Trailbreaker Resources Ltd. has reported results from its 2025 exploration program at the Atsutla Gold project in northwestern British Columbia, significantly expanding the known footprint of high-grade gold mineralization and discovering new copper-gold-silver showings. The program focused on the Highlands zone, where detailed prospecting and mapping expanded the main structural feature to a 1.0 km by 1.2 km area and led to the discovery of the Highlands North zone 1.1 kilometers to the north.
The company traced a shallowly-dipping shear structure hosting high-grade gold-bearing quartz veins along a ridge for 1.0 kilometer in a northeast-southwest direction. Rock samples from this expansion returned assays up to 221.6 grams per tonne (g/t) gold at the northeast corner and 9.32 g/t gold at the southwest corner. The highest individual gold value returned was 401.8 g/t gold with 493 parts per million (ppm) silver, obtained from a rock taken 140 meters from previously discovered high-grade showings. The structure was traced an additional 1.2 kilometers west onto newly acquired claims, where assays returned values up to 4.83 g/t gold.
A newly discovered zone of high-grade copper, termed the Highlands North zone, yielded assays up to 1.65% copper, 5.92 g/t gold, and 551 ppm silver from separate rock samples. Five rock samples in this area returned assay values greater than 1% copper, and eight samples returned values greater than 100 ppm silver. The high-grade copper values came from more steeply dipping quartz veins ranging from 20 to 80 centimeters thick, hosting chalcopyrite, bornite, malachite, azurite, and pyrite.
Trailbreaker's geological team interprets the shear structure delineated at the Highlands zone to be continuous with similar structures found at the Christmas Creek zone 1.5 kilometers to the east and the Snook zone 4.5 kilometers to the north. Combined, this area covers 5.0 km by 4.3 km, representing a substantial mineralized system. The company interprets the gold mineralization to be orogenic in nature, with multiple gold ± silver ± copper-bearing shear zones related to larger faults in the area.
Daithi Mac Gearailt, CEO of Trailbreaker, noted that the Highlands zone continues to exceed expectations, with its footprint expanding with each exploration campaign. He emphasized that this represents a new discovery where high-grade gold and silver have been discovered at surface over multiple kilometers, and the zone has never been drilled. The 2025 program consisted of collecting 147 soil samples and 77 prospecting grab samples during late August and early September, with final assays delayed until late December due to multiple re-analyses of high-grade samples and additional quality assurance procedures completed by Bureau Veritas Labs.
Reconnaissance soil sampling to the west of the Highlands North zone returned values up to 66 parts per billion gold, suggesting potential for additional mineralization in this direction. Statistical analysis of rock and soil sample assays in the Highlands zone shows that gold correlates with mercury, selenium, lead, silver, antimony, copper, and arsenic. The Highlands zone and greater Atsutla West area are fully permitted for drilling, and during the 2025 program, the Trailbreaker team ground-truthed potential drill pads to test the shear structure. More information about the company's projects is available at https://TrailbreakerResources.com.
