Aldoro Resources has its sights on a potential world-class rubidium resource at its Niobe prospect in WA's Mid West. It has defined an early target of 33,000-150,000 tonnes rubidium oxide, a commodity that sells for more than A$1.4 million a tonne. Aldoro is keen to start the drills spinning in September at the pegmatite project, which will also target lithium potential.