“spinel”的概念、定义、翻译、参考文献-科学参考

单词	spinel
释义	spinel [spǝ`nel] ^MINERALOGY 1. MgAl₂O₄ A colorless, purplish-red, greenish, yellow, or black mineral, usually forming octahedral crystals, and characterized by great hardness; used as a gemstone. 2. A group of minerals of general formula AB₂O₄, where A is magnesium, ferrous iron, zinc, or manganese, or a combination of them, and B is aluminum, ferric iron, or chromium.
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