14:48:52 EDT Wed 13 May 2026
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Andina Copper Corp
Symbol ANDC
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Close 2026-05-12 C$ 1.05
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Andina Copper drills 272 m of 0.50% Cu at Cobrasco

2026-05-13 12:28 ET - News Release

Mr. Joseph van den Elsen reports

ANDINA COPPER INTERSECTS 152M AT 0.67% CU FROM 54M, WITHIN 272M AT 0.50% CU

Andina Copper Corp. has released continuing outstanding drill intercepts from the Cobrasco project in Choco, Colombia.

Drill hole CDH008 was completed to a downhole depth of 652.25 metres, with results extending the Cobrasco Central Cu-Mo (copper-molybdenum) porphyry system to the north. Near-surface mineralization begins at approximately 52 metres downhole and is associated with multiple mineralized porphyry phases and related magmatic-hydrothermal breccias. Two additional drill holes have subsequently been completed from the same platform, including CDH009 (completed; assays pending) and CDH010 (in progress). Visual logging indicates sulphide mineralization consistent with the broader Cobrasco Central system in both holes.

Highlights:

  • CDH008 further confirms the northwest (NW) extension of the Cobrasco Cu-Mo mineralized system, returning:

272 m at 0.50 per cent Cu, 75 parts per million Mo (molybdenum), 1.92 g/t Ag from 52 m

Including 152 m at 0.67 per cent Cu, 68 ppm Mo, 1.90 g/t Ag from 54 m

  • Drill hole CDH008 was drilled due north to test the northern continuity and extension of the shallow mineralized zone at Cobrasco Central.
  • Additional stepout drill holes from the same drill pad, including CDH009 (completed) and CDH010 (in progress), are testing northwest and west-southwest (WSW) extensions to mineralization, respectively. Assays for both holes remain pending.
  • The Cobrasco mineralized footprint continues to expand with successive drilling and currently extends approximately 1,100 m along strike and 550 m laterally.
  • Mineralization remains open in all directions, with further expansion potential toward the NW and WSW imminent, pending results from CDH009 and CDH010.

Continuing scout drilling continues, with further large stepout holes targeting the NW and northern extensions of the system planned.

Andina Copper's president and chief executive officer, Joseph van den Elsen, commented:

"We continue to systematically advance a wide-spaced scout drilling program, actively testing the limits of the Cobrasco system with wide fans of significant stepout drill holes. The system continues to grow with each successive drill hole, with the mineralization footprint already covering an area of approximately 1,100 m by 550 m, and results from CDH009 and CDH010 expected to further extend.

"Surface geochemistry and field observations strongly suggest that the mineralization continues to the north and northwest, and indeed remains open in all directions.

"Preparations are being made for the mobilization of a second diamond drilling rig to support the next phase of definition drilling of Cobrasco Central and new porphyry centers still to be tested."

Geology and mineralization -- drill hole CDH008

Drill hole CDH008 was collared from the same drill pad as CDH006 and CDH007 and drilled due north at an inclination of negative 50 degrees to test the northern continuation of the shallow mineralized zone previously intersected from this collar position. Previous drill holes from the platform intersected broad intervals of shallow, continuous moderate- to high-grade Cu-Mo mineralization commencing from approximately 38 m downhole, including intervals of up to 486 m in CDH006 (see Table 1: Cobrasco project -- significant drill intercepts).

CDH008 (azimuth 360 degrees, dip negative 50 degrees, depth 652.25 m) was designed to test approximately 420 m laterally and 500 m vertically from the collar position.

The drill hole intersected a leached cap with intense supergene alteration developed over intermineral rhyolite porphyry. Beneath the supergene-leached zone, a 30 m interval containing chalcocite coating hypogene sulphides suggests the incipient development of secondary copper enrichment.

The upper portion of the hole comprises sericite-altered intermineral rhyolite porphyry intruding dacite-andesite porphyry. The rhyolite porphyry contains early quartz (A-type) veins with disseminated chalcopyrite and pyrite mineralization.

The strongest mineralization encountered in CDH008 is associated with several potassic and sericite-altered magmatic-hydrothermal breccias spatially related to intermineral rhyolite porphyry intrusions. Higher Cu-Mo grades are consistently associated with hydrothermal breccia phases, where chalcopyrite occurs as matrix infill and as thin cross-cutting veinlets overprinting earlier molybdenite mineralization. Bornite was locally observed, commonly rimming chalcopyrite and may indicate a later higher-sulphidation mineralizing event.

Younger late-intermineral rhyolite phases were intersected between 217 m and 253 m, and again below 290 m, where mineralization and alteration intensity decrease and are characterized by weak sericite alteration associated with D-type veins.

At 398 m, the drill hole intersected a crowded granodiorite porphyry interpreted to represent an earlier, relatively barren precursor intrusive phase.

Qualified person

Francisco Montes, a consultant of Andina Copper 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 No. 4160).

QA/QC (quality assurance/quality control)

CDH008 was collared with a PQ size drill string to a depth of 126 metres and continued with HQ/HQ3 to a final depth of 652.25 m. 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 sealed before being transported by helicopter and pickup truck to the Cobrasco core cutting facility in Quibdo. Core was cleaned where required, marked up and photographed, prior to undergoing geotechnical and geological logging. All core was cut by diamond saw by Andina Copper technicians, other than the top saprolite intervals that could be cut and sampled by hand tools. All sampling was conducted in nominal two m 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 Quibdo for ongoing geotechnical (Terraspec spectral analysis, magnetic susceptibility readings, rock density measurements) and follow-up detailed geological logging. From Quibdo, core samples were sent to the ALS preparation facility in Medellin, an accredited laboratory which is independent of the company. Prepared sample pulps were then sent to the ALS laboratory in Lima, Peru, for gold (Au-AA23), multielements (ME-MS61), and overlimits analysis (ME-OG62 including copper Cu-OG62). Coarse and fine rejects are returned by ALS Medellin for storage at the Andina Copper storage facility.

Note 1: The 272 m at 0.50 per cent Cu, 75 ppm Mo interval is constrained to maximum 10 m less than 0.2 per cent Cu.

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

About Andina Copper Corp.

Andina Copper is a unique South America-focused copper explorer listed on the TSX Venture Exchange, 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.

We seek Safe Harbor.

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