Anteros Metals Announces Plans for a Phase 1 Extension Drilling Program at the Seagull Critical Minerals Project, Ontario

Executive Summary

• Anteros Metals announced an addendum to its option agreement with Rift Minerals, granting it the right to conduct a Phase 1 extension drilling program at the Seagull Critical Minerals Project.
• The proposed extension will target orthomagmatic sulphide mineralization (Ni‑Cu‑PGE) and a gas‑bearing interval identified in drill hole RM26-01 (~877 m depth).
• Drilling will leverage existing historic drill infrastructure to manage cost, time, and surface disturbance; final program design remains subject to budgeting, field conditions, and financing.

Key Details

• Addendum Rights: Anteros may conduct a revised Phase 1 extension drilling program; expenditures can be credited against potential Phase 2 exploration costs if the company proceeds after an updated NI 43‑101 technical report.
• Operator Continuity: Rift Minerals will remain the operator for any extension drilling.
• Recent Drill Results (RM26-01):
• Intersected discontinuous orthomagmatic sulphide mineralization between ~589 m and 608 m depth in the basal cumulate sequence.
• Encountered a gas‑bearing interval at ~877 m within a narrow fault zone; similar gas occurrence previously reported in hole WM‑01‑08 (~100 m away).
• Laboratory assay results for sulphide intervals are pending.
• Technical Objectives of Phase 1 Extension:
  1. Evaluate orthomagmatic sulphide mineralization associated with Ni‑Cu‑PGE systems at the basal contact of the Seagull Intrusion.
  2. Test the ~877 m elevation to assess presence and geological context of gas within a sub‑horizontal structural feature.
  3. Collect samples for laboratory analysis to support evaluation of sulphide mineralization and gas occurrence.
• Drilling Strategy: Plan to use existing historic drill holes as platforms for extension drilling, aiming to reduce surface disturbance and cost while accessing deep target horizons.
• Integrated Interpretation: Rift has combined drilling data with Ambient Noise Tomography (ANT) velocity modelling to refine the geometry of the Seagull Intrusion and underlying basement; interpretations are preliminary and subject to revision.
• Financing Note: Execution of the Phase 1 extension is contingent upon final program design, field conditions, and availability of financing.
• Quote: “The Phase 1 extension represents a logical next step to build on observations from drill hole RM26‑01… By leveraging existing drill holes, we are able to further evaluate these features and advance our technical understanding of the Seagull Critical Minerals system,” – Trumbull Fisher, CEO, Anteros Metals Inc.

Notable Quotes

• “The Phase 1 extension represents a logical next step to build on observations from drill hole RM26‑01, including the occurrence of gas and basal sulphide mineralization,” said Trumbull Fisher, CEO of Anteros.