Liottite
Liottite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na₁₆Ca₈Si₁₈Al₁₈O₇₂(SO₄)₅Cl₄.
It crystallizes in the hexagonal crystal system (space group P-6). It is a member of the Cancrinite-sodalite structural group.
Key properties: Mohs hardness 5; specific gravity 2.56; optically uniaxial.
IMA symbol Lio, IMA status: approved, named in 1975.
Found in cavities in ejecta blocks of metasomatized carbonate rocks in a pumice deposit.
It is found associated with Melilite, latiumite, clintonite, anorthite, vesuvianite, grossular, andradite, pyroxene.
The name refers to mineral collector Luciano Liotti, who donated the specimen in which this mineral was first found.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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