Tertiary Minerals extends Mushima North mineralisation at depth

Mining Written by: Jamie Ashcroft 07:28 Mon 07 Sep 2026 --> Proactive has a commercial relationship with Tertiary Minerals PLC. This article was produced independently under Proactive's Editorial Standards Policy . Disclaimer No investment advice About this content Editorial Standards & Policies Share article About this content × About Jamie Ashcroft Jamie Ashcroft, the News Editor for Proactive UK, has developed an impressive career in financial journalism, focusing on the small-cap sector for over fourteen years. Before joining the Proactive team, he was a stockbroker during the global financial crisis, a role that complemented his educational background - a first-class degree in Business and Economics and qualifications in software design and development. As one of the early external hires at Proactive in 2009, Jamie contributed... Read more About the publisher Proactive financial news and online broadcast teams provide fast, accessible, informative and actionable business and finance news content to a global investment audience. All our content is produced independently by our experienced and qualified teams of news journalists. Proactive news team spans the world’s key finance and investing hubs with bureaus and studios in London, New York, Toronto, Vancouver, Sydney and Perth. We are experts in medium and small-cap markets, we also keep our community up to date with blue-chip companies, commodities and broader investment stories. This is content that excites and engages motivated private investors. The team delivers news and unique insights across the market including but not confined to: biotech and pharma, mining and natural resources, battery metals, oil and gas, crypto and emerging digital and EV technologies. Use of technology Proactive has always been a forward looking and enthusiastic technology adopter. Our human content creators are equipped with many decades of valuable expertise and experience. The team also has access to and use technologies to assist and enhance workflows. Proactive will on occasion use automation and software tools, including generative AI. Nevertheless, all content published by Proactive is edited and authored by humans, in line with best practice in regard to content production and search engine optimisation. Tertiary Minerals PLC ( AIM:TYM OTC:TTIRF ) View Price & Profile Tertiary Minerals extends Mushima North mineralisation at depth Published: 07:28 07 Sep 2026 BST Tertiary Minerals PLC (AIM:TYM, OTC:TTIRF, FRA:TMU) said new drilling at its Mushima North project in Zambia has extended silver-copper-zinc mineralisation beyond the depth of its existing Exploration Target, with most of the seven newly reported holes ending in mineralisation. The Phase 4 results included 82 metres grading 53 grams per tonne silver equivalent from just 7 metres downhole, alongside 67 metres at 51 g/t AgEq from 19 metres and 46 metres at 63 g/t AgEq from 8 metres. Drilling also reinforced a higher-grade zone, including 22 metres at 105 g/t AgEq from 64 metres. Two further intervals returned 12 metres at 104 g/t AgEq and 11 metres at 110 g/t AgEq. Managing director Richard Belcher said the results “continue to increase our confidence on the extent and continuation of grade” within the Discovery Zone. He added that holes ending in grade had pushed the known mineralisation beyond the previous Exploration Target envelope, while its full depth and possible transition from oxide into sulphide mineralisation remain untested. The Discovery Zone has a JORC-compliant Exploration Target of 15-30 million tonnes at 40-60 g/t silver equivalent. Phase 4 comprised 39 reverse-circulation holes totalling 3,639 metres, with results from 12 holes now released and further laboratory assays expected over the coming weeks. Continue reading