| Anthoinite | |
| Formula: | AlWO(OH) |
| Imasymbol: | Atn |
| Color: | White (when free of iron) |
| Mohs: | 1 |
| Luster: | Dull |
| Streak: | White |
| Diaphaneity: | Translucent |
| Gravity: | 4.78 - 4.87 |
| Density: | 4.78 - 4.87 g/cm3 (Measured) 4.84 g/cm3 (Calculated) |
Anthoinite (IMA symbol: Atn[1]) is an aluminium tungsten oxide mineral with the chemical formula AlWO(OH). Its type locality is Maniema in the Democratic Republic of the Congo.[2]