Andina Copper Intersects 186m at 0.50% Cu from 38m, within 502m at 0.40% Cu. Extends Shallow Mineralization to the NW

12:00 Uhr  |  The Newswire

June 24 - Andina Copper Corp. (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) is pleased to report further outstanding drill intercepts from the Cobrasco Project in Chocó, Colombia.

Drillhole CDH009 was drilled northwesterly from the same drill pad as CDH006, CDH007 and CDH008 (refer 13 May 2026 News Release) to a final depth of 954m. Results confirm a significant northwesterly extension of near-surface mineralization, with grades notably increasing from 38m downhole. Two additional drillholes, CDH010 and CDH011, have been completed from this same platform, with assays pending.

Wide spaced scout drilling designed to assess the overall scale potential of the Cobrasco mineralized system is ongoing from a new platform located approximately 350m northwest of the previous drill site.

HIGHLIGHTS:

• CDH009 further confirms a significant northwesterly extension of the Cobrasco Central Cu-Mo mineralized system, returning:

502m @ 0.40% Cu, 73ppm Mo, 1.22g/t Ag from 38m

Incl. 388m @ 0.44% Cu, 36ppm Mo, 1.28g/t Ag from 38m

Incl 186m @ 0.50% Cu, 22ppm Mo, 1.48g/t Ag from 38m

• Results expand the drillhole-defined mineralized footprint at Cobrasco Central to approximately 1,200m by 550m, with the footprint continuing to grow through successive step-out drilling. Mineralization remains open in all directions.

• Mineralization persists to the end of CDH009 at 954m; however, copper grade decreases at depth as the intensity of overprinting sericite alteration and associated chalcopyrite-bornite mineralization progressively transitions to a lower-grade potassic-altered domain.

• Additional step-out drillholes CDH010 and CDH011 have been completed from the same platform to further extend the Cobrasco Central mineralized system. Geological logging indicates the mineralized system extends into both holes with assay results pending.

• Preparations underway for introduction of second drill rig. Multiple drill targets and ongoing step-outs planned in the near-term.

Joseph van den Elsen, Andina Copper President and CEO stated:

"Andina Copper continues to systematically advance its scout drilling programme in a northwesterly direction with wide spaced fans of holes aimed at expanding the envelope of porphyry Cu-Mo mineralization. The results of hole CDH009 validate this approach, significantly extending shallow, near-surface copper-molybdenum mineralization 350m to the northwest.

Incredibly, all nine drill holes reported to-date have returned wide intervals of high-grade, near-surface Cu-Mo mineralization. The current drill defined footprint of the Cobrasco mineralized porphyry system is approximately 1,200m x 550m and remains open in all directions. Mobilization of a second diamond drilling rig will expedite continued systematic and aggressive exploration and evaluation of the Cobrasco Central system and enable simultaneous testing of potential new porphyry centers"

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Figure 1: Cobrasco Project plan view (north zoom) showing CDH009 and recent drilling over copper-in-soil geochemistry. Surface geochemistry and field mapping indicate the system remains open to the north, northwest and west.

Geology and Mineralization - Drillhole CDH009

Hole CDH009 was collared from the same drill pad as CDH006 - CDH008 (and subsequent holes CDH010 - CDH011) and drilled NW to test for the continuation of shallow mineralization previously intersected from this collar position, bisecting a wide untested area between drill holes CDH006 and CDH008. All holes completed thus far from this pad have intersected consistent intervals of shallow continuous moderate - high-grade Cu-Mo mineralization commencing immediately below the oxidized profile, which averages approximately 40m in thickness.

Hole CDH009 (Az: 292o Dip: -55º Depth: 954m) was the fourth hole to be drilled from this drill pad, oriented NW at a relatively shallow dip designed to test approximately 545m horizontally and 780m vertically.

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Figure 2: Cobrasco Central long section (looking E-NE) showing CDH009 and previously reported drillholes with downhole copper grades. CDH009 extends mineralization to the northwest; the system remains open.

The hole intersected a leached cap with supergene oxidation developed to a depth of approximately 41m. Minor chalcocite coatings on chalcopyrite occur immediately below the base of oxidation but are of negligible volumetric significance. Below the base of oxidation and extending to a depth of approximately 350m downhole, significant chalcopyrite mineralization occurs as disseminations and hairline veinlets affecting several phases of felsic rhyolite and intermediate daci-andesite porphyries, as well as magmatic-hydrothermal breccias.

Below 350m, copper and molybdenum mineralization is principally associated with halo veins and alteration fronts comprising silica, white and green sericite, and molybdenite-bearing B-type veins respectively; darker Early Dark Micaceous (EDM) halo veins also carry chalcopyrite-bornite mineralization. Although not pervasive, chalcopyrite-bornite mineralization associated with green and white sericite halo veins remains locally abundant within a preserved potassic (biotite-K-feldspar) altered domain and persists to the end of the hole at 954m.

Copper grades decrease with depth (Figure 3, right-hand photo) as the intensity and abundance of the sericitic overprint progressively diminish within an increasingly dominant potassic-altered domain.

