Cadwaladerite
| Cadwaladerite | |
|---|---|
| General | |
| Category | Halide mineral |
| Formula (repeating unit) | Al(OH)Cl2·4(H2O) |
| Strunz classification | 03.BD.05 |
| Identification | |
| Formula mass | 168.51 gm |
| Color | Lemon yellow |
| Fracture | Conchoidal |
| Luster | Vitreous |
| Diaphaneity | transparent |
| Specific gravity | 1.66 |
| Optical properties | Isotropic |
| Refractive index | n = 1.513, variable |
| Other characteristics | deliquescent |
| References | [1][2][3] |
Cadwaladerite is a rare aluminium halide mineral with formula: AlOHCl2·4(H2O). It was reported for an amorphous substance associated with sulfate minerals and embedded in a halite crystal cluster. Its status is uncertain due to inadequate data.[1][2][3]
It was first described in 1941 for an occurrence in mine dumps of the Victoria Segunda mine Cerros Pintados, Iquique province, Tarapacá Region, Chile.[2] Chile. It was named for Charles Meigs Biddle Cadwalader, president of the Academy of Natural Sciences.[3]
References
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