| Mineral | Chestermanite |
|---|---|
| Formula | Mg2(Fe3+,Mn3+,Al,Sb3+)(BO3)O2 |
| Crystal Form | Orthorhombic/Dipyramidal [2/m 2/m 2/m] |
| Color | Grayish-green to black |
| Density | 3.6 – 3.7 g/cm3 |
| Fracture | Irregular/Uneven, Conchoidal |
| Hardness | 6.0 |
| Lustre | Vitreous, Silky |
| Streak | Pale grayish green |
| Type Loc. | Unnamed Skarn occurrence [1], Kaiser Wilderness area, Fresno Co., CA, USA |
| Dana 8 Class | 24.2.1.5 |
| Strunz Class | 6.AB.40 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 522 |