Khibinskite
Khibinskite is an IMA-recognized mineral species in the silicate class, with the chemical formula K₂ZrSi₂O₇.
It crystallizes in the monoclinic crystal system (space group P2_1/b).
Key properties: Mohs hardness 4.5–5.5; specific gravity 3.4; Dull or greasy luster; optically biaxial.
IMA symbol Khi, IMA status: approved, named in 1973.
Found in aegirine-rich metasomatic rocks in a differentiated alkalic massif.
It is found associated with Eudialyte, zircon.
The name is derived from the locality in the Khibiny massif, Kola Peninsula, Russia.
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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