| Name: | Thaumasite Tma |
| IMA Chemistry: | Ca3Si(OH)6(CO3)(SO4)·12H2O |
| Chemistry Elements: | The mineral Thaumasite contains elements: Calcium (Ca) Silicon (Si) Oxygen (O) Hydrogen (H) Carbon (C) Sulfur (S) |
| Country of Type Locality: | Sweden |
| Year First Published: | 1878 |
| IMA Status: | Approved,Grandfathered |
| Status Notes: | Nordenskiöld A E (1878) Sur une nouvelle espèce minérale nommée thaumasite, Comptes Rendus Hebdomadaires des Séances de l’Académie des Sciences 87, 313-314 |
| Structural Group Name: | Ettringite |
| Fleischer's Group Name: | ettringite |
| Crystal Systems: | hexagonal |
| Oldest Known Age: | 2720 Million Years Ago |
| Mohs Hardness: | 3.5 |
| Diaphaneity: | 2.0 |
| Specific Gravity: | 1.8769999999999998 |
| More Info: | Search Wikipedia: Thaumasite (Wiki) Search Mindat: Thaumasite Search Web Mineral DB: Thaumasite |