Mr. Brodie Sutherland reports
TOCVAN DRONE MAGNETIC DATA STRENGTHENS GOLD-SILVER TARGETS ACROSS GRAN PILAR; IDENTIFIES BROAD ZONES FOR EXPANSION POTENTIAL
Tocvan Ventures Corp. has completed the high-resolution drone-based airborne magnetic survey covering the entire Gran Pilar gold-silver project in Sonora, Mexico. The survey, conducted by Zonge International Inc., encompassed 70 east-west lines spaced 100 metres apart, totalling 235.66 line kilometres. The survey was successful in revealing the subsurface features that coincide with known areas of mineralization while outlining the extension of those features on current unexplored areas within the project boundary. This is the first comprehensive survey completed across the project; data are being analyzed for further structural and target interpretations.
Key benefits
The drone magnetic data offer several advantages for exploration:
- High-resolution coverage over the entire project, enabling efficient identification of potential subsurface features potentially hosting mineralization;
- Integration potential with existing surface geochemistry, geological mapping and drill data to support targeted exploration and reduce overall risk.
"We are excited about the completion of this extensive drone magnetic survey at Gran Pilar," said Brodie Sutherland, chief executive officer of Tocvan. "The high-quality data sets a strong foundation for our next phases of analysis and interpretation, which will guide our resource expansion efforts in this promising district. We can see a continuation of many of the structural features we are testing today with drilling; these structures have the potential of expanding our targets across the area, with a specific emphasis on the underexplored Central portion of the project. In addition, we are seeing a large regional low with inset structural corridors in the north that coincides with our broad alteration zone, another positive sign for expanding on targets."
Next steps
The company plans to proceed with detailed data analysis and interpretation, including correlation with geological and geochemical data sets. This will be followed by magnetic inversion modelling to estimate the depth, shape and susceptibility of magnetic sources, further refining exploration targets for the continuing 20,000-metre drill program and permitted pilot mine development.
Summary of the data
The processed magnetic data includes total magnetic intensity (TMI), TMI reduced to the pole (TMI-RTP), calculated first vertical derivative (1VD) of the TMI-RTP, and tilt derivative of the TMI-RTP.
The survey provides comprehensive geophysical data sets that map magnetic field variations across the project area. Key components include:
- Total magnetic intensity (TMI): raw measurements of the Earth's magnetic field strength;
- TMI reduced to the pole (TMI-RTP): adjusted data to simulate measurements at the magnetic north pole, improving anomaly interpretation;
- First vertical derivative (1VD) of TMI-RTP: enhances detection of near-surface features and structural boundaries;
- Tilt derivative of TMI-RTP: aids in identifying the depth and geometry of magnetic sources.
The Gran Pilar project, Sonora, Mexico
100-per-cent-controlled priority targets for trenching and drilling:
- South block main zone expansion:
- Follow up on 2025 drill success:
- 19.4 grams per tonne Au over 3.1 metres within 106.6 metres of 0.6 g/t Au (Feb. 25, 2025, news release);
- 5.4 g/t Au over 6.1 metres within 41.2 metres of 1.0 g/t Au (May 7, 2025, news release);
- 136 g/t Ag over 10.7 metres within 42.7 metres of 41 g/t Ag (June 25, 2025, news release);
- South block (Nov. 12, 2024, news release):
- Placer corridor (900-metre strike length):
- Soil samples up to 21.2 g/t Au and greater than 2,000 g/t Ag;
- Placer source area:
- Soil samples up to 2.4 g/t Au and 22 g/t Ag;
- Rock samples up to 7.3 g/t Au and 389 g/t Ag;
- North block:
- North alteration zone (3.2-kilometre-by-1.5-kilometre area):
- Two-metre chip sample -- 5.6 g/t Au and 106 g/t Ag (Oct. 19, 2023, news release);
- Historic mine working sample -- 3.2 g/t Au and 1,225 g/t Ag (March 8, 2024, news release).
Gran Pilar drill highlights:
- 2025 diamond drilling highlights include:
- 83.5 m of 1.3 g/t Au, including 9.7 m of 10.3 g/t Au (March 11, 2025, news release);
- 97.4 m of 0.7 g/t Au, including 36.3 m of 1.6 g/t Au (March 19, 2025, news release);
- 64.9 m of 1.2 g/t Au, including 3.0 m of 21.6 g/t Au and 209 g/t Ag (March 26, 2025, news release);
- 46.9 m of 0.5 g/t Au, including 2.6 m of 7.2 g/t Au and 80 g/t Ag (April 16, 2025, news release);
- 2025 reverse circulation drilling highlights include:
- 106.8 m of 0.6 g/t Au, including 3.1 m of 19.4 g/t Au (Feb. 25, 2025, news release);
- 41.2 m of 1.0 g/t Au, including 6.1 m of 5.4 g/t Au (May 7, 2025, news release);
- 2024 RC drilling highlights (all lengths are drilled thicknesses):
- 42.7 m of 1.0 g/t Au, including 3.1 m of 10.9 g/t Au;
- 56.4 m of 1.0 g/t Au, including 3.1 m of 14.7 g/t Au;
- 16.8 m of 0.8 g/t Au and 19 g/t Ag;
- 2022 phase 3 diamond drilling highlights (all lengths are drilled thicknesses):
- 116.9 m of 1.2 g/t Au, including 10.2 m of 12 g/t Au and 23 g/t Ag;
- 108.9 m of 0.8 g/t Au, including 9.4 m of 7.6 g/t Au and five g/t Ag;
- 63.4 m of 0.6 g/t Au and 11 g/t Ag, including 29.9 m of 0.9 g/t Au and 18 g/t Ag;
- 2021 phase 2 RC drilling highlights (all lengths are drilled thicknesses):
- 39.7 m of 1.0 g/t Au, including 1.5 m of 14.6 g/t Au;
- 47.7 m of 0.7 g/t Au, including three m of 5.6 g/t Au and 22 g/t Ag;
- 29 m of 0.7 g/t Au;
- 35.1 m of 0.7 g/t Au;
- 2020 phase 1 RC drilling highlights (all lengths are drilled thicknesses):
- 94.6 m of 1.6 g/t Au, including 9.2 m of 10.8 g/t Au and 38 g/t Ag;
- 41.2 m of 1.1 g/t Au, including 3.1 m of 6.0 g/t Au and 12 g/t Ag;
- 24.4 m of 2.5 g/t Au and 73 g/t Ag, including 1.5 m of 33.4 g/t Au and 1,090 g/t Ag;
- 15,000 m of historic core and RC drilling; highlights include:
- 61.0 m of 0.8 g/t Au;
- 21.0 m of 38.3 g/t Au and 38 g/t Ag;
- 13.0 m of 9.6 g/t Au;
- 9.0 m of 10.2 g/t Au and 46 g/t Ag.
