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Riverside Resources Intersects Near-Surface Gold and Base Metal Mineralization at Union Norte and Advances Multiple Targets for Phase 2B Drilling

RVSDF
  • Riverside Resources Inc. announced positive assay results from Phase 2A summer 2026 core drilling at the Union Project in northwest Sonora, Mexico.
  • The program, conducted in partnership with Questcorp Mining Inc., intersected gold-zinc mineralization & expanded on past mining targets.
  • Seven holes totaling 530.1 metres were completed, with drilling paused due to the monsoon season until Phase 2B resumes in early October 2026.
  • Hole UND26-015 at Union Norte returned 14.60m of 0.45 g/t Au Eq from 1.0m, including a higher-grade interval of 4.60m grading 1.09 g/t Au Eq.
  • Hole UND26-014 at Union Norte returned 9.10m of 0.76 g/t Au Eq from 1.90m, including a high-grade subset of 1.5m grading 3.38 g/t Au Eq.
  • Hole UND26-013 at Union Mine intersected continuity of the historic Sproul manto with anomalous lead & zinc values indicating proximity to the replacement body.
  • Induced Polarization surveys at Luis Hill delineated a large chargeability anomaly extending over 1km in strike, supporting sediment-hosted gold targets.
  • Hole UND26-017 at Jabali identified elevated arsenic values indicative of proximity to a feeder zone similar to Union Norte.
  • Significant faulting slowed core recovery, prompting the evaluation of reverse-circulation drilling for the upcoming Phase 2B campaign.
  • CEO John-Mark Staude noted that grades above 0.5 g/t are significant in the region & confirmed two main target areas for continued drilling.
  • QA/QC protocols were followed with no failures identified in certified reference materials, field duplicates, or blanks.
  • Future drilling plans include expanding Union & Union Norte targets, along with follow-up work at Luis Hill sediment-hosted & Jabali vein targets.