单词 | schorl |
释义 | Word Frequency schorl(ʃɔːl) noun a black tourmaline consisting of a borosilicate of sodium, iron, and aluminium. Formula: NaFe3B3Al3(Al3 Si6O27)(OH)4 Derived forms schorlaceous (schorˈlaceous) adjective Word origin C18: from German Schörl, origin unknown |
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