Pioneer Lithium (ASX:PLN) said broad zones of undiscovered and untested radiometric anomalies were detected across the length of the 17-kilometer-long strike of the Skull Creek uranium project in Colorado, indicating the potential for large-scale uranium mineralization, according to a Wednesday Australian bourse filing.

It completed two phases of soil and regolith sampling at the project, collecting 848 samples, which have been dispatched for multi-element analysis.

The geological team from Bigrock Exploration is remobilizing to the site for more geological mapping in preparation for drilling planning.