Cerro Leon MRE increases to162 Moz AgEq

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Stock Unico Silver Ltd (USL.ASX)
Release Time 23 Sep 2025, 9:21 a.m.
Price Sensitive Yes
 Cerro Leon MRE increases to162 Moz AgEq
Key Points
  • Substantial increase to global mineral resources, now 162 Moz AgEq
  • Maiden oxide resource exceeds PLUS 150 Exploration Target
  • High-grade mineralisation is open at depth and along strike at multiple prospects
Full Summary

Unico Silver reports an updated JORC (2012) Mineral Resource Estimate (MRE) for the Cerro Leon project in Argentina, which now stands at 31 Mt at 161 g/t AgEq for 162 Moz AgEq. This represents a 73% increase in ounces from the previous MRE in May 2023. The updated MRE is underpinned by 20,456 m of new drilling completed during 2024-2025, with a discovery cost of USD 10c per AgEq ounce. The free-milling (oxide and transitional) resources now total 8.1 Mt at 171 g/t AgEq for 45 Moz AgEq, exceeding the previous PLUS 150 Exploration Target. Over 67% of these free-milling ounces are in the Indicated category, supporting early-stage feasibility work. Mineralisation remains open at depth and along strike at multiple prospects within the Cerro Leon and adjoining Pinguino-Sierra Blanca properties. The combined MRE for Cerro Leon represents an 88% increase in tonnes and 73% increase in silver equivalent ounces compared to the previous resources.

Guidance

Unico Silver is targeting a global resource of over 250 Moz AgEq across the Cerro Leon and Joaquin projects, with an upcoming MRE for Joaquin expected shortly.

Outlook

Unico Silver is advancing the Cerro Leon and Joaquin projects towards development, with a maiden Scoping Study planned following the latest resource update. The company is also pursuing a longer-term BEYOND 300 strategy to build a global silver resource exceeding 300 Moz AgEq.