| 单词 | magnetite | 
| 释义 | Word Frequency magnetite(ˈmæɡnɪˌtaɪt) noun a black magnetic mineral, found in igneous and metamorphic rocks and as a separate deposit. It is a source of iron. Composition: iron oxide. Formula: Fe3O4. Crystal structure: cubic  Derived forms magnetitic (ˌmæɡnɪˈtɪtɪk) adjective  | 
	
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