Australian-listed mining firm GeoPacific Resources Ltd has uncovered more evidence that its project in northern Cambodia is sitting on a major gold resource, the company said in a release yesterday.

It said multiple core samples taken from Prospect 190 at its Kou Sa project in Preah Vihear province yielded a number of zones with high concentrations of gold and silver near the surface in a pattern that suggests a larger, deeper source of high-grade mineralisation.