Marimaca Copper extends high-grade bornite zone at Pampa Medina

• Ongoing step-out program continues to support geological model
• Drilling extends mineralisation into the basement metasediments for first time
• Results indicates potential for further extension at depth
• Near surface oxide mineralisation also intersected

Marimaca Copper Corp. (ASX:MC2) has received additional positive assay results from ongoing step-out drilling at the Pampa Medina deposit in Chile.

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Pampa Medina is located approximately 28km east of the company’s Marimaca oxide deposit (MOD) and results continue to extend the central high-grade sulphide zone and confirm multiple stacked copper-silver horizons across the sedimentary and volcanic sequence.

A highlight hole extended the ultra-high-grade bornite zone 300m south of previously released drilling, returning 20m at 2.65% copper and 13.9 grams per tonne (g/t) silver from 564m, including 6.0m at 6.11% copper and 24.0 g/t silver and 104m at 1.01% copper and 4.7 g/t silver from 664m, including 40m at 2.04% copper and 11.1 g/t silver.

Drilling is a separate hole also intersected mineralisation in basement metasediments for the first time, indicating potential for depth extensions beyond the previously defined host units.

“Our step-out program at Pampa Medina continues to deliver high-grade copper-silver intercepts across the central area of interest and further supports our geological model of multiple high-grade stacked mantos,” VP Exploration, Sergio Rivera, said.

“This is an encouraging development, as it expands the prospective stratigraphy beyond the previously defined host units.

“The area drilled to date at Pampa Medina represents only a very limited portion of the broader Sierra de Medina land package, and we are excited to continue testing the lateral and depth extent of the system following completion of this delineation campaign across the central AOI.”

Marimaca’s 2026 drilling campaign is focused on three priority goals: definition of the high- grade central AOI, delineating the identified oxide extensions, and further step-out drilling to test potential extensions of the broader system identified in geophysical work completed to date.

MC2 is steady at $7.97 with a Mkt cap of $1.075B ahead of market opening.

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