Quantum Completes Second Airborne Survey at NMX East Project in Quebec

(TheNewswire)

Initial Airborne Survey Confirms Magnetic Anomaly Similar to Nisk Deposit

Vancouver, BC TheNewswire - October 2, 2025 Quantum Critical Metals Corp. (TSX.V: LEAP | OTCQB: ATOXF | FSE: 86A1) (" Quantum " or the " Company ") is pleased to announce that, further to the news of September 22 nd 2025 the Company has successfully completed a MAG-TDEM (magnetic-time domain electromagnetic) a irborne survey on its wholly owned NMX East Property in Northern Québec.

During September, Quantum completed two airborne surveys at NMX East:

1. an electro magnetic (" EM ") very low frequency electromagnetic (" VLF ") and magnetic geophysical survey to validate historical government data and enhance geological targeting; followed by

2. a MAG-TDEM airborne survey to obtain additional high-resolution data to allow a better definition of EM anomalies for improved design of drill targets aimed at Ni-PGE mineralization, similar to that of neighbouring Power Metallic Mines (TSX-PNPN).

The magnetic anomaly from the first airborne survey prompted Quantum to undergo an immediate follow up investigation, requiring a second airborne survey. The second TDEM system survey detected good quality bedrock conductors at greater depth than was previously possible with the VLF-EM technology.

Nickel and PGE are commonly searched for with airborne and magnetic surveys to help locate the rock types of interest ( Vallée et al . 2024). The NMX East Property is located in a James Bay region of Québec which has a known source of lithium, nickel and platinum group elements (" PGE ").

The map below was generated during the first round of geophysics and confirms a magnetic anomaly on Quantum's NMX East Property which is similar in amplitude, strike, shape and size, to the anomaly found at the Nisk deposit (Figure 1), based on public results from another MAG-TDEM survey performed over Nisk (Dubé, 2023).

Next Steps: Drill Permits

Quantum is in the midst of planning detailed drill targets for the NMX East and intends to apply for drill permits in the upcoming weeks.

CEO Marcy Kiesman stated:

"It is encouraging for shareholders that a magnetic anomaly on the NMX East Property is similar in amplitude, strike, shape and size to the anomaly found at the neighbouring Nisk deposit. With the significant amount of activity undertaken in the surrounding James Bay area this season, we look forward to continuing to provide our shareholders with further updates in the weeks and months to come."

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References

Dubé, J. (2023). Technical Report, Heliborne Magnetic and TDEM Survey, Nisk Project .  Québec MERN Sigeom reference GM73789. https://gq.mines.gouv.qc.ca/documents/EXAMINE/GM73786/GM73786RAP001.pdf

Vallée, M. A., Moussaoui, M., & Khan, K. (2024). Case Studies of Magnetic and Electromagnetic Techniques Covering the Last Fifteen Years . Minerals, 14 (12), 1286. https://doi.org/10.3390/min14121286

Qualified Person

Joël Dubé, P.Eng., an independent professional of Dynamic Discovery Geoscience consulting for the Company, is the Qualified Person who has reviewed and approved the scientific and technical disclosure in this news release .

About Quantum Critical Metals Corp.

Quantum Critical Metals Corp. (TSX.V: LEAP) (OTCQB: ATOXF) (FSE: 86A1) is a Canadian mineral exploration company focused on advancing critical metals projects that power next-generation technologies. With a growing portfolio of promising assets—including the NMX East Gallium-Rubidium-Cesium Project in Québec, the Discovery Gallium-Rubidium-Cesium and polymetallic project in Qu é bec, the Victory Antimony Project in British Columbia, and the newly acquired Prophecy Germanium-Gallium-Zinc Project in British Columbia, among others, the Company is strategically positioned to support the West's transition to a secure and sustainable critical metals supply.

To stay updated on Quantum's latest developments, sign up for our mailing list and visit www.quantumcriticalmetals.com and www.sedarplus.com .

Marcy Kiesman, CEO

Telephone: 604.428.2900 or 604.339.2243

Email: marcykiesman@qcriticalmetal.com

Website: www.quantumcriticalmetals.com

Forward-Looking Statements

This news release contains "forward‐looking information or statements" within the meaning of applicable securities laws, which may include, without limitation, statements that address the upcoming work programs, and other statements relating to the business, financial and technical prospects of the Company. All statements in this news release, other than statements of historical facts that address events or developments that the Company expects to occur, are forward-looking statements. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results may differ materially from those in the forward-looking statements.

Such forward-looking information reflects the Company's views with respect to future events and is subject to risks, uncertainties and assumptions, including those filed under the Company's profile on SEDAR at www.sedarplus.com . Factors that could cause actual results to differ materially from those in forward-looking statements include, but are not limited to, continued availability of capital and financing and general economic, market or business conditions. The Company does not undertake to update forward‐looking statements or forward‐looking information, except as required by law.

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