The rhyolite porphyry suite commonly displays flow banding (often convolute) supporting the dome complex affiliation for the felsic rhyolite "family" of porphyries.

In broad terms, the rhyolite porphyries intrude the intermediate-composition daci-andesitic porphyries. The highest grades are found in the upper 300m of the hole and are closely associated with intensive white to green sericite alteration. This interval also contains two magmatic-hydrothermal breccias associated with rhyolite porphyries between 150 - 250m downhole. Although mineralized, these breccias do not attain the very high copper grades observed elsewhere in the system.

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Figure 3: Left - CDH009, 263m: Chalcopyrite zone in green and white sericite (phyllosilicate) alteration without early quartz veining; chalcopyrite (Cp) locally replaced by bornite (Bn). Sample interval grading 1.78% Cu, 10 ppm Mo, and 5.7 g/t Ag (262-264 m)

Middle - CDH009, 305m: Rhyolite (quartz-eye) porphyry with intense white and green sericite alteration and disseminated chalcopyrite partially replaced by bornite. Sample interval grading 1.17% Cu, 18ppm Mo, and 3.6 g/t Ag (304-306 m).

Right - CDH009, 810m: Rhyolite (quartz-eye) porphyry affected by quartz-potassium feldspar (potassic) alteration, partially overprinted by green and white sericite alteration carrying chalcopyrite and bornite mineralization, demonstrating that copper mineralization is lower grade but persists to depth. Sample interval grading 0.13% Cu, 42ppm Mo, and 0.8 g/t Ag (810-812 m).

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ON BEHALF OF THE BOARD

Joseph van den Elsen

President & Chief Executive Officer

joseph@andinacopper.com

Jordan Webster

VP - Technical Communications

jordan@andinacopper.com

QUALIFIED PERSON

Francisco Montes, a consultant of Andina Copper Corp and a "qualified person" ("QP") within the definition of that term in National Instrument 43-101, Standards of Disclosure for Mineral Projects, has reviewed and approved the technical information contained in this news release. Francisco Montes is a member of Australian Institute of Geoscientists (MAIG #4160).

QAQC

CDH009 was collared with a PQ size drill string to a depth of 169.10m and continued with HQ/HQ3 to a final depth of 954.00m. In all cases the drill core was extracted from the core barrel by the drill contractor under the supervision of Andina Copper personnel and placed in core boxes with appropriate depth markers (core blocks) and padding added for extra protection during transport. Full core boxes were then strapped closed before being transported by helicopter and pickup truck to the Cobrasco core cutting facility in Quibdó. The drill core was cleaned where required, marked-up and photographed, prior to undergoing geotechnical and geological logging. All core segments were cut by diamond saw by Andina Copper technicians, other than the top saprolite intervals that could be cut and sampled using hand tools. All sampling was conducted in nominal 2m intervals with cut-lines marked by the supervising geologists to ensure representative sampling. Samples were placed in plastic bags with non-repeatable sample tags and bagged in polyweave sacks ready for transport.

The core trays with the remaining half-core are stored at the Andina Copper facility in Quibdó for ongoing geotechnical (Terraspec spectral analysis, magnetic susceptibility readings, rock density measurements) and follow-up detailed geological logging. From Quibdó, core samples were sent to the ALS sample preparation facility in Medellin, an accredited laboratory which is independent of the Company. Prepared sample pulps were then forwarded to the ALS laboratory in Lima, Peru for gold (Au-AA23), multi-elements (ME-MS61), and "overlimits" analysis (ME-OG62 including copper Cu-OG62). Coarse and fine rejects are routinely returned by ALS Medellin for storage at the Andina Copper storage facility.

Table 1: Cobrasco Project - Significant Drill Intercepts

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Note 1: The 502m @ 0.40% Cu, 73ppm Mo interval is constrained to maximum 10m <0.2% Cu.

Note 2: Interval widths are measured down-hole and uncorrected. They do not necessarily represent true widths of mineralization.

Table 2: Cobrasco Project - Drill Collar Parameters (WGS84, UTM Zone 18N)

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ABOUT ANDINA COPPER

Andina Copper Corporation is a unique South America-focused copper explorer listed on the TSX Venture Exchange (TSXV:ANDC), Frankfurt (FSE: FIR), and OTC (OTCQB: PMMCF) exchanges. The Company holds two significant discoveries along the world's premier copper producing Andean porphyry belt in Argentina and Colombia, and a compelling undrilled copper-gold target in the prolific copper production district of the Coastal Cordillera of Chile.

FORWARD-LOOKING STATEMENT

This news release contains certain statements that may be deemed "forward-looking statements". All statements in this release, other than statements of historical fact, that address events or developments that Andina Copper expects to occur, are forward-looking statements. Forward-looking statements are statements that are not historical facts and are generally, but not always, identified by the words "expects" and similar expressions, or that events or conditions "will" or "may" occur. These statements are subject to various risks. Although Andina Copper believes the expectations expressed in such forward-looking statements are based on reasonable assumptions, such statements are no guarantee of future performance, and actual results may differ materially from those in forward-looking statements.

Neither the TSXV nor the Canadian Investment Regulatory Organization accepts responsibility for the adequacy or accuracy of this release.

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