Marimaca Copper (TSX:MARI) - Pampa Medina Shows Tier-One Potential with 5.7% Copper Hits

Interview with Hayden Locke, President & CEO of Marimaca Copper Corp.Our previous interview: https://www.cruxinvestor.com/posts/marimaca-copper-tsxmari-tier-one-discovery-potential-alongside-mod-growth-10320Recording date: 8th June 2026Marimaca Copper’s Pampa Medina discovery in Chile’s Antofagasta region is emerging as a potentially world-class copper asset, with drilling confirming both exceptional grades and expanding scale. Recent results from key drill holes have defined an ultra high-grade bornite-rich core, including intersections such as 16 metres at 5.7% copper and 62.6 g/t silver. These findings sit within a broader mineralised column that can reach up to 100 metres in thickness at average grades around 1.2% copper, significantly enhancing the project’s economic potential.Drilling has now confirmed mineralisation across an area exceeding 2 square kilometres, with the system remaining open along a northeast–southwest trend and at depth. Based on early geometric assumptions, the deposit could host between 120 million and 500 million tonnes of ore, depending on true thickness. The presence of mineralisation in multiple geological units, including newly identified zones in basement rocks, further supports the potential for substantial expansion.These developments are prompting a shift in mining strategy. Rather than a selective underground approach, Marimaca is evaluating bulk mechanised mining methods that could lower costs and allow extraction of a larger portion of the mineralised column. This shift could materially increase recoverable tonnage and improve project economics.While the Marimaca Oxide Deposit remains the company’s near-term development priority—and is considered valuable enough to justify the current market valuation on its own—Pampa Medina is increasingly seen as a standalone tier-one opportunity. Ongoing drilling, a forthcoming maiden resource estimate, and strong copper market fundamentals position the discovery as a potentially significant asset in a supply-constrained global market, with the scale and location likely to attract interest from major mining companies.View Marimaca Copper's company profile: https://www.cruxinvestor.com/companies/marimaca-copperSign up for Crux Investor: https://cruxinvestor.com