Marimaca Copper (TSX:MARI) - Drilling Results Show District-Scale Copper System

Interview with Hayden Locke, CEO and President, Marimaca Copper 

Our previous interview: https://www.cruxinvestor.com/posts/marimaca-copper-tsxmari-big-discovery-adds-high-grade-scale-7123

Recording date: 3rd July, 2025

Marimaca Copper Corp has announced a potentially transformational discovery at its Pampa Medina project in Chile's Atacama Desert, with drilling results intersecting some of the highest-grade copper mineralization reported in recent Chilean exploration. The Vancouver-based company's breakthrough drilling campaign has revealed exceptional high-grade copper intersections that represent a rare geological occurrence in Chile.

The standout result from hole SMRD-13 delivered 6 meters of 12.0% copper from 594 meters downhole within a broader 26 meters of 4.1% copper, with mineralization consisting primarily of bornite and chalcopyrite hosted in sedimentary units. President and CEO Hayden Locke emphasized the pure copper nature of the discovery, noting "that's all copper. There's no byproducts. There's no gold. There's no silver included in that."

What makes this discovery particularly significant is its geological classification as a sediment-hosted manto system, which is exceptionally rare in Chile. VP Exploration Sergio Rivera, with four decades of Chilean copper exploration experience, compared the deposit to world-class systems: "Sergio says he's never seen a deposit like this other than in very small areas in Chile. So his view is that it's much more analogous to the Kupfershiefer in Poland and Germany and then the African sedimentary copper basin."

The drilling campaign has successfully defined high-grade mineralization across a 600-meter east-west by 1,000-meter north-south area, with further drilling indicating potential extensions to 1.4 kilometers by 1.2 kilometers. The company achieved a remarkable hit rate, with five out of seven drill holes intersecting high-grade mineralized zones across broad step-out spacing.

Despite this exceptional discovery, Marimaca maintains disciplined capital allocation, prioritizing advancement of its Marimaca Oxide Deposit to production while allocating increased exploration budget to define Pampa Medina's full potential. The project benefits from exceptional infrastructure positioning, with proximity to existing mines, powerlines, water pipelines, and minimal permitting risks in Chile's established mining region.

Learn more: https://www.cruxinvestor.com/companies/marimaca-copper

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