Kalo Gold uses detectORE screening at Vatu Aurum

Executive Summary

• Kalo Gold Corp. has adopted the detectORE gold screening system at its Vatu Aurum project in Fiji to enhance drill targeting and accelerate on-site workflow.
• An internal 2025 validation study of 824 samples demonstrated a strong linear correlation between detectORE units (dU) and certified fire assay gold results, with Pearson correlation coefficients (R) of 0.98 for drill core and 0.96 for trench samples.
• The technology allows for real-time sample screening to prioritize follow-up and update geological interpretations dynamically, though certified fire assay remains the basis for all reportable drill results under NI 43-101.

Key Details

• Technology Adoption: Implementation of detectORE, a field-based geochemical technology developed by Portable PPB Pty. Ltd., for rapid on-site gold screening of rock, trench, core, and soil samples.
• Validation Study Scope: Analysis of 824 total samples, comprising 751 drill core samples and 73 trench samples, selected to cover a range of mineralization styles, gold values, and sample conditions.
• Correlation Metrics (Pearson R):
  • Total drill core (751 samples): R = 0.98
  • Total trench samples (73 samples): R = 0.96
  • Oxidized samples (364 samples): R = 0.98
  • Fresh/unoxidized samples (348 samples): R = 0.94
• Methodology:
  • Uses proprietary GLIX-20 reagent system to leach gold from fine-grained samples.
  • Gold is adsorbed onto a proprietary collector device and measured using a calibrated portable X-ray fluorescence analyzer (Evident Vanta, model V2MR).
  • Results reported in detectORE units (dU), a semi-quantitative screening estimate on a part-per-billion-equivalent scale.
• Quality Assurance:
  • Data tracked and managed through Portable PPB's pLIMS system.
  • Includes real-time monitoring of sample mass, moisture content, and pXRF calibration.
  • Verification via certified reference materials, blanks, duplicates, and calibration collector devices.
  • Batch review and reprocessing triggered by any failure.
• Reporting Standards:
  • Certified fire assay results remain the basis for reportable drill results under National Instrument 43-101.
  • detectORE data is disclosed as preliminary/supplementary information.
  • dU results are not used to estimate mineral resources or reserves.
• Qualified Person: Andrew Randell, PGeo, Technical Director, reviewed and approved the technical information.

Notable Quotes

• "detectORE has materially improved our on-site workflow due to its linear correlation to certified fire assay gold results... It allows our team to screen samples on site in real time and prioritize follow-up while certified laboratory assays are pending." — Terry Tucker, PGeo, CEO of Kalo Gold.