| Mineral | Gmelinite-Na |
|---|---|
| Formula | (Na2,Ca)[Al2Si4O12] • 6(H2O) |
| Crystal Form | Hexagonal/Dihexagonal Dipyramidal [6/m 2/m 2/m] |
| Cleavage | [1010] Good, [0001] Parting |
| Color | White, Reddish white, Pink, Greenish white, Flesh red |
| Density | 2.0 – 2.2 g/cm3 |
| Diaphaneity | Transparent to Translucent |
| Fracture | Brittle - Uneven |
| Hardness | 4.5 |
| Lustre | Vitreous - Dull |
| Streak | White |
| Dana 8 Class | 77.1.2.6 |
| Strunz Class | VIII/J.26-50 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 122 |