Live News • Aug 08
Perpetua Resources Uncovers High-Grade Gold Antimony and Gold-Tungsten Zone at Stibnite Project Perpetua Resources reported new high-grade gold and antimony discoveries and identified a new gold-tungsten zone at its Stibnite Gold Project in Idaho. This work is supported by an approved 2026 exploration program that includes at least 10,000 meters of core drilling.
The company has submitted a tungsten exploration funding proposal to U.S. government agencies to support drilling and to assess whether tungsten can be developed as a second critical mineral at Stibnite alongside antimony.
Perpetua Resources’ shares trade at about CA$34.48, with the stock up 33.7% over the past week. This suggests a period of heightened investor interest around the project update.
The key angle is the broadening of Perpetua Resources’ critical minerals exposure beyond antimony. This could change how the Stibnite project is viewed if tungsten potential is confirmed, while also adding permitting, execution, and funding risk as the exploration program scales up. Announcement • Aug 07
Perpetua Resources Reports New High-Grade Gold and Antimony Discoveries and A New Gold-Tungsten Zone At Stibnite Perpetua Resources Corp. reported drilling results and provided an update on its 2026 exploration program in Valley County, Idaho. The exploration plan was approved by the U.S. Forest Service in 2025. First exploratory drilling in nearly a decade at Perpetua's Idaho properties returned significant, high-grade gold, antimony and tungsten results, including intercepts of 21.3 meters at 3.2 g/t gold and 0.9% tungsten and 6.4 meters at 16.2 g/t gold and 1.7% antimony at Yellow-Pine and 3.0 meters at 14.5 g/t gold at Hangar Flats. New gold-tungsten intercepts, alongside historic tungsten drill results and past production at Stibnite, establish tungsten as a new exploration focus and a potential second critical mineral at the Project. Company submits tungsten exploration funding proposal to U.S. Government Agencies to supplement its current 10,000-meter drilling program focused on growing gold, antimony and tungsten. Recent drilling between the currently permitted Yellow Pine and West End reserve pits continues to reveal compelling new mineralization, including multiple high-grade gold intervals and a new gold-tungsten discovery. Significant high-grade gold intercepts, including a gold-tungsten intercept, have been identified in the Clark Tunnel Fault Zone located along the southeastern edge of the proposed Yellow Pine pit. Additional occurrences of scheelite, a tungsten-bearing mineral, have been observed in ongoing drilling in the Clark Tunnel Fault Zone. In addition, widely spaced drilling and surface sampling at the Huckleberry Fault Zone returned broad intervals of gold mineralization. Lying immediately adjacent to the Yellow Pine reserve pit limits, the Huckleberry Fault Zone spans over 100 meters in width and has been traced across 0.5km of strike length, with historic data indicating higher-grade lenses can occur. At the Hangar Flats deposit, drilling at the NDMEA zone encountered additional high-grade gold, while critical mineral-focused drilling at Hangar Flats returned significant antimony-tungsten intercepts. These results collectively demonstrate further opportunities to grow and unlock the 3.1 million ounces of indicated and inferred gold resources and 99.8 million pounds of antimony resources that are located outside current reserves. Exploration drilling is currently underway with 4 rigs and approximately 5,800 meters of new drilling complete to date. The results presented below are from recently completed drill programs totaling 8,340 meters, which was split between geotechnical drilling and exploration. Notable new intercepts include: Yellow Pine Clark Tunnel Fault Zone Discovery: Hole SB597: 21.3 meters of 3.2 g/t gold and 0.9% tungsten from 24 meter depth, including 7.0 meters grading 7.1 g/t gold and 0.3% tungsten from 34 meter depth; Hole SB580: 6.4 meters of 16.2 g/t gold and 1.7% antimony from surface; Hole SB582: 15.0 meters of 6.3 g/t gold and 0.8% antimony from 11 meter depth; Hole SB581: 5.5 meters of 14.2 g/t gold and 1.2% antimony from 8 meter depth; Hole SB579: 4.6 meters of 10.0 g/t gold and 0.6% antimony from 9 meter