| Mineral | Sigloite |
|---|---|
| Formula | Fe3+Al2(PO4)2(OH)3 · 7H2O |
| Crystal Form | Triclinic/Pinacoidal [1] |
| Cleavage | Perfect on {010}, good on {001} |
| Color | Light brown, Straw-yellow |
| Density | 2.4 – 2.4 g/cm3 |
| Diaphaneity | Semitransparent |
| Hardness | 3.0 |
| Lustre | Vitreous - Pearly |
| Streak | White |
| Type Loc. | Siglo Veinte Mine, Llallagua, Rafael Bustillo Province, Potosí Department, Bolivia |
| Dana 8 Class | 42.11.14.3 |
| Strunz Class | 7/D.10-40 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 416 |