Spinel Group
Spinel Group is a mineral with the chemical formula MgAl2O4. It has a Mohs hardness of 7.5 - 8 on Mohs scale and vitreous to glassy luster.
Spinel Group properties
| Type | Mineral |
|---|---|
| Chemical formula | MgAl2O4 |
| Mohs hardness | 7.5 - 8 on Mohs scale |
| Luster | Vitreous to glassy |
| Typical colors | Red, blue, green, black, colourless |
| Formation | Typically forms in metamorphic rocks and in contact metamorphic environments |
| Rarity | 7 / 10 |
Mohs hardness 7.5–8 — hard
1 · Talc5 · Apatite10 · Diamond
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