Sonoro Gold Corp. (TSXV: SGO | OTCQB: SMOFF | FRA: 23SP) has released assay results from 26 additional drill holes at its flagship Cerro Caliche gold project in Sonora, Mexico, expanding confirmed higher-grade gold mineralization across two distinct zones. The company has now completed 72 drill holes over 14,086.35 metres as part of an ongoing 50,000-metre campaign. Results from both the Diana concession and the newly identified La Colorada zone indicate the project may host multiple gold-bearing corridors, a development investors in junior gold explorers may find significant.

Key Points

  • Sonoro Gold Corp. (TSXV: SGO | OTCQB: SMOFF | FRA: 23SP) announced new drill results from Cerro Caliche on October 1, 2026
  • 26 additional holes returned higher-grade intercepts at both the Diana concession and the newly identified La Colorada mineralized zone
  • Standout results include SCR-391 intercepting 32.00m at 1.846 g/t Au, including 4.57m at 10.430 g/t Au, and SCR-396 intercepting 47.24m at 1.552 g/t Au
  • Investors may watch for a future updated mineral resource estimate incorporating these results

Diana Concession Confirms Shallow Higher-Grade Gold at Cerro Caliche's Northern Extension

Fourteen reverse circulation drill holes were completed at the Diana concession, located north of the Rincón–Bellotoso mineralized zone. Ten of the 14 holes returned multiple intercepts exceeding 1 g/t Au over 1 metre. Results demonstrate gold mineralization extending southeast across the Bellotoso Plateau and northwest toward the historic El Batamote mine workings. The company stated that detailed analysis of historical geological data, combined with current drilling, supports continuity of northwest-trending structural and rhyolite-hosted mineralized corridors into the recently acquired northern concessions. The release notes additional drilling is required to fully define the Diana zone and several identified mineralized structures.

La Colorada Emerges as a Newly Identified Mineralized Zone 300 Metres West of Proposed Open Pit

Twelve RC drill holes at La Colorada, located approximately 300 metres west of the company's proposed open-pit, heap leach mining operation area outlined in its Preliminary Economic Assessment dated April 24, 2026, outlined a new northwest-trending mineralized zone. The zone is characterised by rhyolitic dikes, structurally controlled breccias, and numerous historical mine workings. Four holes returned intercepts above 1 g/t Au over 1 metre, including SCR-378, which intercepted 6.10m at 2.261 g/t Au. The structural complexity of the La Colorada area is described in the release as similar to the nearby El Colorado zone, suggesting potential interconnection between multiple mineralized structures.

Cerro Caliche Drill Campaign Supports District-Scale Epithermal Gold System Hypothesis

President and CEO Kenneth MacLeod stated in the release that higher-grade intercepts at Diana validate the company's decision to expand the project's northern extension and support the hypothesis that Cerro Caliche is likely part of a larger gold epithermal system with district-scale potential. The company reported no QA/QC issues with analytical results from laboratories involved, with assays conducted by Bureau Veritas. The drill results are described as exploration results only and do not constitute an updated mineral resource estimate; the company states results will be incorporated into the geological model for a future resource estimate update under NI 43-101.