Calamine - Calamine was the name of the mineral Hemimorphite before it was found in individual crystals, when it only occurred in globular masses. Smithsonite, which resembles Hemimorphite, was also frequently called Calamine. This led to great confusion differentiating two minerals identical in appearance. Therefore, all countries and mineral organizations have agreed to drop the name Calamine and only use the scientifically correct names of Hemimorphite and Smithsonite. Nevertheless, the name Calamine is still seen, especially in European countries.