Arizona Sonoran Copper (TSX:ASCU) to Advance Cactus Project Independently After Nuton Talks

3 min read | December 29, 2025 06:51 AM EST | By Team Kalkine Media

Highlights

  • Arizona Sonoran Copper and Nuton will begin discussions in January regarding a possible early termination of their joint venture option agreement.
  • The company will continue advancing the Cactus Project independently, including completion of a Definitive Feasibility Study targeted for the second half of 2026.
  • ASCU is progressing permitting amendments, financing preparations, and early development activities to support a potential investment decision in late 2026.

Arizona Sonoran Copper Company Inc. (TSX:ASCU) has announced plans to initiate discussions with Nuton LLC, a Rio Tinto Venture, regarding a potential early termination of their option to joint venture agreement for the Cactus Project. The discussions are expected to begin in January following preliminary consultations between the two parties. As the process unfolds, the company has confirmed it will continue advancing the Cactus Project on a standalone basis while progressing key technical, permitting, and development milestones.

Discussions With Nuton to Begin in January

The company stated that it does not intend to provide further updates regarding its discussions with Nuton until a definitive outcome is reached. The company noted there is no certainty on the timeline for negotiations or whether an agreement will be finalized. Any outcome remains subject to mutual agreement, and there is no assurance that discussions will result in terms acceptable to both parties.

Standalone Development Strategy for Cactus

Following the completion of a positive standalone Pre-Feasibility Study in 2025, the company plans to continue advancing the Cactus Project independently. The next major milestone is the completion of a standalone Definitive Feasibility Study, which is targeted for the second half of 2026. Arizona Sonoran Copper has indicated that this work will support an eventual final investment decision, which could occur as early as the fourth quarter of 2026.

Alongside feasibility work, the company is continuing efforts related to permitting amendments, project financing initiatives, and early-stage development activities. These activities are expected to be further defined and implemented in the coming year.

Overview of the Cactus Project

Arizona Sonoran Copper holds a 100% interest in the Cactus Project, a brownfield copper development located on privately held land. The project hosts a large-scale porphyry copper resource and benefits from existing infrastructure, including access to highways and rail lines. Onsite permitted water access and a state-led permitting process contribute to the project’s development framework.

The 2025 Pre-Feasibility Study outlines plans for a long-life open-pit copper operation designed to support sustained production over multiple decades. The project’s location and infrastructure access are intended to support efficient construction and operational planning.

 


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