Spinel
MgAl2O4
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Spinel is a magnesium aluminum oxide that forms beautiful crystals highly valued as gemstones. Many famous historical rubies, including the Black Prince's Ruby in the British Crown Jewels, are actually red spinels. Spinel occurs in metamorphosed limestones and basic igneous rocks.
| 晶系 | Cubic (Isometric) |
| 鉱物分類 | 04 Oxides and Hydroxides |
| モース硬度 | 7.5-8.0 |
| 比重 | 3.58-3.61 |
| 色 | Red, blue, green, black, colorless |
| 光沢 | Vitreous |
| 条痕色 | White |
| 劈開 | None |
| 断口 | Conchoidal |
| 透明度 | Transparent |
| 結晶習性 | Octahedral, massive |
モース硬度
Mohs Hardness: 7.5 – 8.0
1 Soft10 Hard
晶系
Cubic (Isometric)Explore on Science FYI
Frequently Asked Questions
What is the hardness of Spinel?
Spinel has a Mohs hardness of 7.5-8.0.
What crystal system does Spinel belong to?
Spinel crystallizes in the Cubic (Isometric) crystal system.
What color is Spinel?
Spinel is typically Red, blue, green, black, colorless.
What type of luster does Spinel have?
Spinel exhibits a Vitreous luster.
What is the chemical formula of Spinel?
The chemical formula of Spinel is MgAl2O4.