li·beth·en·ite \lə̇ˈbethəˌnīt\noun (-s) Etymology: German libethenit, from Libethen, Czechoslovakia + German -it -ite : an olive green orthorhombic mineral Cu2(PO4)(OH) consisting of a basic copper phosphate and occurring in small prismatic crystals or in globular or reniform masses (hardness 4, specific gravity 3.6-3.8)