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North American Niobium Adds to Québec Niobium and Rare Earths Holdings

North American Niobium Adds to Québec Niobium and Rare Earths

Holdings

The Miskam Project is just west of the Sabot Project, in a similar geological environment

Vancouver, British Columbia – March 12, 2026 – North America Niobium and Critical Minerals

Corp. (CSE: NIOB) (FSE: IOR) (OTCQB: NIOMF) (“North American Niobium” or the

“Company”) is pleased to announce that it continues to increase its exposure to alkaline intrusive settings

associated with niobium and rare earth element ge ochemical anomalies identified by government datasets

from the Government of Québec. This is in keeping with North American Niobium’s strategic focus on

identifying alkaline systems capable of producing niobium-rare earth element mineralization

The Company has staked approximately 4,222 hectares consisting of 73 mineral claims 45 km northwest

of La Tuque, Québec (“Miskam”). Transfers of 21 of the 73 mineral claims remain pending approval. The

property is approximately 2 km west of Sabot and shares a similar geological setting. Highly anomalous

bottom lake sediments and rock s samples collected by the govern ment on Miskam align with mapped

syenitic intrusions and favourable host rocks (see Figure 1), supporting a silicate-alkaline exploration model

for niobium-rare earth element mineralization.

“We saw an opportunity to secure this land package based on intriguing signs in a favourable geological

environment, with nearby prospects that support our targeting concept,” said Murray Nye, Chief Executive

Officer. “Our technical team believes the acquisition made sense, so we moved to purchase the claims. The

geological setting we’re targeting is consistent with alkaline intrusive environments that can host niobium–

rare earth elements mineralization. Importantly, we expect the permitting pathway and stakeholder

engagement approach for this area to be consistent with our established Québec process, which we believe

will help streamline near-term planning.”

Highlights

 Acquired 73 mineral claims over 4,222 hectares in the La Tuque area, expanding the Company’s footprint

within the Grenville Province

 Targeting niobium-rare earth elements potential in an alkaline system supported by Québec government

data, including SIGÉOM and PRO 2009-03 (Labbé, 2009) bottom-lake sediment geochemistry

 Highly anomalous (approx. 99th pe rcentile) niobium-lanthanum-yttrium geochemical responses in the

area stand out within the referenced dataset and are considered prospective in the context of alkaline

niobium-rare earth elements systems in Québec

 Mapped syenitic intrusions near potentially silica -rich metasediments (e.g., quartzites and other

metasedimentary units) are consistent with an alka line silicate niobium–rare earth elements exploration

model

 Next steps include field validation and sampling to refine targets and prioritize follow-up work

Strategic Rationale and Exploration Model

The Company is focused on identifying alkaline systems capable of producing niobium-rare earth element

mineralization. This concept draws on the explora tion framework described by Beard et al (2022), and

includes:

 A typically oval alkaline intrusive complex can provide several pathways to concentrate niobium and

rare earth elements such as:

o near-surface and contact zones where alkaline melts and late-stage fluids react with silica-rich host

rocks, potentially creating mineralized breccias, xenoliths and sheeted syenite bodies

o mineralization within the intrusion where the magma becomes layered and progressively more evolved

o late-stage, highly evolved intrusive phases (central/apical plugs, sheets and dikes, and related pegmatite

or hydrothermal zones) where rare earths and other critical elements may be concentrated as the system

cools and differentiates

 carbonatite-associated niobium-rare earth element systems.

The Company has reviewed Québec government bottom-lake sedi ment geochemistry available through

SIGÉOM, including information reported in PRO 2 009-03 (Labbé, 2009). The dataset includes 11,719

sample locations within the Company’s area of interest.

A cluster of anomalous bottom-lake sediment in ni obium, lanthanum, and yttrium has been identified

occurring directly over, and immediately adjacent to, a mapped alkaline intrusive oval-shaped body

interpreted to be at least 7x10 km . The anomalous response appears to be strongest near the interpreted

intrusion and extends outward into adjacent metasedi mentary units of the Wabash Complex. Two rock

samples collected by government geologists also returned elevated total rare earth element values, grading

713.9 ppm and 785.67 ppm.

Taken together, this spatial association between the bottom-lake sediment anomaly pattern, the interpreted

alkaline intrusive body, and favourable host rocks makes for a compelling, early-stage niobium-rare earths

target on the property.

Figure 1 below presents the Compan y’s current compilation, including the mapped alkaline intrusion

outline and the anomalous bottom-lake sediment responses at Miskam.

Figure 1: The Miskam Project shows a strong niobum, lanthanum, and yttrium anomaly up to 99th percentile. It is strongest within

the intrusion and near its southern contact with the paragnei ss metasediments of the Wabash Complex, which are commonly

associated with silica-rich sediments such as quartzites and cherts.

