Riverside Resources Inc. (TSX-V: RRI) (OTCQB: RVSDF) (FSE: 5YY0) has announced, with partner Questcorp Mining Inc. (CSE: QQQ) (OTCQB: QQCMF) (FSE: D910), the completion of expanded geophysical programs at the La Union Project in Sonora, Mexico. The programs, which include an aeromagnetic drone survey and an Induced Polarization (IP) ground geophysics survey, are now linked to the current drilling campaign.
Aeromagnetic and IP Surveys Completed
The aeromagnetic drone survey has been completed, and processed data has been received, allowing integration into the ongoing summer core drilling program. The IP ground survey is also finished, with processed results expected soon. This data will build on current drill targets and is anticipated to identify expansions and additional targets, consistent with robust H1 2026 exploration efforts.
The geophysics can be applied immediately to the active drill program, which has focused on three areas: Union, Union North, and Jabali. The IP data covering these areas is being used to interpret results from completed drilling and to expand targets along strike and at depth. Initial work relied on surface mapping, geochemistry, and past mine activity; the new dataset places the project's discovery potential in a larger regional context.
Program Highlights
- IP program completed and extended over current drilling and into new mapped target areas
- Drilling completed at Union and Union North targets
- Actively drilling the Jabali target
- Aeromagnetic drone survey: final report received for 145 flight lines totaling 193 km, plus 20 tie lines totaling 55 km, for 248 km of total coverage. The survey builds on the 2025 baseline dataset, flown at 100 m line spacing for high-resolution definition, revealing good targets
- Cross structures trending NE and NW potentially coincide with mapped feeder fault zones for Carbonate Replacement Deposit (CRD) and sediment-hosted gold
- Relating outcropping diorite bodies into a larger context for potential scale and relationship to known gold-zinc mineralized areas at Union
- Improved imaging of structures beneath post-mineral cover, including new NW trending structures identified by spring 2026 field mapping as potential ore controls, creating new untested targets
CEO Comments on Progress
“With the IP survey now complete, combined with the processed aeromagnetic data, we have an expanded view of the Union Project’s targets and structural framework, both at depth and along strike from current drilling,” said John-Mark Staude, President and CEO of Riverside Resources Inc. “Our teams are in the field continuing Phase 2 drilling, and this data is immediately helping us expand targeting and prioritize the project’s robust set of targets. The program is going well, and our teams are processing drill core and sending samples to the laboratory for assays. We’re also now using the new geophysics to put our surface geology observations into a mineralization targeting context, helping focus our efforts toward discovering high-grade gold and base metals similar to what was previously mined here, now with geophysics to help image potential source targets at depth.”
