| Spriggite | |
| Category: | Uranyl hydroxide mineral |
| Formula: | Pb3(UO2)6O8(OH)2·3H2O |
| Imasymbol: | Sgg[1] |
| Strunz: | 4.GC.15 |
| System: | Monoclinic |
| Class: | Prismatic (2/m) (same H-M symbol) |
| Symmetry: | C2/c |
| Color: | bright orange |
| Cleavage: | distinct/ good on (100) |
| Fracture: | irregular/ uneven |
| Tenacity: | brittle |
| Mohs: | 4 |
| Luster: | vitreous |
| Streak: | pale orange |
| Diaphaneity: | transparent |
| References: | [2] [3] |
Spriggite is an uranyl hydroxide mineral with chemical formula Pb3(UO2)6O8(OH)2·3H2O. Its type locality is Mt Painter region, Arkaroola region, Flinders Ranges, South Australia. It was named after Reginald C. Sprigg (1919–1994).