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TLO 5.37 +5.7% BNKR 4.88 +1.7% GG 2.25 +3.2% MJS 0.100 +5.3% PAAS 62.54 +3.6% PE 0.230 +0.0% SGML 17.19 +4.8% LAR 10.34 −1.1% NED 0.025 +0.0% GEN 0.080 +0.0% TVI 0.060 +0.0% SKYG 0.025 −37.5% WRLG 0.660 +6.5% FFU 0.120 −7.7% LOD 0.310 +3.3% CBI 0.110 +0.0% TLO 5.37 +5.7% BNKR 4.88 +1.7% GG 2.25 +3.2% MJS 0.100 +5.3% PAAS 62.54 +3.6% PE 0.230 +0.0% SGML 17.19 +4.8% LAR 10.34 −1.1% NED 0.025 +0.0% GEN 0.080 +0.0% TVI 0.060 +0.0% SKYG 0.025 −37.5% WRLG 0.660 +6.5% FFU 0.120 −7.7% LOD 0.310 +3.3% CBI 0.110 +0.0%
Production / Operations Routine +

Marimaca Provides Positive Progress Update on the MOD and Sulphuric Acid Strategy

Marimaca Copper Advances MOD Permitting Toward H2 FID Amidst Pampa Medina Exploration Upside

By The Northwire Desk — AI Analysis May 19, 2026 · 16:10 MARI · 8.17 Marimaca Copper Corp.
Executive Summary
  • MOD Development Progress: Marimaca provided a comprehensive update on the Marimaca Oxide Deposit (MOD), highlighting progress toward a Final Investment Decision (FID) targeted for the second half of 2026.
  • Permitting Milestones: Critical sectorial permits (Closure Plan, Open Pit Mining Method) were submitted to SERNAGEOMIN in April 2026; approvals are expected in Q4 2026. Electrical connection authorization was received from CEN for the El Lince Line.
  • Site Works & Engineering: Tender process launched for a lead Integration Engineer (EPCM). Early site works, including road upgrades and highway intersection improvements, scheduled to commence June 2026.
  • Sulphuric Acid Strategy: Signed a non-binding MOU with a large-scale acid plant operator in Mejillones to explore a joint venture for acid supply, potentially refurbishing the Dos Amigos Acid Plant (PADA). This aims to reduce costs and mitigate volatility compared to market forecasts of $95/tonne.
  • Surface Rights: Secured provisional easements for infrastructure required by the 2025 DFS; final grant expected in Q3 2026 following negotiations with the Chilean Government.
  • Financing: Debt financing process formally commenced with advisor Endeavour Financial; final funding strategy to be announced by Q4 2026.
  • Pampa Medina Exploration: New drilling results confirm continuity of sediment-hosted copper-silver mineralization across a 3km x 1.5km area. Notable intercepts include 424m @ 0.58% Cu and 2.2g/t Ag (SPRD-06).
  • Management Commentary: CEO Hayden Locke emphasized systematic de-risking of the MOD across permitting, surface rights, engineering, and financing workstreams to support construction-ready status.
Material Impact
  • Permitting Timeline Validation: The news confirms the company is on track for the previously stated H2 2026 FID target following the November 2025 Environmental Approval (RCA). This reduces regulatory uncertainty but does not accelerate the timeline beyond previous guidance, categorizing it as expected progress rather than a surprise catalyst.
  • Cost Mitigation Strategy: The MOU for sulphuric acid supply addresses a key operational cost risk identified in the DFS ($95/tonne market forecast vs. $70/tonne internal target). While positive, the non-binding nature and reliance on future negotiations mean this is incremental value enhancement rather than immediate cash flow certainty.
  • Financing Progress: Commencing debt financing with Endeavour Financial is a necessary step to bridge the gap between the C$136.5M net treasury raised in February 2026 and the $587M USD CapEx identified in the DFS. However, no specific terms or amounts were disclosed, leaving the funding gap unresolved at this stage.
  • Exploration Continuity: Pampa Medina results reinforce the district potential but remain secondary to the MOD for near-term valuation. The high-grade intercepts support long-term optionality but do not materially alter the core project economics of the flagship oxide deposit in the immediate term.
  • Market Context: Given the stock's decline from $12.57 (Jan 2026) to ~$8.17 (May 2026), this news serves as a validation of execution rather than a fundamental re-rating event. The market appears to be pricing in the funding risk and permitting timeline, making these updates routine confirmations of the path forward.
MARI · Price
Company Overview
  • Company: Marimaca Copper Corp. (TSX: MARI).
  • Flagship Project: Marimaca Oxide Deposit (MOD), an IOCG-type copper deposit in Antofagasta, Chile.
  • Project Status: Definitive Feasibility Study (DFS) completed August 2025; Environmental Approval (RCA) received November 2025. Construction readiness targeted for H2 2026.
  • Production Profile: 13-year reserve life, nominal 50 ktpa copper cathode production target. Life-of-mine average 43 ktpa.
  • Secondary Asset: Pampa Medina deposit (sediment-hosted copper-silver manto), currently in exploration/delineation phase to support district growth potential beyond the MOD capacity.
Read the original news release →

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