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LUSAKA - Tertiary Minerals plc (AIM:TYM) has commenced drilling at its Target A1 polymetallic prospect, part of the Mushima North Project in Zambia, according to a company statement Wednesday.
The approximately 1,000-meter reverse circulation drilling program aims to expand on previous promising results from mid-2025 drilling, which included intersections of 58 meters at 49 g/t silver, 0.26% copper and 0.16% zinc from 8 meters downhole.
Located 28 kilometers east of the historic Kalengwa copper-silver mine in Zambia's Iron-Oxide-Copper-Gold region, Target A1 currently has a surface footprint of approximately 450 by 400 meters, with mineralization identified to a vertical depth of 84 meters.
The drilling program is designed to test lateral extensions of known mineralization, particularly around high-grade silver and copper zones in the north, assess continuity between wider-spaced drill lines, and explore depth extensions up to 150 meters vertically.
"This work is aimed at bringing us closer to our goals of producing, in the short-term, an Exploration Target, as well as a maiden mineral resource in the next 12 months," said Richard Belcher, Managing Director of Tertiary Minerals.
The program is expected to be completed within two weeks, before the onset of heavy rains that would likely prevent further exploration until March-April 2026. Samples will initially be analyzed on-site using portable X-Ray Fluorescence for copper and zinc, with selected mineralized intervals sent to a certified laboratory for comprehensive analysis.
Tertiary Minerals holds the Mushima North Project through its 90%-owned subsidiary Copernicus Minerals Limited, with local partner Mwashia Resources Limited owning the remaining 10%.
The company noted that numerous other geochemical and geophysical targets at Mushima North remain untested.
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