Tertiary Minerals Advances Target A1 Drilling in Northwest Zambia Copper-Silver Project

Tertiary Minerals has advanced drilling activities at its Target A1 prospect within the Mushima North Project in northwest Zambia, as it continues to explore significant copper, silver and zinc mineralisation in the region.

The latest drilling programme is part of the company’s broader strategy to define and expand a potential mineral resource in one of Zambia’s emerging polymetallic exploration areas.

Expanded Drilling Programme Underway

The current drilling campaign at Target A1 includes reverse circulation (RC) drilling aimed at testing:

Extensions of near-surface oxide mineralisation
Infill drilling to support a future Mineral Resource Estimate
Additional exploration targets at nearby areas within the licence

The programme builds on earlier drilling phases that confirmed widespread polymetallic mineralisation, including copper, silver and zinc, within a large soil anomaly footprint.

Promising Copper, Silver and Zinc Results

• Previous exploration at Target A1 has identified:
• Broad zones of copper and zinc mineralisation
• Significant silver values in soil and drill samples
• Mineralisation extending over several hundred metres and remaining open i multiple directions

These results have encouraged continued drilling, with further work aimed at better defining the scale, grade and continuity of the mineral system.

Progress Toward Resource Definition

Tertiary Minerals is working toward producing a JORC-compliant Mineral Resource Estimate for Target A1. The company has already defined a JORC Exploration Target in earlier updates and is now focusing on infill drilling and technical studies.

The objective is to move the project closer to a maiden resource classification by improving geological confidence and expanding the known mineralised footprint.

Strategic Importance of Mushima North

The Mushima North Project is located in a highly prospective Iron-Oxide-Copper-Gold (IOCG) belt in Zambia, a region known for hosting large-scale copper systems.

Target A1 is one of several exploration targets within the licence area and sits within a broader portfolio of prospects being evaluated for future development potential.

Outlook

With drilling ongoing, Tertiary Minerals plans to continue step-out and infill programmes while integrating geological and geochemical data. The company aims to better understand the scale of mineralisation and advance toward resource estimation and potential development pathways.