Tertiary Minerals Starts New Drilling at Mushima North After High-Grade Silver Hits
Tertiary Minerals Launches 1,500m Drilling Campaign at Mushima North, Zambia After High-Grade Silver, Copper and Zinc Results
AIM-listed Tertiary Minerals has commenced a planned 1,500-metre air-core and reverse-circulation (AC/RC) drilling programme at its Mushima North Project in north-west Zambia, focused on Target A1.
The programme is designed to test the strike and downdip extensions of the polymetallic mineralisation discovered in late 2024.
The follow-up campaign follows encouraging late-2024 results that the company reports as silver-rich intervals with associated copper and zinc — not gold. Reported intersections from the initial programme include 57 m at 25 g/t Ag, 0.20% Cu and 0.15% Zn (from 14 m) and 65 m at 23 g/t Ag, 0.14% Cu and 0.27% Zn (from 9 m).
The new drilling will test the surface footprint of the silver- and zinc-in-soil anomaly — approximately 1.6 km of strike and up to 300 m width — and will investigate downdip continuity to depths of up to 150 m.
The programme is planned as east-west drill lines spaced roughly 250 m apart, with holes collared about 100 m apart and deeper RC holes in key locations.
Target A1 is situated in the same mineralised district as the historic Kalengwa copper-silver mine (approximately 28 km to the west), and previous work at A1 identified thick, near-surface silver mineralisation commonly associated with low-grade copper and zinc over widths of several hundred metres.
Managing Director Richard Belcher said the company designed the programme to follow up on the “highly encouraging” initial drilling, noting that many holes ended in mineralisation and that the follow-up is intended both to better define the surface footprint and to test down-dip potential.
Mushima North (Licence 27068-HQ-LEL) is held through Copernicus Minerals Limited, which is 90% owned by Tertiary Minerals (Zambia) Limited with the remaining 10% held by local partner Mwashia Resources Limited.
The project operates under a technical cooperation agreement with First Quantum Minerals.
