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Sunstone Metals (ASX:STM) announced that their assays reveal significant gold-copper mineralisation at surface, highlighting scope for substantial maiden resource. Where the porphyry is exposed as fresh rock in the trench, the copper values are elevated up to 0.22% copper and 0.16% copper, suggesting overall copper has been leached at surface. Shares are trading 10 per cent higher at 1.1 cents.

Helix Resources (ASX:HLX) announced the commencement of a drill campaign targeting highly prospective IP anomalies at the Company's Canbelego copper project, located in central NSW. Drilling with Reverse Circulation (RC) pre-collars and diamond core tails is planned to test the strongest part of the anomaly. Shares are trading 66.67 per cent higher at 0.5 cents.

Riversgold (ASX:RGL) announced that drilling will commence at their Northern Zone Gold Project next week. Gold at Northern Zone is hosted in a porphyry intrusion with drilled widths exceeding 100m in true width. Shares are trading 28.57 per cent higher at 0.9 cents.