尖晶石 Spinel
（重定向自Spinel rubies）
![](/Images/godic/202502/12/Spinel25726.jpg")
![切割的尖晶石](/Images/godic/202502/12/Spinelgem5726.JPG")
![](/Images/godic/202502/12/Spinel5726.jpg")
![Structure cristalline du spinelle MgAl2O4, vue le long de la direction [110]. Les atomes de magnésium sont représentés en jaune, ceux d'aluminium en gris et ceux d'oxygène en rouge.](/Images/godic/202502/12/Spinel_structure5726.png")
尖晶石是一类矿物的总称，具有通式XY2O4，为等轴晶系，氧原子为立方紧密堆积，X与Y占晶格中的部分八面体和四面体空隙。X、Y可以是二价、三价或四价的阳离子，通常为镁、锌、铁、锰、铝、铬、钛和硅。尖晶石中的氧也可为其他氧族元素所替代。
尖晶石也可指这一类化合物中的一种，镁铝尖晶石，成分为MgAl2O4。
Spinel rubies
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Spinel 尖晶石
（重定向自Spinel rubies）
Spinel /ˈspɪnɛl/ is the magnesium aluminium member of the larger spinel group of minerals. It has the formula MgAl2O4 in the cubic crystal system. Its name comes from Latin "spina" (arrow). Balas ruby is an old name for a rose-tinted variety.
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