Viridian sees plumbing network, chemical traps at Sedna

Executive Summary

• Viridian Metals confirms a basin-scale plumbing system and copper-bearing chemical traps at its Sedna Project in Labrador, Canada, based on newly acquired magnetotelluric (MT) data and surface mapping.
• The company has identified a deeply rooted, crustal-scale network of north-south structural breaks acting as fluid highways, intersecting with laterally extensive east-west corridors and reduced stratigraphic horizons capable of trapping copper.
• The discovery of widespread, fine-grained disseminated chalcopyrite mineralization explains previous oversight by historical exploration and supports the potential for a major sediment-hosted copper district rather than a single deposit.

Key Details

• Geological Architecture: Integration of MT data and surface mapping defined the geological architecture of the Seal basin, comparable to major sediment-hosted copper districts globally.
• Plumbing System: MT data imaged deeply rooted, north-south-oriented structural breaks interpreted as primary highways for transporting copper-rich fluids from depth.
• Structural Corridors: Surface mapping and satellite imagery identified laterally extensive east-west structural corridors traceable for over 100 kilometres at surface.
• Copper Traps: Delineated copper-bearing reduced horizons extending over tens of kilometres at favourable stratigraphic levels, acting as laterally extensive reductant traps.
• Mineralization Style: Discovery of fine-grained, disseminated chalcopyrite (copper) not visible in hand specimen, characteristic of large sediment-hosted systems and previously overlooked.
• Project Scale: Sedna project covers greater than 2,600 square kilometres, securing the majority of the Seal basin, making it one of the largest contiguous exploration projects in Canada.
• MT Survey Specifications:
  • Conducted by Moombarriga Canada Inc. in fall 2025.
  • Used Phoenix instrumentation over a frequency range of 10,000 to 0.001 hertz.
  • 71 MT stations acquired across the Seal basin.
  • 2-D and 3-D inversions performed using Viridien (formerly CGG) RLM3D inversion algorithm.
  • Preferred 3-D inversion model achieved a normalized root-mean-square (nRMS) misfit value of approximately 1.6.
• Next Steps:
  • Initiated permitting for access infrastructure (trail and central staging area) focusing on the Kendall target area (copper-bearing structure traced over ~600 metres of strike length).
  • Defining technical assumptions for a basin-scale airborne geophysical survey to trace reduced stratigraphic horizons and identify intersections with major plumbing structures.
• Correction to Equity Incentive Disclosure: Clarification that Performance Share Units (PSUs) and Restricted Share Units (RSUs) granted in a Feb. 5, 2026 release have a vesting term of two years, with 50% vesting on Feb. 5, 2027, and Feb. 5, 2028.

Notable Quotes

• "We have moved from a theoretical model to a proven framework... By confirming both the deep-rooted plumbing systems and the extensive copper-bearing horizons, we have significantly derisked the project. We aren't just looking for a single deposit. We are uncovering an entire copper district." — Tyrell Sutherland, President and CEO