Silinaite
Silinaite is an IMA-recognized mineral species in the silicate class, with the chemical formula NaLiSi₂O₅·2H₂O.
It crystallizes in the monoclinic crystal system (space group A2/n).
Key properties: Mohs hardness 4.5; specific gravity 2.24; White streak; Vitreous to earthy luster; optically biaxial.
IMA symbol Sln, IMA status: approved, named in 1990.
Found in sodalite syenite xenoliths in nepheline syenite in an intrusive alkalic gabbro-syenite complex.
It is found associated with Ussingite, terskite-(Ce), s¶erandite, vuonnemite, halite, villiaumite, thermonatrite, aegirine.
The name refers to SIlicon, LIthium, and sodium, NAtrium, in the composition.
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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