详细解释:n. 橄榄岩
英语解释：
名词 peridotite:
a dark coarse-grained igneous rock consisting principally of olivine详细解释：
per.i.do.tite
n.（名词）Any of a group of igneous rocks composed mainly of olivine and various pyroxenes and having a granitelike texture.橄榄岩：含有大量橄榄石和各种辉石并有花岗岩状质地的岩石