New gold discovery boosts Perpetua’s Stibnite project 

Perpetua Resources (Nasdaq: PPTA) (TSX: PPTA) said it has made a new gold discovery during its 2026 exploration drilling program at its Stibnite Gold project in central Idaho, with over 16,000 meters of core drilling across the project now completed. 

Perpetua Resources is advancing construction on the $1.3 billion Stibnite Gold project in central Idaho, which was fast-tracked by the Trump administration as part of efforts to strengthen the US critical minerals supply chain.

The Stibnite project is set to produce roughly 450,000 ounces of gold annually, supported by proven and probable reserves of 148 million pounds of antimony and more than six million ounces of gold. It is one of the few known US sources of antimony, a mineral essential to defence systems, energy storage, and semiconductors, and one of the largest deposits outside China’s control.

Fiddle discovery

Fiddle’s discovery hole, SB633, returned 109.7 meters grading 3.2 g/t gold and 1.1% antimony, among the most significant mineralized intercepts encountered at the project to date, the company said.  

Located approximately 750 meters south of the permitted Yellow Pine pit along the Meadow Creek Fault Zone, Fiddle adds a new target area to the project’s growing in-pit and near-pit resource base.  

The north-trending MCFZ is the district’s main ore-controlling structure, which runs through both the Yellow Pine and Hangar Flats deposits and hosts intrusive-hosted mineralization along its flanks. To test the structural controls of the MCFZ, three holes were subsequently drilled, Perpetua said. This included SB637, which extended mineralization to the north and returned 37.4 meters grading 0.7 g/t gold, 0.1% antimony from 93.8 meters downhole. 

Initial assays from the Fiddle target returned 109.7 meters grading 3.2 g/t gold, 1.1% antimony in hole SB633, beginning at 189 meters downhole. SB633 represents one of the broadest continuous intervals of gold and antimony mineralization returned to date from Stibnite while also exhibiting grades more than double the project’s life-of-mine average. An additional 21 holes were drilled along strike of SB633.  Core logging identified both holes as having similar style mineralization to hole SB633, including abundant stibnite and sulfides within the mineralized zones. 

Follow-up drilling from the Clark Tunnel Fault Zone continued to demonstrate near-surface, high grades including 25.4 meters of 4.5 g/t gold from 13 meters downhole (SB606) and 25.0 meters of 2.3 g/t gold from 18 meters downhole (SB605), the company said.  

“Given their close proximity to the permitted Yellow Pine pit, Fiddle and the CTFZ were prioritized as key targets for the 2026 exploration program,” Perpetua CEO Jon Cherry said in a news release.  

“At Fiddle, our initial hole returned broad, continuous mineralization at significant gold and antimony grades which confirm it as an important new discovery. Meanwhile, drilling continues to reinforce the CTFZ as a near-surface, high-grade target on the eastern extent of the Yellow Pine pit,” Cherry said.