| Mineral | Decrespignyite-(Y) |
|---|---|
| Formula | Cu(Y,REE)4(CO3)4Cl(OH)5 • 2(H2O) |
| Crystal Form | Monoclinic/Unknown |
| Cleavage | None |
| Color | Royal blue, Turquoise blue, Pale blue |
| Density | 3.6 g/cm3 |
| Diaphaneity | Transparent |
| Hardness | 4.0 |
| Lustre | Vitreous - Pearly |
| Streak | Pale blue |
| Type Loc. | Paratoo copper mine, Yunta, Olary Province, SA, Australia |
| Dana 8 Class | 16a.1.11.1 |
| Strunz Class | V/E.07-30 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 133 |