Seeligerite

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Seeligerite
Seeligerita 01.JPG
Seeligerite crystals, from Sierra Gorda, Antofagasta Region, Chile.
General
CategoryIodate minerals
Formula 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

  1. ↑ 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.
  2. 1 2 3 Mindat with occurrence
  3. ↑ Webminera datal


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