cobalt
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/cobalt
Within scheme: South Australian Commodity Codes
Cobalt is a chemical element with symbol Co and atomic number 27. Like nickel, cobalt in the Earth's crust is found only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.