troctolite
/ˈtrɒktəʊlaɪt/noun
mass noun
- Geology gabbro made up mainly of olivine and calcic plagioclase, often having a spotted appearance likened to a trout's back【地质】橄长岩。
词源
late 19th cent.: from German Troklotit, from Greek trōktēs, a marine fish （taken to be 'trout'）.