Goldcliff see Panorama testwork return 88% Au recovery

Executive Summary

• Goldcliff Resource Corp. confirmed that metallurgical testwork by Dundee Sustainable Technologies indicates gold mineralization at the Panorama Ridge project may be amenable to the patented Clevr non-cyanide gold recovery process.
• Initial testing of York zone drill core achieved an 88% gold recovery rate using the Clevr process with thermal oxidation pretreatment, prompting management to continue evaluating this environmentally responsible processing option.
• The Clevr process features a closed-circuit, zero-effluent design producing inert, non-acid generating residue, potentially offering lower environmental risk and a reduced surface footprint compared to conventional cyanide methods.

Key Details

• Recovery Results: Testing of York zone drill core achieved 88% gold recovery using the Clevr process with thermal oxidation pretreatment.
• Sample Composition: Six samples from the York zone, grading from 0.2 g/t Au to 2.5 g/t Au and spanning two lithologies, were crushed and blended into a composite grading 0.74 g/t Au.
• Pre-treatment Data: Following thermal oxidation, the composite tested at 0.71 g/t Au.
• Process Duration: One hour of Clevr leaching was required to record the 88% gold recovery.
• Environmental Benefits: The Clevr process is a closed-circuit, zero-effluent design. The solid residue is inert, sulphide depleted, and non-acid generating.
• Toxicity Testing: A toxicity characteristic leaching procedure (TCLP) on the residue confirmed all monitored elements were below TCLP thresholds.
• Future Work: Dundee recommended additional laboratory work to better define material concentration behavior, pretreatment requirements, and gold recovery characteristics. Goldcliff anticipates continued collaboration with Dundee.
• Technical Oversight: Paul Saxton, PEng, qualified person as defined by National Instrument 43-101, supervised the preparation and verification of the technical information.