Pilar bulk sample summary:
- 62-per-cent recovery of gold achieved over 46-day leaching period;
- Head grade calculated at 1.9 g/t Au and seven g/t Ag; extracted grade calculated at 1.2 g/t Au and three g/t Ag;
- Bulk sample only included coarse fraction of material (three-fourths of an inch to one-eighth of an inch);
- Fine fraction (minus one-eighth of an inch) indicates rapid recovery with agitated leach:
- Agitated bottle roll test returned rapid and high recovery results: 80-per-cent recovery of gold and 94-per-cent recovery of silver after rapid 24-hour retention time.
Additional metallurgical studies:
- Gravity recovery with agitated leach results of five composite samples returned:
- 95- to 99-per-cent recovery of gold;
- 73- to 97-per-cent recovery of silver;
- Includes the recovery of 99 per cent gold and 73 per cent silver from drill core composite at 120-metre depth.
About Tocvan Ventures Corp.
Tocvan Ventures is a dynamic exploration and development company advancing high-potential gold and silver projects in the mine-friendly jurisdiction of Sonora, Mexico. At its flagship Gran Pilar gold-silver project, Tocvan holds a 100-per-cent interest in over 21 square kilometres of prospective ground, bolstered by the pivotal 2023 land acquisition that provides ample space for scalable mine infrastructure, including a planned 50,000-tonne pilot production facility. The company also maintains a 51-per-cent interest in a one-square-kilometre joint venture area with Colibri Resources, further expanding its footprint. Recent exploration successes, including near surface 3.1 m at 19.4 g/t Au, underscore Gran Pilar's potential as a premier gold-silver asset. Additionally, Tocvan's 100-per-cent-owned Picacho gold-silver project, located in the prolific Caborca trend -- home to some of Mexico's largest gold deposits -- positions the company for further growth. With robust metallurgical results (up to 99-per-cent gold recovery and 97-per-cent silver recovery) and a strategic capital to bolster growth, Tocvan is poised to deliver significant shareholder value in a market buoyed by record-high gold prices. With approximately 59 million shares outstanding, Tocvan is committed to unlocking the full potential of its assets through innovative exploration, strategic development and investor-focused initiatives.
Quality assurance/quality control
Rock and drill samples were shipped for sample preparation to ALS Ltd. in Hermosillo, Sonora, Mexico, and for analysis at the ALS laboratory in North Vancouver. The ALS Hermosillo and North Vancouver facilities are ISO 9001 and ISO/IEC 17025 certified. Gold was analyzed using 50-gram nominal weight fire assay with atomic absorption spectroscopy finish. Overlimits for gold (greater than 10 g/t) were analyzed using fire assay with a gravimetric finish. Silver and other elements were analyzed using a four-acid digestion with an ICP finish. Overlimit analyses for silver (greater than 100 g/t) were reassayed using an ore-grade four-acid digestion with ICP-AES finish. Control samples comprising certified reference samples and blank samples were systematically inserted into the sample stream and analyzed as part of the company's robust quality assurance/quality control protocol.
Soil samples were shipped for sample preparation to ALS in Hermosillo, Sonora, Mexico, and for analysis at the ALS laboratory in North Vancouver. The ALS Hermosillo and North Vancouver facilities are ISO 9001 and ISO/IEC 17025 certified. Gold and multielement analysis of soils was completed by aqua regia digestion and ICP-MS finish using a 50-gram nominal weight. Overlimit gold values greater than one g/t were reassayed with a more robust aqua regia digestion and ICP-MS finish. Overlimit analyses for silver (greater than 100 g/t) were reassayed using an ore-grade four-acid digestion with ICP-AES finish. Control samples comprising blank samples and certified reference materials were systematically inserted into the sample stream and analyzed as part of the company's robust quality assurance/quality control protocol.
Mr. Sutherland, chief executive officer for Tocvan and a qualified person as defined by National Instrument 43-101, has reviewed and approved the technical information contained in this release.
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