Chemistry:Cadwaladerite
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Cadwaladerite | |
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Yellow microcrystals and masses of the very rare aluminium chloride-hydroxide mineral Cadwaladerite from only one the three known localities worldwide: Maria Mine, Caleta Vítor District, Arica & Parinacota Region, Chile. | |
General | |
Category | Halide mineral |
Formula (repeating unit) | AlCl(OH)2·4(H2O) |
Strunz classification | 3.BD.05 |
Crystal system | amorphous |
Identification | |
Formula mass | 168.51 g/mol |
Color | Lemon yellow |
Fracture | Conchoidal |
|re|er}} | Vitreous |
Diaphaneity | transparent |
Specific gravity | 1.66 |
Optical properties | Isotropic |
Refractive index | n = 1.513, variable |
Other characteristics | deliquescent |
References | [1][2][3][4] |
Cadwaladerite is a rare aluminium halide mineral with formula: AlCl(OH)2·4(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.[2][3][4] It was first described in 1941 for an occurrence in mine dumps of the Victoria Segunda mine Cerros Pintados, Iquique province, Tarapacá Region, Chile .[3] It was named for Charles Meigs Biddle Cadwalader, president of the Academy of Natural Sciences.[4] Lesukite was discredited (IMA2018-H).
References
- ↑ Mineralienatlas
- ↑ Jump up to: 2.0 2.1 Cadwaladerite Mineral Data - Webmineral
- ↑ Jump up to: 3.0 3.1 3.2 Cadwaladerite mineral information and data - Mindat.org
- ↑ Jump up to: 4.0 4.1 4.2 Handbook of Mineralogy
- ↑ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode: 2021MinM...85..291W.
Original source: https://en.wikipedia.org/wiki/Cadwaladerite.
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