Potassium butyl xanthate o se fa'afefete fa'afefeteina ma le malosi o le aoina mai, lea e fa'aaogaina lautele i fefiloi fefiloi o sulfide u'amea eseese.O lenei oloa e sili ona talafeagai mo le faʻafefeteina o le chalcopyrite, sphalerite, pyrite, ma isi. I lalo o tulaga faʻapitoa, e mafai ona faʻaaogaina e sili atu le faʻafefeteina o le kopa sulfide mai le sulfide iron ore, poʻo le filifilia o le sphalerite faʻaagaoioia e le kopa sulfate mo le faʻafefe.