Marimaca Copper Corp.
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- Marimaca Copper Corp. (TSX:MARI, ASX:MC2) operates as a copper exploration and development company focused on advancing its flagship Marimaca Copper Project and district-scale opportunities in Chile's Antofagasta region; the company holds full ownership of the Marimaca Oxide Deposit (MOD) concessions (1-23 Claims) and exploration rights over adjacent La Atomica and Atahualpa claims, encompassing the broader Marimaca District; core assets include the MOD, an IOCG-type oxide copper deposit amenable to open-pit mining and heap leach SX-EW processing to produce high-quality copper cathode, with a targeted initial capacity of approximately 50,000 tonnes annually; additional exploration targets feature the Mercedes, Cindy, Tarso, Sierra, and Roble areas, plus the Sierra de Medina district with high-grade sediment-hosted copper sulphide and oxide potential; the company pursues a hub-and-spoke model leveraging MOD infrastructure for satellite deposits, employs recycled seawater to minimize freshwater use, and emphasizes sustainable green copper production with leading ESG positioning. Marimaca Copper Corp., founded in 2004 and headquartered in Vancouver, Canada, changed its name from Coro Mining Corp. in May 2020; it maintains operations primarily in Chile, with corporate presence in Canada. Recent developments include the August 2025 Definitive Feasibility Study (DFS) for MOD confirming robust capital intensity below $12,000 per tonne of annual copper production, 31%+ after-tax IRR, maiden Ore Reserve estimate of 368 million tonnes at 0.45% total copper, and 13-year mine life with average annual production of 44,900 tonnes copper cathode over the first 10 years at C1 cash costs of $1.99/lb and AISC of $2.30/lb; the company completed reverse circulation drilling at Mercedes Target in November 2024 extending oxide mineralization; it secured C$30.3 million in private placements in August 2024 led by Assore International Holdings acquiring a 14.99% stake; Marimaca finalized acquisition of Pampa Medina property and signed a binding option for Madrugador project in 2024, both in Sierra de Medina, to expand leachable copper resources toward a 70-75,000 tonne annual production goal within five years; the project advances toward final investment decision in second-half 2026.
Pampa Medina Drilling Continues to Validate Sedimentary-Hosted Copper Manto Model
Marimaca Announces Receipt of Environmental Approval for the Marimaca Oxide Deposit
High-Grade Sediment Hosted Mineralization Extended at Pampa Medina – 300m Western Step-out SMRD-16 Intersects 10m of 4.2% Cu within 70m of 1.0% Cu
Marimaca Drills Pampa Medina Sulphides – Intersects Exceptional 6m of 12.0% Cu within 26m of 4.1% Cu in dominantly Bornite in SMRD-13, 40m of 2.1% Cu in SMD-02
Marimaca Extends Pampa Medina Norte Discovery – Intersects 68m at 1.20% and 40m at 1.07% CuT in Dominantly Oxides with Assays Pending for Deep Sulphide Extension
Marimaca reports significant increase in resources at its Marimaca copper project in Chile
Marimaca announces $15.5 million investment from Osisko Gold Royalties