Tertiary Minerals boosted as results confirm Mushima North potential

Mining Written by: Jamie Ashcroft 07:51 Tue 01 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 boosted as results confirm Mushima North potential Published: 07:51 01 Sep 2026 BST Tertiary Minerals PLC (AIM:TYM, OTC:TTIRF, FRA:TMU) said initial certified laboratory results from its Phase 4 drilling programme at Mushima North in Zambia have confirmed broad, near-surface silver-copper-zinc mineralisation, supporting the existing Exploration Target as the company works towards a maiden resource estimate this year. Among the first five holes analysed, Tertiary reported 66 metres grading 37 grams per tonne silver, 0.28% copper and 0.27% zinc from seven metres downhole, equivalent to 58 g/t silver. A further 73-metre intersection returned 45 g/t silver equivalent from nine metres, while 57 metres from 34 metres downhole graded 55 g/t silver equivalent. Results also reinforced a higher-grade zone within the Discovery Zone, including seven metres at 89 g/t silver equivalent from 81 metres and two metres at 107 g/t silver equivalent from 89 metres. The company also recorded its highest bismuth, antimony and cobalt grades to date, although it said the potential contribution from these accessory metals remains at an early stage of evaluation. Managing director Richard Belcher said the results “have not disappointed” and confirmed mineralisation within the company's Exploration Target of 15-30 million tonnes grading 40-60 g/t silver equivalent. Phase 4 comprised 39 holes totalling 3,639 metres, with further certified results expected over the coming weeks and initial metallurgical samples now submitted for testing. Continue reading