Trigg Minerals (ASX:TMG) said rock chip sampling across the Antimony Canyon project in Utah returned high-grade results, with assays up to 33.2% grade of antimony and multiple samples exceeding 10% grade of antimony, according to a Thursday Australian bourse filing.

It said that 251 rock chip samples were collected during the program, and 52 of these samples confirmed widespread high-grade antimony mineralization across the project area.

It plans to conduct further geological mapping of priority targets, geophysical surveys to assist in identifying extensions of known mineralization, and preparation of initial drill sites to test high-priority zones.

Its shares fell 2% in recent trading on Thursday.