Note: The technical rationale described herein is inte rpretive and early stage and is based primarily on

public-domain government mapping and geochemical datasets and the presence of regional mineral

occurrences. These indications do not confirm the presence of mineralization on the Property, and there has

been insufficient exploration on the Property to define a mineral resource.

Selected references:

 Labbé, J.-Y. (2009). Nouvelles données géochimiques de sédiments de fond de lac dans la partie

occidentale du Grenville québécois : secteurs de Va l-d’Or, Chibougamau et La Tuque. Ministère des

Ressources naturelles et de la Faune (Québec), PRO 2009-03, 8 p. (Available through SIGÉOM).

 Beard, C.D., Goodenough, K.M., Borst, A.M., Wall, F., Siegfried, P.R., Deady, E.A., Pohl, C., Hutchison,

W., Finch, A.A., Walter, B.F., Elliott, H.A.L., & Brauch, K. (2022). Alkaline-silicate REE-HFSE systems.

Economic Geology, 118(1), 177–208. doi:10.5382/econgeo.4956.

Qualified Person

The scientific and technical information contained in this news release has been prepared in accordance

with National Instrument 43-101 – Standards of Disclosure for Mineral Projects (NI 43-101). Clyde

McMillan, P.Geo., a consultant to the Company a nd a Qualified Person as defined under NI 43-101, has

reviewed and approved the technical information contained herein.

ABOUT NORTH AMERICAN NIOBIUM AND CRITICAL MINERALS CORP.

North American Niobium and Critical Minerals Corp. (CSE: NIOB | OTCQB: NIOMF | FSE:KS82.F)

is a North American mineral exploration compa ny focused on the acquisition and development of

precious, base, and critical mineral assets. Its portf olio includes the Silver Lake property in British

Columbia’s Omineca Mining Divi sion and a recently acquired land package in Quebec’s Grenville

Province. The Québec properties add exposure to rare earth elements, niobium, and nickel-copper

occurrences, expanding the Company’s footprint into critical minerals that are strategically important for

nergy and defense applications.

ON BEHALF OF THE BOARD OF DIRECTORS:

Murray Nye

Chief Executive Officer

[email protected]

+1 (647) 984-4204

FORWARD LOOKING STATEMENTS

This news release contains “forward-looking statements” within the meaning of applicab le Canadian securities legislation. All s tatements in this

release, other than statements of historical fact, that addre ss events, results, outcomes or developments that the Company expe cts, anticipates or

intends to occur in the future, or that otherwise reflect manage ment’s expectations or beliefs about future events, are forward -looking statements.

Forward-looking statements are generally, but not always, identified by the use of word s and phrases such as “expects,” “plans, ” “anticipates,”

“believes,” “intends,” “estimates,” “projects,” “potential,” “opportunity,” “strategy,” “target,” “forecast” and similar expressions, or statements that

events, conditions or results “will,” “would,” “may,” “could,” or “should” occur or be achieved.

Forward-looking statements in this release include, but are not limited to: (i) statements regarding the Properties and their m ineral prospectivity;

(ii) the Company’s planned exploration, development and evaluation activities on the Properties; and (iii) the potential for th e Grenville Province

to host significant rare earth element, niobium, nickel-copper or other critical mineral deposits. Such forward-looking stateme nts are based on the

Company’s current plans, intentions, exp ectations and beliefs and are subject to certain assumptions, including, without limita tion, assumptions

that exploration results will continue to support the prospectivity of the Properties.

Although the Company believes the expectations expressed in such forward-looking statements are reasonable, such statements are not guarantees

of future performance or outcomes and actual results may differ ma terially from those expressed or implied in the forward-looki ng statements.

Factors that could cause actual results to differ materially from those anticipated include, but are not limited to: the timing and receipt of required

regulatory approvals; changes in commodity prices and market conditions; the availa bility of capital and financing on acceptabl e terms; general

economic, business and political conditions; risks inherent in mi neral exploration a nd development, incl uding operational risks , geological

uncertainties, environmental risks and accidents; changes in government regulation or policy; and the speculative nature of mineral exploration and

development. Additional information regarding risks and uncertainties faced by the Company is available in the Company’s public disclosure record

on SEDAR+ (www.sedarplus.ca).

Readers are cautioned that forward-looking statements are not guarantees of future performance, and undue reliance should not be placed on them.

The forward-looking statements contained in this release are made as of the date hereof and are based on information currently available and

management’s beliefs, estimates, expectations and opinions at that time. Except as required by applicable securities laws, the Company undertakes

no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

The Canadian Securities Exchange does not accept responsibility fo r the adequacy or accuracy of this release and has neither ap proved nor

disapproved the contents of this press release