Key facts
| Company | Riverside Resources Inc. (TSXV: RRI) |
|---|---|
| Commodity | Gold |
| Location | Canada |
| Stage | Early exploration |
About Union Project
La Union Project is located in westerns Sonora approximately 30 km south of Caborca part of the orogenic gold trend and is within close proximity of major mines such as: Noche Buena, La Herradura and Cerro Colorado. La Union has only seen small-scale production dating back to the 1950s by Peñoles and local families. The Project has since been left unexplored until 2012, when Paget and Millrock started exploration work. High-grade rock chip samples taken by Paget and Millrock triggered Riverside’s attention to the project and in 2019, Riverside purchased the project as part of a five Mexico project portfolio acquisition.
News releases8 on file
RIVERSIDE RESOURCES INTERSECTS NEAR-SURFACE GOLD AND BASE METAL MINERALIZATION AT UNION NORTE AND ADVANCES MULTIPLE TARGETS FOR PHASE 2B DRILLING
Phase 2A drilling at the Union Project in northwest Sonora, Mexico returned 14.60 m of 0.45 g/t Au Eq from 1.0 m, including 4.60 m of 1.09 g/t Au Eq from 8.00 m, in hole UND26-015 at Union Norte, and 9.10 m of 0.76 g/t Au Eq from 1.90 m, including 1.5 m of 3.38 g/t Au Eq, in UND26-014. Seven holes totaling 530.1 metres were completed. An IP survey at Luis Hill outlined a chargeability anomaly over
Drill resultsRIVERSIDE RESOURCES AND QUESTCORP COMPLETE GEOPHYSICS PROGRAMS AND CONTINUE DRILLING AT LA UNION PROJECT
Aeromagnetic drone and induced polarization ground surveys have been completed at the La Union Project in Sonora, Mexico, operated by Riverside Resources with partner Questcorp Mining. The drone survey covered 248 km in total, comprising 145 flight lines totaling 193 km and 20 tie lines totaling 55 km, flown at 100 m line spacing; processed IP results from five lines are expected soon. Drilling is
Drill resultsRiverside Resources and Questcorp Announce Commencement of Phase 2 Drilling at Union Project, Sonora, Mexico
Phase 2 drilling has begun at the Union (La Union) Project in northwest Sonora, Mexico, operated by Riverside in partnership with Questcorp Mining Inc., which is earning into the project under a May 6, 2025 option agreement. The fully funded program comprises roughly 1,500 metres across 8 to 10 diamond drill holes averaging 180 metres deep, testing more than five target areas across the 25 km² pro
Drill resultsRiverside Resources and Questcorp Complete Expanded Aeromagnetic Drone Survey at La Union Project
An expanded aeromagnetic drone survey has been completed at the La Union Project in Sonora, Mexico, with partner Questcorp, adding 145 flight lines (193 km) plus 55 km in 20 tie lines for 248 km of total coverage at 100 m line spacing, building on the 2025 baseline dataset. The data will refine targets for a fully permitted summer 2026 drill program, with drill roads and pads under construction. A
Drill resultsRiverside Resources Reports High-Grade Gold, Silver and Base Metal Assays from Phase 2 Field Work at La Union Project
Phase 2 channel sampling at the La Union Project in Sonora, Mexico returned 2.9 m averaging 20 g/t gold and 1.83% zinc at the historical Union Mine, including 0.6 m at 91.7 g/t gold and a 0.3 m interval at 40% zinc. At Union Norte, 1.0 m graded 4.38 g/t gold, 1,413 g/t silver, 7.7% lead and 6.38% zinc. Three new target areas — Jabalí, La Negra and Ali Hill — were defined, with Phase 2 drilling sch
Drill resultsRiverside Resources and Questcorp Launch Phase 2 Exploration Program at La Union Project, Sonora, Mexico
A Phase 2 exploration program has begun at the La Union Project in Sonora, Mexico, funded by Questcorp, with teams mobilized across four main target areas for geological mapping, geochemistry, geophysics and a property-wide structural analysis. The work follows the 12-hole Phase 1 drill program announced January 22, 2026, which returned 42m grading 0.3 g/t gold at Luis Hill. An expanded aeromagnet
Drill resultsRiverside Resources and Questcorp Consolidate Key Mineral Concession for Union Project, Sonora, Mexico
Three mineral concessions in the Famosa Area of the Union Project in Sonora, Mexico — La Famosa, Dana 7 and Dana 7 (titles 199006, 220840, 220841, valid 1994-2044 and 2003-2053) — have been transferred from Pacific Comox S.A. de C.V. to Riverside's subsidiary RRM Exploración S.A.P.I. de C.V. following a final payment of US$125,000, completing an option from an August 2021 agreement for total consi
AcquisitionRiverside Resources and Questcorp Chip-Channel Sample High Grade Gold-Silver 30m @ 20 g/t Gold and 226 g/t Silver and Announce Drill Results from Union Project
Chip-channel sampling along the Union Mine decline wall at the La Union Project in Sonora, Mexico returned 30 m grading 20.2 g/t gold, 226 g/t silver and 2.7% Zn, with a 24 m subset averaging 25 g/t Au and 277 g/t Ag. Riverside and Questcorp also reported the final six holes of the 12-hole, 1,600 m Phase 1 program at Union Mine, Union Norte and El Cobre, which intersected CRD-style mineralization
Drill results