depth; Hole SB578: 4.9 meters of 9.3 g/t gold and 0.7% antimony from 7 meter depth; Hole SB576: 3.4 meters of 9.6 g/t gold and 0.4% antimony from 7 meter depth; Hole SB577: 3.0 meters of 9.4 g/t gold and 0.9% antimony from 9 meter depth. Yellow Pine Huckleberry Fault Zone: Hole SB588: 69.6 meters of 0.8 g/t gold from 61 meter depth (Lower Huckleberry); Hole SB595: 41.6 meters of 0.8 g/t gold from 131 meter depth (Upper Huckleberry), including 21.8 meters of 1.2 g/t gold from 148 meters depth. Hangar Flats Extensions (NDMEA zone): Hole SB584: 3.0 meters of 14.5 g/t gold from 82 meter depth; Hole SB585: 5.5 meters of 1.1 g/t gold and 0.3% antimony from 108 meter depth. Hangar Flats Antimony and Tungsten Results (excluding gold assays): Hole SB519: 22.9 meters of 3.2% antimony and 1.2% tungsten from 330 meter depth, including 4.4 meters of 4.3% antimony and 3.3% tungsten from 334 meter depth and 1.8 meters of 8.3% antimony and 4.6% tungsten from 351 meter depth; Hole SB522: 9.8 meters of 8.3% antimony and 4.6% tungsten from 260 meter depth; Hole SB527: 3.4 meters of 10.6% antimony and 1.5% tungsten from 247 meter depth; Hole SB524: 1.7 meters of 10.5% antimony and 1.8% tungsten from 256 meter depth. A minimum of 10,000 meters of core drilling is planned for 2026 using 4 drill rigs with the ability to expand the program if warranted, based on results. Perpetua estimates approximately 5,800 meters of the 2026 core drilling program have been completed and are in preparation for assay. Initial drilling was planned for potential expansion of the gold and antimony pits in the currently approved mine plan will test along strike and at depth within the Yellow Pine and Hangar Flats deposits. This includes follow-up drilling on the Clark Tunnel Fault Zone and Huckleberry Fault Zone. Definition drilling within existing approved footprints is planned with the goal of upgrading inferred resources to measured and indicated categories. Additional testing is also planned for several known high-grade targets near the current pits and located close to planned future milling infrastructure. Any future development of target exploration areas that are not approved for mining in the current plan of operations will require additional environmental review and permitting to be completed before mining could commence in these areas. During the first half of 2026, Perpetua became aware of U.S. government-sponsored initiatives focused on tungsten. Based on the historical production of both antimony and tungsten at Stibnite and given that recent drilling confirmed areas in the Hangar Flats deposit host a combination of high-grade antimony (5-13%) and tungsten (1-6%) at varying widths of 1-10 meters, the Company has submitted proposals seeking U.S. grant funding to undertake drilling, sampling, metallurgical analysis, and resource evaluation. In its grant proposal, Perpetua proposed to embark on a program focused on drilling and metallurgical sampling beneath the Hangar Flats pit. This work would serve a dual strategic purpose of enabling drilling to test known high-grade antimony-tungsten mineralization at depth while simultaneously providing additional testing of significant gold and antimony resources previously identified but not included in Perpetua's current mine plan. Live News • Aug 01
Perpetua Resources Launches Pilot Plant With US Army to Advance Domestic Antimony Supply Perpetua Resources, the US Army and Idaho National Laboratory have launched a modular pilot plant to process antimony trisulfide using samples from the Stibnite Gold Project in Idaho, which is described as the only identified domestic reserve of this critical mineral.
The project is intended to support a secure US antimony supply chain for military and industrial uses, linking Perpetua’s resource base directly to national security and reducing reliance on foreign sources.
Perpetua Resources’ shares trade at about CA$25.78, with the stock down about 30.9% over the past 90 days, which frames this announcement against a period of weaker recent share performance.
This pilot plant ties Perpetua Resources’ future more closely to US defense and critical minerals policy, which could affect funding access, permitting priorities and long‑term offtake risk if the initiative progresses beyond testing. 
