Seeligerite
| Seeligerite | |
|---|---|
 Seeligerite crystals, from Sierra Gorda, Antofagasta Region, Chile. | |
| General | |
| Category | Iodate minerals |
| Formula (repeating unit) | Pb3Cl3(IO3)O |
| IMA symbol | Sli[1] |
| Strunz classification | 4.KB.15 |
| Crystal system | Orthorhombic |
| Crystal class | Disphenoidal (222) H-M symbol: (2 2 2) |
| Space group | C2221 |
| Identification | |
| References | [2][3] |
Seeligerite is a rare complex lead chloride iodate mineral with formula: Pb3Cl3(IO3)O. It is a yellow mineral crystallizing in the orthorhombic system. It has perfect to good cleavage in two directions and a quite high specific gravity of 6.83 due to the lead content. It is translucent to transparent with refractive indices of nα=2.120 nβ=2.320 nγ=2.320.[2]
It was first reported in 1971 from the Casucha Mine, Sierra Gorda, Antofagasta Region, Chile.[2]
References
[edit]- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
- ^ a b c Mindat with occurrence
- ^ Webminera datal
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