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Algo Grande Copper Corp
Symbol ALGR
Shares Issued 42,339,746
Close 2026-07-28 C$ 0.49
Market Cap C$ 20,746,476
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Algo Grande Copper expands drilling at Adelita

2026-07-28 16:19 ET - News Release

Mr. Enrico Gay reports

ALGO GRANDE PROVIDES PHASE II DRILL UPDATE AT ADELITA; COPPER INTERSECTED IN SKARN AND ANDESITIC PORPHYRY AT CERRO GRANDE

Algo Grande Copper Corp. has provided an update on its continuing phase II drill program at the 100-per-cent-owned Adelita project, Sonora, Mexico. A second, track-mounted drill rig has arrived on site and is being mobilized to run alongside the first rig across the Cerro Grande skarn target, and the program has now advanced through the completion of hole 1 and into hole 2, which has intersected copper mineralization in both skarn and andesitic porphyry.

  • Second drill rig mobilized to site: a second, track-mounted drill rig has arrived at the Adelita project and is being set up to run concurrently with the first rig, expected to increase the overall pace of the phase II program;
  • AG_CG_PH2_002 (hole 2) intersects 28.37 metres of copper mineralization across two intervals: 19.80 metres from 146.70 to 166.50 metres and a second 8.57-metre interval from 168.36 to 176.93 metres, comprising chalcocite, chalcopyrite, bornite and chrysocolla hosted in garnet-dominant skarn and, for the first time in the program, in andesitic porphyry;
  • Garnet-dominant skarn assemblage points to a more proximal position in the system: the association of bornite, chalcopyrite and abundant chalcocite with high-temperature prograde garnet skarn suggests hole 2 may be approaching the proximal part of the mineralizing system, or a major hydrothermal fluid conduit;
  • Hole 2 advancing toward 700-metre total depth, currently below 200 metres: from 400 metres onward, the hole will test previously undrilled ground, targeting potential expansion of the skarn at depth and a possible feeder intrusion beneath Cerro Grande.

Enrico Gay, chief executive officer of Algo Grande Copper, commented: "Less than 10 per cent into our phase II drill program, we are intersecting visual copper mineralization within the Cerro Grande skarn. With a second drill rig expected to commence operations shortly, we are entering what we believe will be the most active and potentially transformational period in the company's history. We look forward to reporting our first assay results as they become available."

Second rig mobilization

The company has mobilized a second, tracked drill rig to the Adelita project. The tracked configuration was selected to move efficiently across the rugged terrain surrounding the Cerro Grande skarn target, supporting tighter drill spacing and a faster overall pace of testing across the target corridor. With two rigs now active, the company expects to increase the cadence of drilling and results through the remainder of the phase II program.

Hole AG_CG_PH2_001 results

Hole AG_CG_PH2_001, targeting the Cerro Grande zone, has been completed at a final depth of 550 metres from a collar at 739,090 metres east/2,962,006 metres north (WGS84, UTM zone 12N), elevation 453 metres (azimuth 240 degrees, dip neagtive 45 degrees). The hole intersected a granodiorite intrusive complex cut by quartz monzonite dikes, with pervasive to moderate silicification, quartz-K-feldspar veining, and disseminated magnetite, along with visual indications of pyrite, chalcopyrite, molybdenite and calcite veinlets with tungsten-mineral fluorescence under ultraviolet light.

Near the base of the hole (472 to 476 metres), fugitive calcite was observed. Fugitive calcite is commonly interpreted as a pathfinder for a mineralizing intrusion at depth in skarn-related systems and its presence near the bottom of the hole is viewed by management as a further indicator of a potential mineralized intrusive source at depth, below the interval reached by AG_CG_PH2_001.

Hole AG_CG_PH2_002 was planned on top of the Cerro Grande mountain, drilling steeply into the system from a collar at 738,897 metres east/2,961,802 metres north (WGS84, UTM zone 12N), elevation 582 metres, with an azimuth of 110 degrees and a dip of 80 degrees. The hole is advancing at the expected pace toward a planned total depth of 700 metres and has advanced below 200 metres to date. The hole was expected to intersect known mineralization at 250 metres, but copper mineralization was encountered over 100 metres above the expected mineralized zone. This includes 19.80 metres of copper mineralization from 146.70 to 166.50 metres, comprising massive brown garnet-dominant skarn (garnet and pyroxene). A second mineralized interval of 8.57 metres was logged from 168.36 to 176.93 metres. In aggregate, the two intervals represent 28.37 metres of copper mineralization intersected in hole AG_CG_PH2_002 to date, separated by a 1.86-metre unmineralized interval. Mineralization was observed within skarn and, for the first time in the program, within an andesitic porphyry intrusion hosting chalcopyrite.

The mineralization in the skarn horizon occurs within massive brown garnet-dominant skarn (garnet and pyroxene), which the company interprets as a high-temperature pro-grade skarn subsequently overprinted by a copper-rich mineralizing event. The association of garnet-dominant skarn with bornite, chalcopyrite and abundant chalcocite suggests the drill hole may be approaching the proximal part of the mineralizing system, or a major hydrothermal fluid conduit. Contacts are expected to become progressively more diffuse with depth as drilling approaches closer to source.

From 400 metres to the planned total depth of 700 metres, hole AG_CG_PH2_002 will test ground that has not previously been drilled. This interval is designed to evaluate the expansion of the Cerro Grande skarn at depth and test a possible feeder intrusion beneath the Cerro Grande skarn.

Qualified person

The scientific and technical information disclosed in this news release has been reviewed and approved by Joao Rocha, EurGeol, vice-president of exploration of Algo Grande Copper, a qualified person as defined by National Instrument 43-101.

About Algo Grande Copper Corp.

Algo Grande Copper is a growth-focused mineral exploration company advancing the Adelita project, a district-scale, multisystem copper-silver-gold opportunity positioned in the prolific Arizona-Sonora copper belt. The 5,895-hectare Adelita project is anchored by the high-grade Cerro Grande Cu-Ag-Au (copper-silver-gold) skarn discovery, which exhibits strong continuity along a defined corridor extending over six kilometres. Reprocessing of legacy geophysical data and field mapping indicate the presence of a potential porphyry system at depth, suggesting a classic skarn-porphyry mineralization model similar to major deposits found throughout northwestern Mexico.

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