| Mineral | Elpidite |
|---|---|
| Formula | Na2ZrSi6O15 • 3H2O |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Cleavage | Perfect on {110} |
| Color | White, Colorless, Yellowish, Pale-to-bright orange, Brownish yellow, Beige, Green, Brick-red |
| Density | 2.5 – 2.6 g/cm3 |
| Diaphaneity | Opaque to Transparent |
| Fracture | Splintery |
| Hardness | 5.0 |
| Lustre | Silky, Vitreous to Waxy or Dull |
| Type Loc. | Narsaarsuk pegmatite, Narsaarsuk Plateau, Igaliku, Narsaq, Kujalleq, Greenland |
| Dana 8 Class | 72.5.4.2 |
| Strunz Class | 8/F.23-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 353 |