Spinel
 | MgAl2O4MgAl₂O₄
This sample of spinel is displayed in the Smithsonian Museum of Natural History. Spinel is an oxide of magnesium and aluminum with the composition MgAl2O4 . This sample is about 8x8 cm and is from Antanimora, Madagascar. 这种尖晶石样品陈列在史密森尼自然历史博物馆中。尖晶石是一种镁和铝的氧化物，化学式为MgAl₂O₄。该样品尺寸约为8x8厘米，来自马达加加的Antanimora地区。
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 This sample is spinel with calcite and is from Mogok, Burma. It is about 7x7 cm. 这种样本是含方解石的磁铁矿，来自缅甸莫戈克。尺寸约为7x7厘米。 |
 These spinel gems are 36.1 and 34.1 carats and are from Burma. "It is easy to confuse red spinels with rubies. They are found in similar places and have similar properties. The Black Prince Ruby in the British Crown Jewels is really a spinel! Impurities create many colors of spinel; red from chromium is the most prized." 这些尖晶石宝石重36.1和34.1克拉，来自缅甸。很容易将红色尖晶石与红宝石混淆。它们出现在相似的地点，具有相似的性质。英国王室珠宝中的黑王子红宝石实际上就是一颗尖晶石！杂质使尖晶石呈现出多种颜色，其中红色来自铬的尖晶石最为珍贵。 |
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These red spinel samples are from Mogok, Burma. The largest sample is about 3cm tall. 这些红色的磁铁矿样品来自缅甸莫格克。最大的样品高约3厘米。 |
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These spinel gems are 29.7, 22.2, 45.8 and 22.1 carats. They are from Sri Lanka. 这些尖晶石宝石重29.7、22.2、45.8和22.1克拉。它们来自斯里兰卡。 |
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At left is a bracelet with spinel crystals in it. It is from Burma. 左边是一枚镶嵌着石榴石晶体的手镯，它来自缅甸。 The right sample of spinel is from Orange County, New York. It is formed with hornblende and measures about 5x5 cm. 右样本为来自纽约橙县的磁铁矿石，其成分含角闪石，尺寸约为5x5厘米。 |
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Mindat: Spinel
| Minerals
矿物 |
| HyperPhysics*****Geophysics
HyperPhysics ***** 地球物理学 | R Nave |