Characterization of passivating coatings on gold grains from carbon in leach (CIL) residue sample by TOF-SIMS - Surface Science Western

Request for analysis: Recovery efficiency during the leaching process of an ore sample containing free gold is low. Examine the surface of unleached free gold grains found in the CIL residue tails for the presence of passivating coatings. Objectives: Methodology: Individual free gold grains were selected under the optical stereo microscope from both feed and CIL residue samples and mounted on an indium substrate. Surface spectra and images of selected surface species present on these gold...