Algo Grande Copper (WKN A41UK1 / TSXV ALGR) has just announced the first drill results from its very first drill program on the Adelita project in the Mexican state of Sonora!
The focus of the announcement is drill hole AG_GC_002 in the Cerro Grande target area, which, according to the company, demonstrates a significant depth extension of the copper-gold-silver mineralization. Particularly important from Algo Grande’s point of view: The hole intersected a total of five mineralized skarn horizons, including three previously unrecognized in historical drilling. According to the company’s interpretation, this confirms not a shallow single level, but a vertically stacked multi-horizon architecture.
The results come from the first completed drill hole since the acquisition of the project. CEO Enrico Gay speaks of a result that underpins further work – deep and lateral step-out drilling. For the team, the discovery of new horizons is an indication that the Cerro Grande mineralization has more extension at depth than previously documented!
Cerro Grande: 41.6 Meters of Skarn in Five Horizons – Broad Mineralization Envelope up to 70.6 Meters
According to the release, drill hole AG_GC_002 averaged 41.59 meters of cumulative skarn mineralization in as many as five horizons. Algo Grande mentions the following as highlights:
- 14.79 meters with 1.4% copper, 0.5 g/t gold and 20 g/t silver
- 9.55 meters with 1.4% copper, 0.4 g/t gold and 41.8 g/t silver
- 7.83 meters with 1.3% copper, 0.4 g/t gold and 48.6 g/t silver – including 1.85 meters with 4.1% copper, 11 g/t gold and 150 g/t silver
In addition, Algo Grande emphasizes that the mineralization does not only occur in the skarn itself: Including adjacent, mineralized host rocks, a broader mineralized envelope of 70.6 meters with >0.6% copper was obtained. These broad intervals contain internal dilution and are therefore not reported as individual skarn intervals, but are intended to illustrate the size of the mineralized system in the borehole.
AG_GC_002 was specifically planned to test the Cerro Grande – Skarn zone below the historical drilling limits. It was precisely this approach that led to the identification of the three new horizons. Algo Grande interprets the data as confirmation that the vertical extent of the system is greater than previously assumed and that the skarn architecture is formed in several levels – a finding that could be decisive for further target development along the strike and at depth.
Drill Hole Details and Status of Algo Grande’s Ongoing Campaign
Drilling of AG_GC_002 commenced on November 23, 2025, and the end of the first phase was reached on January 20, 2026. Important: According to Algo Grande, the published analyses only refer to the first 450 meters of the borehole. AG_GC_002 was then re-entered and extended to a final depth of 600 meters – the assays for the deeper 150 meters are still pending and will of course be reported after receipt, review and verification.
Further drilling is underway in parallel with AG_GC_002: AG_GC_001 did not intersect any comparable skarn horizons, but showed traces of copper mineralization in granodiorite during visual core logging. AG_GC_003 deviated significantly from the planned drilling orientation, but nevertheless encountered skarn mineralization at depth, which, according to the company, supports the model. AG_GC_004 is in progress and, according to logging, has also intersected skarn mineralization; the extent, continuity and grades will be evaluated after completion and availability of the analyses.
Indications of Porphyry at Depth: Alteration and Molybdenum as Additional Vector
In addition to the skarn sections, Algo Grande highlights indications that could point to a porphyry-related system at depth. In AG_GC_002, several andesitic porphyry dikes and evidence of propylitic and potassic alteration were documented. Particularly striking: Molybdenum values of up to 2,820 ppm were measured in an intrusive package between 328.57 and 339.10 meters.
This is relevant for the geological interpretation because skarn systems are often linked to intrusive centers. Algo Grande sees the combination of intrusive phases, alteration and molybdenum as supporting the thesis that the Cerro Grande skarn mineralization could be related to a deeper porphyry-like source. This creates an additional “exploration vector”: On the one hand, further drilling can be carried out along the skarn corridors, and on the other hand, the search for a deeper porphyry core could represent a separate target system.
For the next phase of work, the company announces that it will use surface programs such as soil sampling geochemistry, detailed magnetics and high-resolution LiDAR to improve structural understanding and target accuracy for follow-up drilling.
The bottom line is that AG_GC_002 delivers what we believe is a doubly positive finding for Algo Grande: Firstly, the borehole confirms a stacked skarn system at depth with multiple mineralized horizons and high-grade copper-gold-silver sections. Secondly, alteration patterns and molybdenum enrichment indicate a possible porphyry-related center at depth. For further exploration on the Adelita project, one question is therefore paramount: Where can the newly discovered horizons be traced along the strike and at depth – and where could they combine to form larger, contiguous mineralized zones?
