Neoterrex samples 12.87% TREO at Revolver

Executive Summary

• Neoterrex Minerals Inc. released assay results from its 2025 summer exploration program at its 100%-owned Revolver rare-earth elements (REE) project in Quebec.
• The program identified a high-grade grab sample (L809607) returning 12.87% total rare-earth oxides (TREO), including 2.10% neodymium oxide (Nd2O3) and 0.44% dysprosium oxide (Dy2O3).
• Exploration has extended mineralized zones identified in 2024, with seven grab samples returning >1% TREO over a 400m x 100m area, suggesting a structurally controlled, syenite-hosted REE system.

Key Details

• High-Grade Sample (L809607):
  • 12.87% TREO
  • 2.10% Neodymium Oxide (Nd2O3)
  • 0.40% Praseodymium Oxide (Pr2O3)
  • 0.44% Dysprosium Oxide (Dy2O3)
  • 0.32% Erbium Oxide (Er2O3)
  • Collected from a coarse-grained, metasomatized unit within a quartzolite containing visible monazite, xenotime, and zircon.
  • Rock exhibits strong fenitic alteration (biotite and potassium feldspar) with nearby syenite.
• General Sample Results:
  • Five samples returned values exceeding 1% TREO.
  • A total of 49 grab samples were obtained from the project.
  • Seven grab samples in total returned more than 1% TREO over an area measuring approximately 400 metres by 100 metres.
• Geological Context:
  • REE mineralization is primarily hosted in monazite.
  • Features suggest a structurally controlled, syenite-hosted REE system comparable to other high-grade occurrences in the region.
  • Regional magnetic and radiometric anomalies support the findings.
• Future Work & Infrastructure:
  • Due to overburden cover, mechanical stripping and trenching are required to evaluate the full extent of mineralization.
  • Neoterrex has initiated mineralogical and metallurgical testwork.
  • Next phase includes targeted geophysical surveys, mechanical stripping, trenching, and initial drilling over prospective areas delineated in 2024-2025.
  • Project is located 39 km from the Niobec mine and 35 km from Saguenay, with access to road networks, power, and skilled labor.
• QA/QC:
  • Analyses performed by ALS Canada Ltd. in Vancouver, BC.
  • Methods used: ME-MS71L and OGREE.
  • Monitoring elements: Ce, Dy, La, Nd, Pr, and Y.
  • Blanks and certified reference materials (OREAS 460) were inserted among samples.

Notable Quotes

• "We are very pleased with the results from our ongoing exploration at the project, particularly within the western portion of the project where the 12.87 per cent TREO sample ranks among the highest rare-earth grades reported in Quebec according to government databases (Sigeom). We are also encouraged that the mineralization not only includes significant neodymium oxide (2.1 per cent) but also dysprosium oxide (0.44 per cent), a heavy rare-earth, and all hosted in monazite - a mineral known for its favorable metallurgical properties for rare-earth extraction." — Mathieu Stephens, President and CEO