| Mineral | Hydromagnesite |
|---|---|
| Formula | Mg5(CO3)4(OH)2 ยท 4H2O |
| Crystal Form | Monoclinic/Prismatic [2/m] |
| Cleavage | Perfect on {010} |
| Color | Colorless to White |
| Density | 2.2 g/cm3 |
| Diaphaneity | Transparent |
| Fracture | Brittle |
| Hardness | 3.5 |
| Lustre | Vitreous, Silky, Pearly, Earthy |
| Streak | White |
| Type Loc. | Castle Point, Hoboken, Bergen Hill, Hudson Co., NJ, USA |
| Dana 8 Class | 16b.7.1.1 |
| Strunz Class | 5/E.01-10 |
| Mindat | mindat.org |
| WebMineral | WebMineral |
| ID | 398 |