Highlights:

• Auriginal aims to make a new discovery with this 5,200 m drill program, testing for volcanogenic massive sulphide (VMS) mineralization above and to the south of the existing Rogers copper-gold resource.

• Drilling will also probe the depth continuation of the historical porphyry-hosted Cu-Au deposit at the 500-m vertical level.

• Borehole EM surveying to locate the center of gravity of the VMS mineralized system will be completed on new holes.

Toronto, Ontario--(Newsfile Corp. - March 25, 2026) - Auriginal Mining Corp. (TSXV: AUME) ("Auriginal" or the "Company") is pleased to announce that diamond drilling has commenced on the Roger property to test for extensions of the historical intrusive-hosted copper-gold (Cu-Au) mineralization and to confirm the new VMS mineralizing model applied to the property.

Drill Program Rationale

The Roger deposit has long been viewed as a porphyry-style Au-Cu system. Auriginal's reinterpretation, based on relogging, resampling, geochemistry, and age dating, suggests that the historical gold-copper deposit may sit below an overlying gold-rich volcanic massive sulphide (VMS) system.

A continuous, sulphide-bearing marker horizon has been traced for at least 1.5 km, hosted in altered felsic to intermediate volcanic rocks typical of VMS environments. Geochemical and geological signatures show strong similarities to Agnico Eagle's LaRonde 20N massive sulphide deposit, reinforcing the potential for a second, high-grade base-metal deposit at depth.

Roger Project Drill Program

Auriginal is planning a diamond drill program to intersect the gold-rich massive sulphide horizon, targeting downhole geophysical anomalies with the explicit objective of making a new VMS discovery south of the historical intrusive-hosted copper-gold system on the property. All required work, including securing necessary work permits and drill site preparation has been completed.

The drilling program includes:

• Minimum 5,200 m of diamond drilling of the Roger mineralized system.

• Testing conductive plates at the 500 m vertical level across 1.5 km of strike (see Figure 1).

• Completing downhole EM surveys in all new hole to tighten vectoring toward a VMS system.

This is the first focused drill campaign designed specifically to test this new VMS interpretation and the high-priority targets defined by borehole electromagnetic surveys (BHEM). Drilling will also test the deep continuation of the historical porphyry-style or intrusion-related Au-Cu deposit on the property, which is still open at depth.

• Figure 1 –  Location of Target Conductors Identified by the BHEM Survey, Roger Property, Quebec (Oblique Longitudinal Section, Looking East)

• Figure 2 – Longitudinal drill section showing current outline of the Roger Cu-Au Zone (in green): looking South

3D Resource Model Indicated Strong Potential for Expansion

A preliminary 3D model has been developed using the digital exploration database for the Roger project and rendered using Leapfrog^®. The intent of this exercise was to provide preliminary validation of the historical drillhole data for the property and to identify additional targets of opportunity that enhance the value proposition of the Roger.

The longitudinal section created from the data shows a significant thickening of the Roger mineralization (see Figure 2) believed to be the axis of an interpreted volcanic dome or cryptodome, the required heat source for a VMS mineralizing system. The most important basemetal sulphide intersections returned from historical drilling (see Kintavar Press Release – November 12, 2025) occur along the NE and SW flanks of the interpreted dome structure axis, in support of the VMS model develop for the property.

There is strong indication that the Roger porphyry mineralization remains open towards the NE and at depth. A strong Borehole EM (BHEM) was detected from our earlier survey work (see Press Release, November 12, 2025), believe to be related to massive basemetal sulphide mineralization has also been observed in that direction.

About Auriginal Mining Corp.

Auriginal is a Quebec-focused copper and gold company with one of the province's largest and most diversified exploration portfolios. Its 100%-owned flagship Roger Project, located in the Chibougamau district, hosts a known gold-copper deposit with strong potential to host volcanic-hosted polymetallic massive sulphide deposits. With a diversified pipeline of greenfield projects across Quebec's best-known mining regions and backed by the Ore Group's proven exploration and capital markets team Auriginal has a clear focus on discovery and growth for copper, zinc and gold. The company is well-positioned to immediately execute an aggressive exploration and acquisition strategy and attract broader market attention. Further details on Auriginal are available on the company website at https://auriginal.ca/.

Qualified Person Statement

The technical information contained in this news release has been reviewed and approved by André Liboiron, P.géo. (# 617), a Qualified ‎Person as defined in "NI 43-101".

Cautionary Statement

Certain information set forth in this news release contains forward-looking statements or information ("forward-looking statements"), including details about the business of Auriginal Mining. All statements in this news release, other than statements of historical facts, that address events or developments that Auriginal Mining expects to occur, are forward-looking statements. By their nature, forward-looking statements are subject to numerous risks and uncertainties, some of which are beyond the Auriginal Mining's control, including the impact of general economic conditions, industry conditions, volatility of commodity prices, currency fluctuations, environmental risks, operational risks, competition from other industry participants, stock market volatility. Although the Company believes that the expectations in its forward-looking statements are reasonable, its forward-looking statements have been based on factors and assumptions concerning future events which may prove to be inaccurate. Those factors and assumptions are based upon currently available information. Such statements are subject to known and unknown risks, uncertainties and other factors that could influence actual results or events and cause actual results or events to differ materially from those stated, anticipated or implied in the forward-looking statements. Accordingly, readers are cautioned not to place undue reliance on the forward-looking statements, as no assurance can be provided as to future results, levels of activity or achievements. Risks, uncertainties, material assumptions and other factors that could affect actual results are discussed in Auriginal Mining's public disclosure documents available at www.sedarplus.ca. Furthermore, the forward-looking statements contained in this document are made as of the date of this document and, except as required by applicable law, Auriginal Mining does not undertake any obligation to publicly update or to revise any of the included forward-looking statements, whether as a result of new information, future events or otherwise. The forward-looking statements contained in this document are expressly qualified by this cautionary statement.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. 

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