|Mineral class||Silicates : Nesosilicates : Olivine group.|
|Habitus||Crystals prismatic but very rare. Mostly as fine grained quartz like aggregates.|
|Cleavage|| indistinct, brittle, fracture conchoidal.|
|Color||Gray to grayish red, red, bluish red and yellowish green.|
|Luster||Vitreous to greasy, transparent to translucent.|
|Occurance||Occurs in mangan scarn.|
|Associates||Richterite, Rhodonite, Schefferite.|
|Notes||Named after the Greek word "tephros" meaning ash gray.|
|Locations|| An international rare mineral with a few
good localities in Sweden. |
| To silicate index.
|| Mineral group index.
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