Felix Gold (ASX:FXG) has extended the known antimony system at the Treasure Creek Project in Alaska, US, from drilling at the NW Array prospect.
The company has extended antimony veining in both western and southerly directions from the main drilling area, with mineralisation remaining open in both directions.
Assays from the NW Array prospect include 8.67m @ 12.51% antimony from 17.08m; 4.92m @ 12.53% antimony from 4.21m, including 1.63m @ 36.65% antimony from 7.5m; and 10.25m @ 2.17% antimony from 19.1m, including 3.15m @ 6.09% antimony from 22.76m.
Felix has also returned gold results such as 25.61m @ 2.03 grams per tonne gold from 37.85m, including 11.51m @ 3.88g/t gold.
To date, Felix has received results from 37 diamond holes and one reverse circulation hole, with antimony and multielement assays awaiting for a further 14 diamond holes and one reverse circulation hole, as well as gold assay pending for another 43 diamond holes and one reverse circulation hole.
Executive Director Joe Webb says the company has identified NW Array mineralisation to continue growing with each new batch of results, “delivering antimony grades that are exceptionally rare anywhere in the world — from surface”.
“We are now extending high-grade mineralisation west and south of the main drilling area, while continuing to intersect shallow zones that support both scale and near-term mining potential,” Webb says.
“What makes Treasure Creek strategically different is not simply grade — it is ore quality. We continue to demonstrate that this system contains the type of clean, high-grade antimony mineralisation capable of producing military-grade products from ore, no other known project outside China can make this claim.
“At a time when the United States has no domestic antimony supply and is actively seeking secure long-term feedstock, every hole continues to strengthen Treasure Creek’s strategic importance.”
In mid-November 2025, Felix delivered 89.2% antimony-bearing minerals in samples from the Treasure Creek Project, with flotation concentrates exceeding grades required for the US military.
The US domestic supply of antimony is virtually non-existent, with around 90% of global antimony production sourced from China, Russia, and Tajikistan, as reported by Mining.com.au.
With ongoing export bans from China, Western nations such as Australia, Canada, and the US are suffering significant supply risks, as the need for critical minerals continues to grow.
Mining.com.au reported last year that antimony has gone from niche to indispensable in short order, due to export bans.
The Treasure Creek Project, located in Alaska, hosts one of the only proven sources of antimony ore in the US.
Felix Gold is a gold and critical minerals explorer, focused on the Tintina Gold Province in Alaska, US.
Write to Maddison Elliott at Mining.com.au
Images: Felix Gold
