Small amounts of cobalt compounds are found in rocks, plants and animals but they are always found in conjunction with other elements and never alone. Cobalt is frequently associated with nickel and both of these elements can be found in meteoric iron. Metallic cobalt has two crystallographic structures, which are hcp and fcc. Cobalt is protected from oxidation by a passivating oxide film which makes it a weakly reducing metal. At regular temperatures Cobalt reacts slowly to mineral acids.
Cobalt Oxide is mainly useful as a coloring agent and is an inorganic compound that has a beautiful olive green or red color.
Cobalt Hydroxide is useful as a drying agent in paints and inks as well as in battery manufacturing. It has two main colors, a rose-red color and a bluish green color.
Cobalt Sulfate is useful in the manufacturing of glass, pigments, batteries and more. This mineral is also water soluble which makes it useful in Inks and soil additives.
Cobalt is a hard silverfish metal that is useful in jewelry making and even vitamins. With it’s varied usefulness it has become something that we all interact with on a daily basis.