辉石辉绿岩的英文怎么说
辉石辉绿岩的英文: n. 辉石 An igneous rock consisting chiefly of pyroxene and nepheline. Having a texture composed of lath - shaped plagioclase crystals in a matrix of pyroxene crystals. A usually coarse - grained igneous rock composed chiefly of calcic plagioclase and pyroxene. Ultrabasic rocks have a silica content less than 45%. Peridotite is the typical intrusive rock which consists of olivine and pyroxene. A light green,monoclinic pyroxene mineral,CaMgSi2O6,used as a gemstone and refractory. n. 辉绿岩 |