Berkeley Energia (ASX:BKY) delivered a maiden mineral resource estimate of 11.8 million tonnes at 0.41% lithium oxide and 0.21% rubidium oxide for its Conchas project in Spain, according to a Tuesday filing with the Australian bourse.
The estimate includes about 49,000 tonnes of contained lithium oxide and 25,200 tonnes of contained rubidium oxide, with its entirety classified in the inferred mineral resource category, the filing said.