n.rare green to black mineral consisting of hydrated copper arsenate that is found in copper deposits
英汉双解大词典
olivenite/ɒˈlɪvɪˌnaɪt/
1.
N（名词）
a green to black rare secondary mineral consisting of hydrated basic copper arsenate in orthorhombic crystalline form. Formula: Cu2(AsO4)(OH) 橄榄铜矿