Algo Grande Copper (WKN A41UK1 / TSXV ALGR) reports a new high-grade copper skarn discovery at the Adelita project in the Mexican state of Sonora! The promising find is the result of a project-wide prospecting campaign, during which the red metal was also detected in numerous other targets on the 100% Algo Grande-controlled property!
As the company led by CEO Enrico Gay just reported, mineralization has been identified over more than 300 meters at the surface at the new discovery within the Potrero South target area, located approximately 3 kilometers south of the original Cerro Grande discovery, with some samples yielding more than 3% copper!
With this, Algo Grande is significantly expanding its focus beyond the already drilled Cerro Grande area. In total, the company collected 49 rock samples during the surface campaign, 19 (!) of which showed grades of more than 1% copper. Overall, the program confirmed copper, gold, and silver mineralization in several target areas, including Potrero South, as well as Las Trancas, Cerro Grande Northwest, La Molina, and Mezquital.
Furthermore, Algo Grande announced that the first phase of the drilling program at Cerro Grande has now been completed. However, the analysis of the remaining drill cores obtained during the process is still pending.
Algo Grande: Adelita could host a multi-part mineralized system
The new skarn zone at Potrero South is a key result of the January 2026 campaign for Algo Grande. As mentioned, the target area is located about three kilometers south of Cerro Grande and has not been subject to drilling until now. According to the company, 14 rock samples were taken there, confirming copper mineralization. Three samples were above 1% copper, and four showed more than 1 gram of gold per ton. The highest reported values reached 3.06% copper, 3.72 g/t gold, and 232 g/t silver!
From Algo Grande’s perspective, this find supports the interpretation that the Adelita project hosts a multi-part mineralized system rather than a single occurrence. The company describes Adelita as a copper-dominated system with skarn, porphyry, and epithermal components. The fact that a second skarn mineralization with significant surface expression has now been identified south of Cerro Grande provides a further building block for this thesis. Potrero South is therefore to be included in the Phase II drilling program, which is already scheduled for the second quarter of 2026.
New or further evidence was also gathered in other areas of the project. In the Cerro Grande Northwest target area, for example, eight samples from outcrops confirmed copper mineralization. According to the company, these results could extend the known strike length of the Cerro Grande discovery by 1.5 kilometers. This would be relevant in that the known mineralization would then occur not only in the central area but on both limbs of the folded limestone unit that hosts the Cerro Grande skarn system.
Surface samples confirm copper in several target areas
In addition to Potrero South and Cerro Grande Northwest, Algo Grande highlights Las Trancas in particular. There, a field visit confirmed copper and silver mineralization at the surface, accompanied by hematitic and sericitic alteration. The company sees this as evidence of structurally controlled mineralization. Four rock samples confirmed copper grades; three of them were above 1%. The peak value was 41.40% copper, 13.45 g/t gold, and 1,570 g/t silver. According to the information provided, this is a selective rock sample from an old stockpile and is therefore not representative material for the entire target area.
For Algo Grande, Las Trancas is also significant because historical trenches there have already yielded 9.5 meters with 16.4 g/t gold and 1.9% copper. However, the target area has not historically been tested with diamond drilling; only extension drilling without prior structural interpretation of the mineralized system had been carried out. Future work there is to include detailed mapping, systematic sampling, and an initial drilling program in the area of a historical adit. Las Trancas is also intended to be part of the planned Phase II program.
Another target area is La Molina. According to Algo Grande, this area was defined as a new target during the prospecting campaign in January 2026. Several high-grade rock samples and copper indications were identified there that had not been recognized historically. Five samples confirmed copper mineralization, two of them with more than 1% copper. The highest values were 1.99% copper, 17.90 g/t gold, and 44 g/t silver. From the company’s perspective, it is noteworthy that La Molina had previously been suggested as a prospective target by a machine learning program, even though detailed geochemical and geophysical data were previously lacking there.
Phase I drilling program at Cerro Grande is completed
While surface work yielded new target areas, Algo Grande has simultaneously completed the Phase I drilling program at the Cerro Grande skarn. According to the company, all remaining drill cores from holes AG_GC_001, AG_GC_002 in the interval between 450 and 600 meters, as well as AG_GC_003 and AG_GC_004, have been handed over to ALS Hermosillo. The samples have been transported, logged, and are now in preparation and geochemical analysis. Results are expected in the coming weeks.
The drilling program was designed to better define the mineralization within the Cerro Grande skarn system and to test its vertical and lateral continuity. Previously reported results from the first 450 meters of drill hole AG_GC_002 had, according to the company, led to the discovery of three previously unknown high-grade skarn horizons. The mineralization there extended from the surface to a depth of 390 meters and remained open at depth. In total, five high-grade skarn horizons now define the mineralized system of Cerro Grande. In drill hole AG_GC_002, more than 70 meters of cumulative mineralization were recorded across these horizons, including 36 meters with grades of over 1% copper.
Adelita project shows several mineralized centers
In addition, Algo Grande mentions results from the Mezquital target area, where several copper-bearing float samples and tourmaline breccias as float were identified during a brief reconnaissance. Although their source in the bedrock has not yet been located, the combination of copper mineralization and tourmaline breccias is interpreted by the company as an indication of a magmatic-hydrothermal center. Three samples confirmed copper there, one of them with more than 1% copper and a peak value of 1.58% copper, 2.02 g/t gold, and 82.10 g/t silver.
In summary, the new surface results and the completed first drilling phase reinforce the image of a project with several mineralized target areas. For Algo Grande, this means, among other things, that further work on the Adelita project will not focus solely on Cerro Grande. With Potrero South, Las Trancas, La Molina, Cerro Grande Northwest, and Mezquital, there are now several promising areas where the next exploration steps can begin.
This article is an advertorial text created and distributed on behalf of Algo Grande Copper.
