Indium tends to occur in nature with base metals such as copper, silver, zinc, cadmium, tin, lead, and bismuth. As a mineral, indium can be found in sphalerite (ZnS), galena (PbS), cassiterite (SnO 2), the stannite group, and roquesite (CuInS 2).. According to USGS (), indium is recovered as a by-product of refinery of other base …