dumortierite
/djuːˈmɔːtɪəraɪt/noun
mass noun
- a rare blue or violet mineral occurring typically as needles and fibrous masses in gneiss and schist. It consists of an aluminium and iron borosilicate.蓝线石。
词源
late 19th cent.: from the name of V.-E. Dumortier (1802-76), French geologist, + -ITE1.