Oreterra Metals Corp. (TSXV: OTMC) has concluded its Phase 1 drill program at the Trek South porphyry copper-gold prospect in British Columbia's Golden Triangle, announcing 13 holes totalling 4,500 metres across two zones. The program returned multi-hundred metre intercepts of porphyry-style alteration accompanied by visible copper minerals, while field work identified a new mineralised area designated Trek South 'C' Zone. Assay results are anticipated later in the fall of 2026, with planning for a Phase 2 program in 2027 already underway.

Key Points

  • Oreterra Metals Corp. (TSXV: OTMC | OTCQB: OTMCF | FSE: D4R0)
  • Phase 1 drilling at Trek South completed: 13 holes, 4,500 metres across 'A' Zone and 'Toe' Zone
  • Visible copper minerals including bornite, chalcopyrite, and chalcocite observed; assay results pending for fall 2026
  • Investors will be watching for assay results and Phase 2 program details for 2027

Trek South 'A' Zone Delivers Porphyry-Style Alteration and Copper Mineralisation

Three central holes — TS26-06, TS26-09, and TS26-10 — intersected multi-hundred metre zones of strong to intense porphyry-style alteration in the Trek South 'A' Zone. The alteration is accompanied by visually encouraging copper minerals, including bornite, chalcopyrite, chalcocite, malachite, and chrysocolla, ranging from trace amounts over several hundred metres to locally appreciable concentrations over tens of metres. The company states these three holes are believed to lie above an underlying source intrusion, which will be a primary target in the planned Phase 2 program. The presence of bornite and intergrown chalcocite is described as highly suggestive of a high-temperature magmatic porphyry source at depth.

New Trek South 'C' Zone Identified With Abundant Visible Copper Mineralisation

Field work on the east side of the Trek South glacier has delineated a new area of intensely altered boulders bearing what the company describes as some of the most abundant visible copper mineralisation seen on the property to date. Designated Trek South 'C' Zone, this discovery joins the previously identified 'B' Zone on the southwest side of the glacier, meaning strong porphyry-style alteration accompanied by visible copper mineralisation is now known to extend around almost the entire 1 km perimeter of the Trek South glacial basin. Planning to drill the 'C' Zone in 2027 is stated to be underway.

Trek South 'Toe' Zone Returns Visually Promising Chalcopyrite Intersections

Two short holes drilled on the Trek South 'Toe' Zone — believed to represent an Eskay Creek/VMS style of mineralisation — returned visually promising results, including multi-metre intersections of strong chalcopyrite mineralisation. Historical surface assays from the Toe Zone have previously returned high-grade copper, gold, silver, zinc, and antimony values, the release states. All assay results from the Phase 1 program remain pending, and the company notes that camp infrastructure and drill pads have been left in place to facilitate an earlier start and lower costs for the 2027 field season.

QA/QC Protocol and Qualified Person Oversight

Core samples are being processed by sawing in half, with half submitted to ALS facilities in Terrace and Vancouver for gold fire assay and multi-element ICP-MS analysis. Maximum sample length is 1.5 metres. A quality assurance and quality control programme incorporates alternating blanks, certified reference material standards, and duplicates at every tenth sample position. The technical content of the announcement has been reviewed and approved by John Biczok, P.Geo., Vice President of Exploration for Oreterra Metals Corp., acting as Qualified Person under National Instrument 43-101.