Copper sulphide.Easier to process through the mill - sulphides float and get liberated through flocculation (spelling??), whilst oxides need more complex processes to liberate the copper.
LTR Liontown's first spodumene shipment to leave Kathleen Valley this month – but prices far from 2022
SMR Stanmore inks deal with Anglo American and Exxaro to explore and mine area close to Isaac South project