| Chemical formula | Mg3Al2[SiO4]3 |
| Hardness | 6.5-7.5 |
| Density | |
| Color | Dark red. |
| Crystal form | Cubic. Usually rombdodecaedric or ikosatetraedric crystals. |
| Luster | glas. |
| Habitat | In eruptive rocks as peridotite and associated serpentinites. Also in kimberlite. |
| Associates | Diamonds. |
| Notes | Rare in Sweden. |
| Locations |
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| To silicate index. |
Mineral group index. |
Main index. |
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