High-Grade Gold Intercepts Signal Expansion Opportunities at Alamos Gold’s Mulatos District
Bolder Grades and Wider Intervals Point to Resource Growth Potential
Alamos Gold has reported new drill results striking for their consistency and grade. Surface drilling at Mulatos District’s three focal points—Puerto Del Aire (PDA), Cerro Pelon, and the recently discovered Halcon target—not only intersected high-grade gold mineralization but also extended known zones beyond current Mineral Reserves and Resources. The results underpin Alamos’s strategy to centralize higher-grade sulphide ore for future mill feed, optimizing returns as construction accelerates at PDA.
Cerro Pelon and Halcon Stand Out with Wide, High-Grade Gold Intervals
Extended step-out drilling below and north of the mined Cerro Pelon pit showcased several impressive intercepts. Notable highlights included:
| Hole ID | Au Grade (g/t, uncut) | Interval (m) | Location |
|---|---|---|---|
| 25PEL107 | 5.60 | 23.85 | Cerro Pelon |
| 25PEL127 | 6.58 | 15.15 | Cerro Pelon |
| 25PEL109 | 6.64 | 12.05 | Cerro Pelon |
| 25PEL142 | 12.95 | 4.25 | Cerro Pelon |
| 25PEL157 | 4.08 | 13.70 | Cerro Pelon |
| 25HAL017 | 3.04 | 47.60 | Halcon |
| 25HAL025 | 3.53 | 37.35 | Halcon |
| 25HAL019 | 3.46 | 31.50 | Halcon |
| 25HAL024 | 3.88 | 19.00 | Halcon |
The standout interval—47.60 meters at 3.04 g/t Au at Halcon—underscores the potential for another substantial sulphide ore source, only 7 km from the main Mulatos area. Several intercepts exceed 5 g/t Au across intervals longer than 10 meters, with some narrow high-grade values in excess of 10 g/t Au.
Puerto Del Aire: Continued Expansion and Cost Efficiency
PDA remains the linchpin of Alamos’s sulphide expansion plan. While drilling slowed as personnel shifted to advancing construction for a dedicated mill, new results extended mineralization beyond existing defined zones:
| Hole ID | Au Grade (g/t, uncut) | Interval (m) |
|---|---|---|
| 24MUL397 | 13.64 | 8.97 |
| 24MUL398 | 3.72 | 15.60 |
| 25MUL422 | 4.27 | 15.61 |
| 24MUL403 | 4.85 | 14.92 |
| 25MUL418 | 5.77 | 7.10 |
| 24MUL395 | 15.00 | 2.91 |
| 24MUL397 | 43.70 | 0.81 |
These intervals suggest that significant untapped potential remains at PDA, with the deposit still open in multiple directions. Discovery costs have averaged $19 per ounce over the past four years, an indicator of exploration efficiency compared to industry averages.
2025 Exploration Program: Aggressive Drilling Drives New Discoveries
Alamos invested $20 million toward Mulatos District exploration in 2025, nearly matching 2024 expenditures. Drilling activity was robust—56,117 meters across 170 holes tested both near-mine extensions and regional targets, including 13,779 meters at PDA, 21,394 meters at Cerro Pelon, and 20,944 meters at greenfield sites such as Halcon.
With the planned PDA mill creating a centralized processing point for high-grade sulphide ore, these results could substantially extend mine life and improve economics. The Cerro Pelon resource now includes 104,000 ounces grading 4.49 g/t Au, and both Cerro Pelon and Halcon are within trucking distance of the future mill—bolstering their strategic value.
Takeaway: High-Grade Results Poised to Transform Mulatos District’s Outlook
The steady expansion of high-grade mineralization across PDA, Cerro Pelon, and Halcon emphasizes Alamos Gold’s sustained exploration success and underscores the Mulatos District’s potential for future resource upgrades. Investors and industry watchers should note the combination of robust intercepts, growing resource footprints, and strategic infrastructure upgrades. The substantial intervals and grades now confirmed across multiple targets put Alamos in a strong position to deliver low-cost, high-return growth as new sources of ore are developed for the forthcoming PDA mill.
With construction efforts underway and exploration to resume from underground drill platforms at PDA, the pipeline for further discoveries and resource expansion appears well established for the years ahead.
For further technical and scientific detail, see figures and full tables linked by Alamos Gold’s press release, and contact their investor relations team as listed above.
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