Iltani Resources (ASX:ILT) recorded up to a maximum assay of 46.5% antimony following its mapping and sampling program at the Antimony Reward project in North Queensland, according to a Monday filing with the Australian bourse.

Results from the 19 samples taken across two mapped vein systems confirm the presence of extensive high-grade antimony mineralization, the filing stated.

High-grade assays extend beyond the zone of historical drilling on the Vein 1 System. They are also reported from the previously undrilled Vein 2 System, the filing added.

A drilling campaign is planned for late September or early October.

The mineral resource company's shares inched up 2% in recent trade.