Teako Advances VMS Target Definition at Mostadmarka on the Venna Project

Executive Summary

• Teako Minerals reports laboratory analysis of 61 rock‑chip samples from the 2025 Mostadmarka sampling program, identifying three high‑priority VMS targets (Nævra, Heingruva, Storslåtten).
• Geochemical signatures show elevated sulfur, base metals (Cu + Pb + Zn up to 305 ppm), and pathfinder elements (As up to 59 ppm, Sb up to 6.16 ppm) indicating hydrothermal activity and potential buried massive sulfide mineralisation.
• The previously identified Sandsve high‑grade Cu occurrence (2.5 % Cu) lies adjacent to the Storslåtten target, suggesting a possible connection to larger VMS systems.

Key Details

• Sampling Overview: 61 rock‑chip samples – 18 from oxide‑facies iron formations (jasper, magnetite chert) and 11 from sulfide‑facies horizons (“Vasskis”).
• Nævra Target: 11 oxide samples over ~1.2 km strike; sulfur up to 2.62 %, Cu + Pb + Zn up to 305 ppm, As up to 59 ppm, Sb up to 6.16 ppm; Al₂O₃ average 2.59 %; interpreted as hydrothermal replacement over exhalative processes.
• Heingruva Target: Two sulfide samples show positive Eu anomalies (hot hydrothermal vent indicator); lower Al₂O₃ (~0.51 %) suggesting more “pure” exhalative lithology.
• Storslåtten Target: Four sulfide samples exhibit elevated As, Sb, Ag, Mo, Tl, K; high pXRF SiO₂ (proxy for quartz veining) and lower Light REE vs. other Vasskis samples; associated with ~2.2 km airborne EM (FDEM) anomaly.
• Sandsve Occurrence: High‑grade Cu mineralisation (SANDSVE‑2 @ 2.5 % Cu) located west of Storslåtten, potentially linked to buried massive sulfide bodies.
• Host Rock Characterisation: Ironworks trend hosted by basaltic‑to‑basaltic‑andesite lavas and volcaniclastics from an enriched mantle source (upper Mostadmarka Formation); southern magnetic trend underlain by MORB‑type volcanics (lower Mostadmarka Formation).
• Next Steps: Further data review, comparison with known VMS deposits (e.g., Løkken mine), higher‑resolution geochemical sampling and additional surveys to refine drill targets.
• QA/QC: Samples analysed by ALS Laboratories (Sweden) using ICP‑MS, AES, LOI; laboratory ISO 9001:2015 & ISO/IEC 17025:2017 accredited.
• Qualified Person: Eric Roth, Ph.D., Non‑Executive Director, QP under NI 43‑101, approved the technical information.

Notable Quotes

• “The identification of three high‑priority VMS targets within Mostadmarka provides a compelling basis for follow‑up exploration and potential drill programs,” – Sven Gollan, CEO, Teako Minerals Corp.