| Mineral | Kidwellite |
|---|---|
| Formula | NaFe3+9(PO4)6(OH)11 • 3H2O |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Perfect on {100} |
| Color | Greenish yellow, Greenish white, Yellow, Light green |
| Density | 3.0 – 3.3 g/cm3 |
| Diaphaneity | Translucent |
| Fracture | Splintery |
| Hardness | 3.0 |
| Lustre | Resinous, Waxy, Silky, Dull |
| Streak | Yellow |
| Dana 8 Class | 42.8.2.1 |
| Strunz Class | 7/D.11-140 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 296 |