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Marimaca Announces Receipt of Environmental Approval for the Marimaca Oxide Deposit

By The Northwire Desk — AI Analysis Nov 11, 2025 · 07:42 MARI · 10.96 Marimaca Copper Corp.
MARI · Price

Executive Summary

  • Marimaca Copper’s Chilean subsidiary received the formal Resolución de Calificación Ambiental (RCA) for its Marimaca Oxide Project, confirming approval of its Environmental Impact Statement submitted in December 2024.
  • The RCA enables the company to move into the next permitting phase—Sectorial Permits—bringing the project closer to construction readiness, now targeted for the second half of 2026.
  • Management highlighted the milestone as a key step toward a Final Investment Decision and noted upcoming exploration updates from the Pampa Medina target.

Key Details

  • RCA Issuance: Formal environmental qualification granted for the Marimaca Oxide Project (MOD) in Antofagasta, Chile.
  • Permitting Path Forward: Receipt of RCA allows progression to Sectorial Permits, which are required for various construction and operational stages.
  • Construction Timeline: Company aims to be construction‑ready in H2 2026 pending completion of sectorial permits and final investment decision.
  • Management Comments – Jose Antonio Merino (Managing Director, Chile & CFO): Emphasized rigorous baseline studies, stakeholder engagement, and the company’s commitment to high environmental and social standards.
  • Management Comments – Hayden Locke (President & CEO): Acknowledged the milestone, referenced the recent loss of Colin Kinley, reaffirmed focus on FID and project sanctioning, and noted ongoing exploration at Pampa Medina with an upcoming update.
  • Exploration Outlook: Continued work at Pampa Medina; expectation to release an exploration update “in the very near term.”
  • Strategic Impact: The approval is presented as a material positive development that reduces regulatory risk and advances the project toward commercial production (50 ktpa copper per the Definitive Feasibility Study).

Notable Quotes

“Developing our assets in Chile to the highest possible environmental and social standards is a core objective of Marimaca… The receipt of the RCA reflects the exceptional work completed, over several years, by our team.” – Jose Antonio Merino

“Our focus now shifts to the critical path for Final Investment Decision and Project Sanctioning, for which we have set ourselves the ambitious target of being ready in the second half of 2026.” – Hayden Locke

Read the original news release →

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