Ion Microprobe Silver Isotopic Analysis in Native Silver

摘要

Mass and energy spectra of native silver minerals from ore deposit Ducat were studied with the Cameca ims-4f ion microprobe. SIMS depth profiles of ~(107)Ag~+ and ~(109)Ag~+ secondary ions and ~(109)Ag~+/~(107)Ag~+ ratio were measured. The change of this ratio in studied minerals and difference of the shape of energy spectra of ~(107)Ag~+ and ~(109)Ag~+ secondary ions were found. It was revealed that these parameters depend on temperature conditions of minerals formation. A model explaining the observed effects is discussed.