Diatreme Resources (ASX:DRX) has made progress in its efforts to expand resources at its Northern Silica project in far north Queensland.

Diatreme Resources says positive results from infill and step out drilling at the Si2 deposit in 2022 confirmed the continuity and quality of silica sand in the dune system.

The company highlighted high purity silica results including 40m @ 99.13 SiO2, 47m @ 99.26%, and 50m @ 99.18%.

Diatreme Resources says additional results in the target area will enable commencement of a maiden resource estimate in 2023.

Shares of Diatreme Resources closed up 3.7% today.