| 单词 | sillimanite |
| 释义 | Word Frequency sillimanite(ˈsɪlɪməˌnaɪt) noun a white, brown, or green fibrous mineral that consists of aluminium silicate in orthorhombic crystalline form and occurs in metamorphic rocks. Formula: Al2SiO5 Word origin C19: named after Benjamin Silliman (1779–1864), US chemist |
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