Riversgold Limited (ASX:RGL) has confirmed its Canadian Saint John project boasts rockchips containing gold, copper, and antimony. Located 50km from the US border, assay results on rock chips from the project – located from a quarry – include: One sample at 17% copper; 11% antimony; 0.8g/t goldOne sample at 11% copper; 7% antimony; 0.6g/t goldOne sample at 7% copper; 5% antimony; 0.4g/t goldSilver is also a feature of mineralisation, as far as rock chips go, at the project. Another prospect called Prince of Wales, rockchips from a quarry and roadside cutting include: 3.4% copper; 1.9% antimony…