed forward without committing the whole development at once, but it still entails major engineering and commissioning obligations.

Capital Costs and Technical Basis

PMET Resources (ASX:PMT) estimates initial development expenditure of CAD 1.391 billion and expansion Capital of CAD 672 million, before the specified credits. The underlying reserve is drawn from Indicated mineral resources at CV5 rather than speculative material. The company reported a Probable Mineral Reserve of 83.0 million tonnes at 1.27% lithium oxide and 148 parts per million tantalum pentoxide.

The total proposed capital commitment is substantial, and credits used in the economic model are conditional on eligibility and other assumptions. Engineering refinements, supplier quotations, Inflation and the cost of finance could affect the eventual expenditure. A feasibility study is a stronger technical basis than an early-stage assessment, but it does not remove execution risk.

Approvals and the Late-2027 Decision

PMET Resources (ASX:PMT) has not made a final investment decision. Its stated target remains late 2027, subject to obtaining the required authorisations and funding. The environmental and social impact assessment submitted in March 2026 remains under review. Engagement with affected Cree communities and provincial authorities forms part of the process.

Further work includes detailed engineering, bulk sampling and an assessment of a broader scenario encompassing lithium, caesium and tantalum. Those studies may refine future options, but they do not change the present status of the CV5 development. Financing, permitting and market conditions will ultimately influence the timing and scope of any construction approval.

Key Insights

PMET Resources (ASX:PMT) has presented a revised CV5 development case built around underground-first mining and tantalum credits. Estimated costs improve on the prior lithium-only design, while Capital Expenditure remains substantial. The proposed operation still requires permits, financing and a final decision before construction can proceed.

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