WA1 Resources (ASX:WA1) said infill drilling in the eastern zone of the Luni niobium project in Western Australia encountered high-grade niobium intersections, according to a Wednesday Australian bourse filing.

It hit intercepts of 21.4 meters at 7.4% grade of niobium pentoxide from 91.3 meters, as well as 10.2 meters at 6.1% grade of niobium pentoxide from 40.3 meters.

Ongoing drilling in the zone is set to inform a planned mineral resource update, the company said. A pre-feasibility study for the project remains on track for release in the December quarter.

The company's shares were down nearly 1% in recent Wednesday trade.