Spriggite
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).
| Spriggite | |
|---|---|
| General | |
| Category | Uranyl hydroxide mineral |
| Formula (repeating unit) | Pb3(UO2)6O8(OH)2·3H2O |
| Strunz classification | 4.GC.15 |
| Crystal system | Monoclinic |
| Crystal class | Prismatic (2/m) (same H-M symbol) |
| Space group | C2/c |
| Identification | |
| Color | bright orange |
| Cleavage | distinct/ good on (100) |
| Fracture | irregular/ uneven |
| Tenacity | brittle |
| Mohs scale hardness | 4 |
| Luster | vitreous |
| Streak | pale orange |
| Diaphaneity | transparent |
| References | [1][2] |
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