| Mineral | Chiavennite |
|---|---|
| Formula | CaMnBe2Si5O13(OH)2 • 2H2O |
| Crystal Form | Orthorhombic/Pyramidal [mm2] |
| Cleavage | Perfect on {100}, {010}, {001} |
| Color | Pale orange-yellow, Red-orange |
| Density | 2.6 – 2.6 g/cm3 |
| Diaphaneity | Translucent |
| Hardness | 3.0 |
| Lustre | Vitreous, Pearly |
| Streak | White to pale ocher |
| Type Loc. | Tanno, Chiavenna, Valchiavenna, Sondrio Province, Lombardy, Italy |
| Dana 8 Class | 70.5.1.1 |
| Strunz Class | 8/G.07-20 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 351 |