Tertiary Minerals plc (AIM: TYM) has announced a follow-up drilling programme at its Mushima North Project in Zambia, targeting up to 1,500 metres of Air Core and Reverse Circulation drilling at Target A1.
The initiative builds on encouraging 2024 results, which included a 65-metre intersection grading 23 g/t silver, 0.14% copper, and 0.27% zinc—highlighting the project’s polymetallic potential.
The upcoming campaign will focus on testing a 1.6 km x 0.3 km silver-zinc anomaly situated within a broader copper-in-soil zone. In addition to shallow drilling, deeper holes are planned to evaluate mineralisation at depth.
Located 20km east of the historic Kalengwa copper mine, the project is supported by a technical cooperation agreement with First Quantum Minerals, further strengthening its exploration and development prospects.
Highlights:
· Planned drilling programme of up to 1,500m Air Core/Reverse Circulation drilling at Target A1.
· Drilling to test the along strike continuation of the coincidental 1.3km by 0.3km silver- and zinc-in-soil anomaly within the broader, kilometre-scale copper-in-soil anomaly.
· Initial drilling of this target in late 2024 returned drill intersections including (downhole widths, true widths unknown):
· 57m at 25 g/t Ag, 0.20% Cu, 0.15% Zn from 14m downhole (24TMNAC-004).
§ Including: 26m at 36 g/t Ag, 0.20% Cu, 0.20% Zn from 45m downhole.
· 65m at 23 g/t Ag, 0.14% Cu, 0.27% Zn from 9m downhole (24TMNAC-005).
§ Including: 5m at 73 g/t Ag, 0.16% Cu, 0.31% Zn from 69m downhole.
· Drilling is expected to start within the next 2 weeks. All drill-related permitting is in place and a drilling contract has been signed. Access road and drill pad preparation is underway.
Richard Belcher, Managing Director of Tertiary Minerals plc, commented:
“We are delighted to be drilling again at Target A1. This drill programme has been designed to follow-up on the highly encouraging initial drilling undertaken here in late 2024.
“Previously announced results confirmed thick intervals of silver mineralisation commonly associated with zinc and/or copper over a width of 350m at the northern end of the anomaly. Many of these holes ended in mineralisation suggesting further depth potential. The programme will test the full extent of this anomaly over an area of approximately 1.5km by 0.3km and with additional deeper holes to test the depth potential.
“The Mushima North Project is located in the prospective Iron-Oxide-Copper-Gold region of Zambia and is only 20km east of the historic Kalengwa Mine which is currently under redevelopment. Target A1 is only one of several highly promising targets within the licence that warrants further investigation.
“I look forward to heading out to the Project for the drill programme and updating shareholders on the results of the drilling in due course.”
