Cadmium is Obtaed as a By-Product of the Smeltg and Refg of Sulphide Ores. The only cadmium meral of any economic importance is that of Greenockite (CdS) that is mostly associated with sphalerite (ZnS).
Cadmium is not med, but it is a by-product of the smeltg of other metals such as zc, lead, and copper. Cadmium is used nickel-cadmium rechargeable batteries and for metal platg. It also is used some pats, plastics, and metal solders.