Greenockite, also known as "cadmium ochre", was used as a yellow pigment prior to cadmium being recognized as a toxic element. The extracted cadmium has various industrial use, such as electrical nickel-cadmium (NiCd) rechargeable batteries, electroplating, high temp alloys, plating steel and other metals that corrode easily, and use in control rods for some nuclear reactors.
Mindat http://www.mindat.org/min-1746.html ↩
"Glasgow museum site". Archived from the original on 2012-07-16. Retrieved 2005-08-02. https://web.archive.org/web/20120716222609/http://www.hmag.gla.ac.uk/John/huntmin/greenock.htm ↩