What is "libethenite"

Libethenite \Li*beth"en*ite\ (l[i^]*b[e^]th"[e^]n*[imac]t), n. [From Libethen, in Hungary, where it was first found.] (Min.) A mineral of an olive-green color, commonly in orthorhombic crystals. It is a hydrous phosphate of copper.

n. (context mineralogy English) A rare copper phosphate hydroxide mineral that forms striking dark green orthorhombic crystals.

Libethenite is a rare copper phosphate hydroxide mineral. It forms striking, dark green orthorhombic crystals. It was discovered in 1823 in Ľubietová, Slovakia and is named after the German name of that locality (Libethen).