J2 Metals grab samples silver, gold at Sierra Plata

Executive Summary

• J2 Metals Inc. reported high-grade silver and gold grab sample results from waste dumps at the El Sabino and San Miguel historical mines within its Sierra Plata project in Mexico.
• The results confirm the high-grade nature of the epithermal system, with specific samples returning up to 3,100 g/t Ag and 12.8 g/t Au.
• A second sampling program targeting the eastern unmapped portion of the property has been completed, with results pending, while immediate next steps include mapping, geochemistry, and geophysics.

Key Details

• Transaction Context: J2 Metals announced on Dec. 22, 2025, that it had acquired the option to acquire 100% of the Sierra Plata silver-gold-antimony project in Taxco, Mexico, from Impact Silver Corp. The project covers 2,200 hectares and hosts five past-producing silver-gold mines.
• Site Visit: On Dec. 10, 2025, CEO Thomas Lamb, VP Exploration Graham Giles, and Director Simon Clarke conducted a technical and commercial due diligence site visit, meeting with Impact Silver’s local team.
• Sample Results (El Sabino and San Miguel Waste Dumps):
  • Grab samples from quartz vein material confirmed strong precious metal endowment.
  • Specific highlight: Sample K074324 returned 3,100 grams per tonne silver and 12.8 g/t gold, equating to 60.49 g/t gold equivalent.
  • Samples consisted of fine-grain argentite-hosted within quartz veins.
• Second Sampling Program:
  • Targeted the eastern unmapped portion of the property, specifically possible southern extensions of mapped north-south-trending veins from the neighboring Pantera project.
  • 28 samples were collected and sent for rush analysis at ALS Labs Zacatecas.
  • Observed vein textures included crustiform, banded, coke, and blade varieties within various quartz types (white, grey, amethyst, chalcedonic).
  • Alteration noted includes argillic illite-smectite, illite-kaolinite, and jarosite-hematite iron oxides.
• Geological Interpretation: Widespread argillic alteration and historical mining are consistent with a robust epithermal vein system, suggesting potential for bonanza-grade mineralization at depth.
• Future Plans: Immediate next steps include extensive follow-up mapping, geochemistry, and magnetic geophysics. A second sampling program is complete, and discussions with geophysics contractors are underway. Drilling is planned as soon as possible.
• Technical Review: Information reviewed by Graham Giles, PGeo, a qualified person under National Instrument 43-101.
• Disclaimer: Samples are selective grab samples from historic waste dumps and are not necessarily representative of average grades or bulk tonnage.

Notable Quotes

• Thomas Lamb, CEO: "As part of our due diligence into our transaction with Impact Silver, we conducted a site visit. The grades found in the waste piles at the El Sabino and San Miguel mines are highly encouraging... For obvious reasons, we will be advancing exploration in and around these past-producing mines as soon as possible."
• Graham Giles, VP Exploration: "Samples at both locations consisted of fine-grain argentite-hosted within quartz veins. Original widths of these veins are not known, but they speak to the high-grade nature of the system and we are looking forward to drilling these structures as soon as possible."