| Mineral | Esperite |
|---|---|
| Formula | PbCa2Zn3(SiO4)3 |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Distinct on {010}, {100}, poor on {101} |
| Color | White, off-white, pale tan |
| Density | 4.3 – 4.4 g/cm3 |
| Diaphaneity | Transparent, Translucent |
| Fracture | Irregular/Uneven |
| Hardness | 5.0 |
| Lustre | Sub-vitreous, Greasy |
| Streak | White |
| Type Loc. | Parker Mine, Franklin Mine, Franklin, Franklin Mining District, Sussex Co., NJ, USA |
| Dana 8 Class | 51.2.1.3 |
| Strunz Class | 8/A.03-20 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 236 |