Marimaca Reports Further High-Grade Copper and Silver Intersections more than 600m from Pampa Medina West Step-Out Drilling
Marimaca transitions from single-asset developer to district-scale copper play as Pampa Medina step-outs confirm high-grade continuity.
The most recent news (March 11, 2026) reports high-grade copper and silver intersections from step-out drilling at the Pampa Medina deposit, located 28km from the flagship Marimaca Oxide Deposit (MOD). Key intercepts include 74m of 1.21% Cu and 7.9gpt Ag, and 38m of 1.43% Cu and 11.8gpt Ag. This drilling confirms mineralization more than 600m west of previous step-outs, expanding the area of interest to 3km by 2km. Consequently, the company is aggressively scaling its 2026 exploration program to 100,000m using 10 drill rigs.
The news is Routine - Positive. While the drill results are high-grade and expand the deposit footprint, they are incremental to a series of successful results reported throughout late 2025 and early 2026. The market was already aware of the "manto-style" discovery and the company's intent to prioritize Pampa Medina following the C$409 million global financing closed in February 2026. The material impact lies in the scale of the 2026 program (100,000m), which signals management's confidence that Pampa Medina could eventually rival or surpass the flagship MOD in scale, potentially transforming Marimaca into a multi-asset producer.
Marimaca Copper is focused on the Antofagasta region of Chile. Its flagship is the Marimaca Oxide Deposit (MOD), a low-capital-intensity project with a DFS (Aug 2025) outlining 50ktpa copper cathode production over a 13-year mine life. The project boasts a post-tax NPV8 of US$709M and an IRR of 31% at US$4.30/lb copper. The company is now pivoting toward a "hub-and-spoke" model, using the MOD infrastructure to potentially process ores from satellite deposits like Pampa Medina and Madrugador.