Drilling Campaign: Algo Grande Aims to Open New Copper Corridor with 8,000-Meter Drilling Program

Algo Grande Copper (WKN A41UK1 / TSXV ALGR) is bringing its Adelita project in Sonora one step closer to the next drill campaign. The company has contracted Major Drilling Group International to carry out a Phase II program covering approximately 8,000 meters and has simultaneously commenced groundwork on the project.

This marks a transition for Adelita from working on individual target areas to a broad-scale drill campaign at the district level. The focus is on several high-grade zones surrounding the Cerro Grande target, supplemented by additional targets that underscore the project’s geological potential beyond the known core area.

The work now underway initially focuses on the practical preparation of the site. This includes the repair of existing access roads as well as the construction of additional access routes to facilitate the mobilization of equipment. The focus is on both sides of the Cerro Grande skarn target, where the first drilling is scheduled to take place. This is an important operational step for Algo Grande, as it creates the conditions to test several target areas in quick succession.

Algo Grande Systematically Prepares Phase II at Adelita

As part of the preparations, approximately 30 drill pads, each measuring 7 by 7 meters, are currently being established. These pads are distributed across the Cerro Grande skarn and its extensions, including the southern and northwestern zones. In addition, there are other prioritized target areas such as Cerro Potrero South and Las Trancas. Taken together, this results in a drilling campaign that is not focused on a single discovery point, but rather on a larger mineralized system.

Cerro Potrero South is of particular interest. There, Algo Grande has identified a skarn outcrop approximately 300 meters long, located about three kilometers from Cerro Grande. Las Trancas, in turn, is described as an epithermal target with significant silver, copper, and gold mineralization. This combination of skarn and epithermal target areas indicates that Adelita geologically encompasses multiple mineralized systems. For the next drill phase, this means that Algo Grande is not only focusing on extensions of a known zone but also intends to test new areas of interest within the project.

Nevertheless, the focus remains clear: The initial drilling is primarily intended to help verify and further delineate the extent of high-grade copper mineralization along the six-kilometer-long limestone-bearing corridor. It is precisely this corridor that forms the backbone of the project and connects the discoveries made to date with additional exploration potential.

Adelita Relies on Multiple Data Sets for Drill Target Selection

In parallel with the earthworks, Algo Grande has presented a comprehensive exploration update for Adelita. Several programs designed to sharpen the geological understanding at the project level have now been completed or are nearing completion. These include a LiDAR survey of the entire project, an ongoing drone-based magnetic survey, and a district-level geochemical sampling program.

As Algo Grande explains, the LiDAR survey has already been completed. The final processing of the high-resolution data and the corresponding deliverables are still pending. This data is expected to be particularly important for topographic interpretation and the more precise identification of geological structures. According to the company, the drone-based magnetic survey is about 60% complete. Work had to be temporarily suspended after equipment was damaged. However, the program is expected to resume in the coming weeks. Upon completion, Algo Grande anticipates additional indications of subsurface structures and potential mineralization controls.

This is complemented by a district-scale geochemical soil sampling program. A total of 1,685 samples were collected over an area of approximately 8 square kilometers. These samples are currently being analyzed using portable XRF technology. Approximately 10% of the most promising results will then be sent to an independent certified laboratory for detailed geochemical analysis. It is precisely this combination of remote sensing, geophysics, and geochemistry that is crucial for selecting drill targets, as it significantly broadens the data set for prioritizing individual targets.

Why the Ongoing Work Is Important for Algo Grande

For Algo Grande, this phase marks the transition from data collection to targeted implementation in a drilling program. The company expects to be able to provide an update on the prioritized drill targets for Phase II of drilling in the coming weeks, following the consolidation of the various datasets. The program is scheduled to begin in May which suggests that the final selection of drill targets is imminent.

Adelita covers 5,895 hectares and is located in the Arizona-Sonora Copper Belt, one of North America’s major copper regions. The project is anchored by the high-grade copper-silver-gold discovery Cerro Grande, which, according to the company, shows strong continuity along a defined corridor of more than six kilometers. Furthermore, the reprocessing of older geophysical data and field mapping suggest a potential porphyry system at depth. This points to a classic skarn-porphyry model, as is known from several significant deposits in northwestern Mexico.

This provides a clear framework for Algo Grande: The second drill phase at Adelita is intended not only to pursue known high-grade targets but also to test the broader geological picture. With earthworks underway, exploration programs nearly complete, and Major Drilling contracted, the company is now operationally ready to base the next drilling campaign on a broader, data-driven foundation. This marks a decisive phase for Adelita as a copper-silver-gold project in Sonora, during which the true extent of the system along the Cerro Grande Corridor and in the surrounding target areas is expected to become apparent.


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