It was named in 1866 by Charles Friedel french chemist and mineraologist after Gilbert Joseph Adam french mineral collector (wealthy consultant of the French Ministy of Finance), who discovered this rare mineral. Mostly it has an intense yellowish green colour, but with more copper it is green (kuproadamite), with kobalt it’s colour is pink-purple (kobaltadamite). It can be found in long, tabular, grainy, tressy or rounded shapes. Usually it is secondary mineral in oxidized zones of Zincmetal but it also occurs in hidrotermal zones. Localities: Chanarcillo-Chille, Laurion-Greece, Cap Garonne-France, Ojuela mine Mapimí-Mexico, Tsumeb-Namibia, etc.