| Name: | Tephroite Tep |
| IMA Chemistry: | Mn2+2(SiO4) |
| Chemistry Elements: | The mineral Tephroite contains elements: Manganese (Mn) Silicon (Si) Oxygen (O) |
| Country of Type Locality: | USA |
| Year First Published: | 1823 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Breithaupt J F A (1823) Tephroit, in Vollständige Charakteristik des Mineral-Systems, Arnoldischen Buchhandlung (Dresden) 278-279 |
| Structural Group Name: | Olivine |
| Fleischer's Group Name: | olivine |
| Crystal Systems: | orthorhombic |
| Oldest Known Age: | 2500 Million Years Ago |
| Mohs Hardness: | 6.0 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 3.995 |
| More Info: | Search Wikipedia: Tephroite (Wiki) Search Mindat: Tephroite Search Web Mineral DB: Tephroite |