ioneer (ASX:INR) reported a 45% increase in the mineral resource estimate for the South Basin area within the Rhyolite Ridge lithium-boron project in Nevada, US, according to a Wednesday Australian bourse filing.
The updated South Basin mineral resource estimate comprises 510 million tonnes of material for 3.97 million tonnes of lithium carbonate equivalent and 14.66 million tonnes of boric acid equivalent, the filing added.
The company's shares rose 5% in recent trade.