SONORO REPORTS GOLD MINERALIZED TARGETS IN NORTHWEST REGION OF CERRO CALICHE AS POTENTIAL RESOURCE EXPANSION - Seite 2

Potential expansion of the Cerro Caliche’s resource will be discussed at an upcoming live webinar scheduled for Thursday, July 13, 2023 at 8am PST (11am EST). Click here for more information.

Surface sampling methods consisted of continuous chip sampling perpendicular across measured veins and wall rocks. Within the Northwestern Corridors Area, the Company has completed 608 samples with sample lengths of 1.0 to 2.0 meters and assays grades of up to 24.8 grams of gold per tonne (“g/t Au”). Within the same area, the Company completed 27 previously announced drill holes as part of its Phase 3 exploration program concluded in April 2021.

The host rock is the Tertiary age rhyolite sill with strong silicification and minor argillic alteration. A common characteristic of low-sulfidation epithermal mineralization in structures is increased gold at higher elevation levels within the boiling zones and increased silver at lower elevation levels within the boiling zones. Drilling will target the oxide gold mineralized northwestern corridors where favorable boiling textures and rock type for mineralization suggest possible higher gold grades and possibly greater vertical extent.

Figure 2 below illustrates the four corridors within the Northwestern Corridors Area and identifies samples with gold mineralization greater than 3.0 g/t Au. Silver values for the area are not shown but average silver mineralization is 16 grams of silver per tonne (“g/t Au”).

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Figure 2: Northwestern Corridors Area

https://sonorogold.com/wp-content/uploads/2023/07/Figure2_Northwestern ...

Northwestern Corridors Descriptions

1. The Corridor El Rincón-Bellotoso 1 is approximately 1,500-meters long with the southeast end near the steep sloped Reina de Plata vein area to the offsetting post mineral northeast trending fault.
2. The Corridor Bellotoso 2 is approximately 1,400-meters long with a southeast end where outcrops are sparse with mostly thick colluvium covered rock and the projected post mineral fault offsetting the mineralized structure.
3. The Corridor Bellotoso 3 is approximately 750-meters long in the outcropping area with a possible 600-meter southeast extension beneath colluvium of soil, talus and alluvium.
4. The Inferred Corridor Bellotoso 4 is projected with approximately 500-meters in length and a possible additional southeast extension beneath colluvium that ends at the northeast trending post-mineral fault.

Mel Herdrick, Sonoro’s VP of Exploration, noted that “Target drilling within the Northwestern Corridors Area will increase the degree of completed exploration of Cerro Caliche’s known mineralized gold zones from just over 30% to approximately 50%, and also potentially increase the project’s oxide gold resource.”