Union Project Drilling Advances in Mexico for Riverside and Questcorp

Union Project Drilling On Track with Promising Early Indicators

Riverside Resources Inc. (TSXV: RRI) and Questcorp Mining Inc. (CSE: QQQ) continue drilling progress at the Union Project in Sonora, Mexico. The program remains on schedule and within budget, with initial holes drilled at three of five main targets. Key formations, including Clemente and Caborca, have been intersected beneath historic workings.

The first hole at the Union Mine target reached the mineralized Caborca Formation. Samples were sent to Bureau Veritas for fire assay and ICP-MS analysis. This standardized testing ensures consistency across all phases of the program. Drilling has since expanded to the El Cobre and North Union Mine targets, where structural zones and quartzite units show potential for oxidized and possibly sulfide-associated gold.

According to Riverside CEO John-Mark Staude, the geological data is already enhancing the exploration model. The team has shifted south to the highly prospective Famosa target, where historical grades reportedly exceeded ½ oz/ton gold. Two initial holes will test beneath old workings and along a fault structure critical to mineralization controls.

Famosa Target and Structural Insights Drive Next Drilling Steps

Drilling at Famosa will probe both sides of a key fault trending north-south and dipping steeply west. The structure, combined with favorable host rocks, mirrors conditions seen at past-producing sites in the district. Historic mining focused only on oxide zones, leaving sulfide potential untapped.

Preliminary results show quartzite-rich intervals in the Clemente Formation, suggesting quartz-pyrite veinlet systems may host gold. This discovery shifts the targeting model toward fracture-controlled mineralization. Riverside and Questcorp will integrate assay results, structural logging, and upcoming IP surveys to refine drill targeting.

All core has been logged, saw-cut, and split, with samples sent for lab analysis and the remainder retained for reference. The companies anticipate assay results soon and will continue exploration updates. Riverside also highlights its strong financials, no debt, and a broad portfolio of gold, silver, and copper assets across North America.

SuperMetalPrice Commentary:

The Union Project’s steady drilling progress underscores growing interest in Sonora’s underexplored gold systems. Riverside and Questcorp’s methodical approach—combining historic data, structural mapping, and modern assays—strengthens their position in a region with proven potential. Early geological signs at Famosa and quartzite-rich formations at North Union suggest untapped sulfide-hosted mineralization. As exploration deepens and assays arrive, Union may emerge as a key gold-silver project in northern Mexico. The companies’ financial discipline and technical strategy position them well for continued discovery and potential partnership opportunities.