单词 | cassiterite |
释义 | Word Frequency cassiterite(kəˈsɪtəˌraɪt) noun a black or brown mineral, found in igneous rocks and hydrothermal veins. It is a source of tin. Composition: tin oxide. Formula: SnO2. Crystal structure: tetragonal Also called: tinstoneWord origin C19: from Greek kassiteros tin |
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