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Marimaca Reports Significant Progress in MOD Development and Sulphuric Acid Strategy

Author:
FAQSIR News Desk
Last Updated:
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#Positive Developments for Marimaca Copper Corp.

Marimaca Copper Corp., listed on TSX and ASX, has successfully made important strides in the development of the Marimaca Oxide Deposit (MOD). The company announced its progress in permitting and strategic planning, which are crucial for advancing towards construction and operational readiness.

#Permitting Advances

Following the Environmental Approval received in November 2025, Marimaca completed the submission of critical sectorial permits to the Servicio Nacional de Geología y Minería (SERNAGEOMIN) in April 2026. These permits, including a Closure Plan and approvals for essential infrastructure, are expected to be approved by Q4 2026. This achievement marks a significant milestone before the company can commence Pre-Final Investment Decision (FID) construction activities.

#Electric Connection Authorization

On May 13, 2026, Marimaca secured an electrical connection authorization from the National Electric Coordinator for the 110kv El Lince Line, located approximately 13 kilometers from the MOD site. This authorization is currently subject to a 15-day challenge period, after which it will be confirmed, further facilitating project progression.

#Engineering and Site Preparation

Marimaca has initiated the tender process for selecting a lead Integration Engineer, inviting proposals from recognized Engineering, Procurement, and Construction Management firms. Additionally, early site work preparations are progressing, with expectations to start upgrades to site access roads and intersections by June.

#Strategic Sulphuric Acid Supply

The company has also signed a non-binding Memorandum of Understanding (MOU) with a major sulphuric acid supplier to explore a joint venture for future sulphuric acid needs. The MOU is expected to enhance cost predictability and operational efficiency by utilizing Marimaca's existing sulphuric acid plant, thereby mitigating risks associated with market volatility.

#Securing Surface Rights

Marimaca has obtained provisional easements covering all necessary surface rights for the MOD development, as outlined in its Definitive Feasibility Study (DFS). The final grant of these easements is projected for Q3 2026, following negotiations with the Chilean Government.

#Funding and Future Steps

The company is actively engaging with potential financing partners through its independent debt advisor, Endeavour Financial, to secure funding for MOD development. The final funding strategy is anticipated by Q4 2026, which aligns with ongoing project developments.

#Key Takeaways

  • Marimaca has made significant progress in permitting, submitting sectorial permits ahead of schedule.
  • Electrical connection authorization was secured, further facilitating project readiness.
  • Active efforts are underway to enhance sulphuric acid supply strategies to stabilize costs.
  • Provisional surface rights have been secured, ensuring land access for the MOD project.
  • Funding preparations are ongoing, with a strategy expected to be outlined in Q4 2026.

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Frequently Asked Questions

Marimaca has successfully advanced its permitting and development activities, including the completion of critical sectorial permits and receiving electrical connection authorisation, all pivotal steps towards commencing construction of the MOD.
By exploring a joint-venture for a sulphuric acid supply through the PADA Plant, Marimaca aims to mitigate volatility and enhance cost predictability, which could lead to improved operating margins over the MOD's lifespan.
Marimaca remains on track, with approvals for critical sectorial permits expected in Q4 2026, marking a significant milestone in the project’s development schedule.
The acquisition of electrical connection authorisation is a key achievement for Marimaca, enabling the company to progress towards construction readiness and enhancing the project's overall viability.
Securing provisional easements for surface rights ensures land access certainty essential for the development of the MOD, thus reinforcing the project’s advancement and execution planning.
Marimaca has initiated the debt financing process with experienced advisors and expects to announce a final funding strategy by Q4 2026, indicating a proactive approach to securing necessary capital.
Following the approval of the remaining key permits, Marimaca is poised to initiate full construction activities, setting the stage for a future Final Investment Decision (FID).
The ongoing drilling campaign at Pampa Medina is integral to Marimaca’s exploration strategy, with findings potentially enhancing the company’s resource base and overall value proposition.