Aztec Samples up to 15.6 gpt Gold & 177.3 gpt Silver at the Cervantes Project, Sonora, Mexico; Surface Exploration Program Outlines Multiple Strong Precious Metals Targets

Executive Summary

• Aztec Minerals completed Phase 1 of its 2025 surface exploration program at the Cervantes porphyry Au‑Cu project, collecting 151 outcrop/sub‑crop samples across three priority target areas.
• High‑grade intercepts were identified, including up to 15.6 g/t Au, 177.3 g/t Ag, and 8,062 ppm Cu in composite samples from the Brazil target, expanding the known mineralized envelope of the California porphyry system eastward by ~0.5 km.
• The results support plans for a follow‑up drilling campaign after the rainy season to test extensions of the oxide gold cap and deeper sulfide zones at California, Brazil, Estrella, and other adjoining targets.

Key Details

• Program Scope: Reconnaissance outcrop sampling & geological mapping over 3,649 ha (100 % owned).
• Sampling Effort: 151 samples collected (outcrops, sub‑crops, adit chips, composite dumps) across California East, California North, Brazil, Estrella, Purisima East and other zones.
• Top Surface Sample Highlights (selected from Table 1):
• Sample 830115 – Brazil Composite: 15.6 g/t Au, 1,095 ppm Cu, 177.3 g/t Ag.
• Sample 830116 – Brazil Outcrop Chip: 7.6 g/t Au, 1,358 ppm Cu, 150.5 g/t Ag.
• Sample 830089 – Estrella Outcrop Chip: 10.2 g/t Au, 824 ppm Cu, 15.3 g/t Ag.
• Sample 830097 – Purisima East Adit Chip: 0.1 g/t Au, 8,062 ppm Cu, 1.2 g/t Ag.
• Geological Interpretation: Mineralization in the 2025 program is interpreted as extensions of the California porphyry complex, expressed in B‑type vein stockwork and disseminated mineralization within quartz‑feldspar porphyries and hydrothermal breccias.
• Target Expansion:
• Eastward extension of the California system by ~0.5 km.
• Northward extension up to 300 m into California North.
• Additional high‑grade zones identified at Brazil and Estrella targets.
• Future Work: Pending permitting, market conditions, and funding, Aztec plans a follow‑up drilling program (first‑pass drill holes) after the July–October rainy season to:
• Expand the oxide gold cap at California.
• Test deeper copper‑gold sulfide mineralization beneath the oxide zone.
• Drill first passes into hydrothermal breccias and quartz‑feldspar porphyries at Brazil, Estrella, and California North.
• QA/QC: Sampling conducted under an industry‑standard QA/QC protocol with certified standards, blanks, and duplicates; analyses performed by Bureau Veritas Minerals (Hermosillo, MX).
• Project Context: Cervantes is a 3,649 ha fully owned porphyry Au‑Cu project in Sonora, Mexico, situated near several historic mines (Cananea, Mulatos, San Antonio, La India, Santana). Prior drilling has intersected oxide gold caps and sulfide zones with grades up to 1.49 g/t Au over 137 m.

Notable Quotes

“The initial surface exploration program has confirmed strong mineralization beyond the known California porphyry system, providing a solid foundation for our upcoming drill campaign.” – Simon Dyakowski, President & CEO, Aztec Minerals Corp.