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Staurolite
- Translations : スタウロライト
- Etymology : Du grec "stauros" = croix et "lithos" = pierre
- Discovery: 1792 by Le minéralogiste français Jean-Claude Delamétherie, qui lui a donné le nom de staurolite
Gemological data
- Chemical formula : (Fe2+,Mg2+,Zn2+,Co2+)4Al18Si8O46(OH)2
- Hardness (Mohs) : 7 - 7.5
- Density : 3.7
