What is "aplowite"

n. (context mineral English) A monoclinic-prismatic pink mineral containing cobalt, hydrogen, manganese, nickel, oxygen, and sulfur.

Aplowite is a very rare mineral with the formula CoSO•4HO, a naturally occurring cobalt(II) sulfate tetrahydrate. It is the lower hydrate when compared to bieberite (heptahydrate) and moorhouseite (hexahydrate), and a higher hydrate when compared to cobaltkieserite (monohydrate). It occurs together with moorhouseite within efflorescences.