Volta Metals Ltd. announced the results of an updated Mineral Resource Estimate ("MRE") for its Springer Rare Earth Element deposit ("Deposit" or "Springer") with an effective date of December 31, 2025. The Deposit is located near the town of Sturgeon Falls, approximately one hour east of Sudbury, Ontario along the Trans-Canada Highway. Mineral Resource Estimate Review Webinar.
Volta Metals will be hosting a webinar to discuss the results of the Springer REE Project Mineral Resource, during which members of the Volta Metals' leadership team will be on the call. Participants will be able to submit questions or email them in advance to . Details.
SLR Consulting (Canada) Inc. (" SLR") estimated the Springer Project Mineral Resources using drilling and assay data available as of October 29, 2025. The Springer deposit MRE is based on a CAD 43/t net metal revenue ("NMR", or "Net Value") cut-off. Totals may not add or multiply accurately due to rounding.
The Mineral Resource estimation was based on 26 drill holes totaling 7,721m of drilling, 4,429 assays, and 532 density samples. Two wireframes were modelled in Leapfrog Geo using an indicator grade shell at a nominal NMR value of CAD 220 to separate a High Grade (HG) core from a Low Grade (LG) domain. Mineral Resource classification is based on the sample spacing as well as the Qualified Person's level of confidence in the geological knowledge and input information.
Indicated Mineral Resources were constrained by a nominal drill hole spacing of approximately 100m, and Inferred Mineral Resources by a nominal drill hole spacing the previous estimate for the Springer Property was effective May 4, 2012. Next Steps. With mineralization remaining open in all directions, and a fully funded 6,000-metre Phase-2 drill program underway, Springer is well positioned to continue demonstrating a strong growth profile to become one of the top rare earth deposits in North America with the potential to form an important component of North America's critical supply chain.
This MRE does not include the historical and/or more recent high-grade gallium assay results recently reported (January 26, 2026 and February 11, 2026) from the Fall 2025 drill program. Additional gallium results from this drilling are forthcoming. Proximity to Existing Infrastructure.
The deposit location provides excellent access to infrastructure, as the site is accessible via Highway 64, which connects Sturgeon Falls and Field, Ontario. Proximity to highways, the Crystal Falls and Sturgeon Falls hydroelectric dams, hydroelectric power lines, a natural gas pipeline, and the Canadian National Railway line further enhance the project's logistical advantages. Sudbury is the most populous city in Northern Ontario, with a population of around 180,000, and serves as a regional hub, supporting the predominantly mining industry.
It is the only single-tier municipality in Northern Ontario, the largest city in Ontario by area and the fifth largest in Canada. It offers a skilled workforce and essential services. Daily commercial air services offer daily flights across Ontario and major Quebec cities.
Sturgeon Falls can be accessed by road and rail from both North Bay and Sudbury, as well as Southern Ontario, including Toronto. The varied terrain provides opportunities to minimize earthwork requirements and facilitates the development of a water management plan which maintains natural drainage patterns. The Mineral Resources disclosed in this news release have been estimated by Ms. Katharine Masun, M.Sc., MSA, P.Geo., Principal Resource Geologist with SLR Consulting (Canada) and SLR Consulting (Canada) Ltd. (Canada) Inc. (Canada) Inc. ("SLR) estimated the Springer Project Mineral Resources) Inc. ("SLR") estimated the Springer deposit MRE is based in all directions, and a CAD 43/t net metals revenue ("NMR", or 'Net Value") cut-off".
