hornblende
/ˈhɔːnblend/noun
mass noun
- a dark brown, black, or green mineral consisting of a silicate of calcium, magnesium, and iron, occurring in many igneous and metamorphic rocks.普通角闪石（一种暗褐色、黑色或绿色矿石, 由含钙、锰和铁的硅酸盐组成, 出现于许多火成岩和变质岩中）。
词源
late 18th cent.: from German, from Horn 'horn'+blende （see BLENDE）.