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Phase 1 Metallurgical Results Show Broad Cyanide Response at Volcan
Vancouver, British Columbia--(Newsfile Corp. - July 2, 2026) - Tiernan Gold Corp. (TSXV: TNGD) ...
About this update from Tiernan Gold Corp
Phase 1 Metallurgical Results Show Broad Cyanide Response at VolcanVancouver, British Columbia--(Newsfile Corp. - July 2, 2026) - Tiernan Gold Corp. (TSXV: TNGD) ("Tiernan" or the "Company") announces results from Phase 1 diagnostic leach and gold deportment results from 36 variability samples from the Company's Volcan Gold Project ("Volcan" or the "Project"), located in the Maricunga Gold Belt, Atacama Region, Chile.The Phase 1 program was designed to characterize gold deportment and cyanide solubility across multiple grade ranges and sample groups. The work provides an initial metallurgical dataset that will guide the next phase of testwork supporting the Company's ongoing permit engineering and Pre-Feasibility Study ("PFS") workstream.Combined Stage 1 and Stage 2 cyanide-soluble gold distribution averaged 75.1% across the 36 samples, with a median of 78.3% and a range of 42.3% to 92.8%. The higher-grade sample groups returned average combined cyanide-soluble gold distributions of 77.8% and 81.0%, respectively. These results are diagnostic test results and should not be interpreted as projected heap leach recoveries.Highlights from the Phase 1 diagnostic leach program include:36 variability samples tested across a number of grade profiles, with assay head grades ranging from 0.30 g/t Au to 3.23 g/t Au.Combined Stage 1 and Stage 2 cyanide-soluble gold distribution averaged 75.1% and returned a median of 78.3% across all samples.Higher-grade samples averaged 77.8% and 81.0% combined cyanide-soluble gold distribution.Stage 1 cyanide leaching accounted for an average of 64.0% gold distribution, while Stage 2 added an average of 11.1%, providing useful information on leach kinetics and the portion of gold requiring additional leach intensity or duration.A minority of samples returned lower cyanide-soluble gold distributions. These samples are being reviewed against geological, alteration and mineralogical data to determine whether they represent discrete metallurgical domains requiring specific treatment in Phase 2 testwork and PFS recovery modelling."These Phase 1 results give us a useful first read on how gold behaves across the Volcan deposit," said Fausto Di Trapani, President and CEO, "The key point is that gold is responding to cyanide across the grade ranges tested, with the higher-grade material showing the strongest average response. Just as importa...