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Gahnite
- Translations : Gahnit, Gahnita, Ганит
- Synonym : Automalite, Automolite, Automolith, Dysluite, Fahlunite, Spinelle zincifère, Zinc spinel
- Etymology : Name given in honour of Swedish chemist and mineralogist Johan Gottlieb Gahn (1745 - 1818)
- Discovery: 1807 by Baron Karl Marie Ehrenbert von Moll
- Type localityFalun mine, Falun, Dalarna, Sweden
Gemological data
- Chemical formula : ZnAl2O4
- Hardness (Mohs) : 7 ,5 - 8
- Density : 4.62
- Refractive index : 1.79–1.80
- Crystal system : Cubique
- Group : Spinelle