Table 4 Total element concentrations of crushed and milled offcuts (no EK-ISL treatment) and the ore sample after EK-ISL treatment using ICP-OES following borate fusion method (lithium borate flux).

The mass balance for Cu indicates Cu leached + residual Cu retained in the ore, as determined by total acid digestion = 9.26 g; initial Cu mass estimated by QXRD analysis for offcuts of the same drill core sample = 10.85 g. The values determined after EK-ISL have been corrected for the mass loss due to the leaching process.

SampleConcentration (%)
AlCaFeMgAuMoSiCuKS
Sample offcuts
(untreated)
5.450.059.480.030.010.0726.208.240.7213.40
Sample after
EK-ISL
5.120.054.600.010.010.1126.202.970.6810.28