euchroite
noun
eu·chro·ite
ˈyükrōˌīt
plural -s
: a mineral Cu2(AsO4)(OH).3H2O consisting of a basic copper arsenate in emerald-green orthorhombic crystals (hardness 3.5–4, specific gravity 3.39)
Word History
Etymology
German euchroit, from Greek euchroos well-colored (from eu- + -chroos -chroous) + German -it -ite