The programme consists of around 2,500m of diamond drilling at the FLT target.
The transaction is due to be finalised early in Q3 2026.
Exploration work at the project has been mostly suspended since 2017 due to delays in obtaining environmental permits.
The acquisition will be executed through an Australian scheme of arrangement.
The agreement includes the purchase of 8,000tpa for a period of ten years.
The Smart Creek Project is situated 100km south-east of Missoula and 20km north of Philipsburg in Montana.