Table 3 QXRD analysis of the copper ore offcuts (not affected by EK-ISL treatment) and the ore sample after EK-ISL treatment.

*Cu minerals. The determined values after EK-ISL have been corrected for the mass loss due to the leaching process.

MineralIdeal formulaMass (wt %)#
Offcuts (untreated)Sample after EK-ISL
K-aluniteK(Al, Fe)3+3(OH)6(SO4)23.55.1
SiderotilFeSO4.5H2O1.10.5
Na-jarositeNa(Al, Fe)3+3(OH)6(SO4)21.10.7
PyrophylliteH2Al2O12Si410.14.4
QuartzSiO255.360.4
PyriteFeS25.52.5
Chalcopyrite*CuFeS218.27.6
Chalcocite*Cu2S0.81.3
Covellite*CuS2.60.0
MolybdeniteMoS20.30.4
IlliteK0.6(H3O)0.4Al1.3Mg0.3Fe2+0.1Si3.5O10(OH)2 ยท (H2O)1.61.0
Elemental sulfurS0.01.9