zu
Izithando zomlilo ziyimishini ekhethekile esetshenziswa embonini yezimayini ukuhlaziywa okuqondile kwezinsimbi eziyigugu, ikakhulukazi igolide nesiliva. Le ndlela, eyaziwa njenge-fire assay, yaziwa njengenye yezindlela ezinembile kakhulu zokunquma okuqukethwe kwalezi zinsimbi ezibalulekile kumasampula we-ore. Inqubo iqala ngokufaka insimbi emazingeni okushisa aphezulu, imvamisa phakathi kuka-1 000 kuya ku-1,200 degree