Kolskyite
Kolskyite is an IMA-recognized mineral species in the silicate class, with the chemical formula (Ca )Ti₂Na₂Ti₂(Si₂O₇)₂O₄(H₂O)₇.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Seidozerite-Murmanite structural group.
Key properties: Mohs hardness 3; specific gravity 2.509; White streak; Vitreous luster; optically biaxial.
IMA symbol Ksy, IMA status: approved, named in 2013.
Formed in a pegmatite as a result of hydrothermal activity.
It is found associated with Natrolite, nechelyustovite, kazanskyite, barytolamprophyllite, hydroxylapatite, belovite-(La), belovite-(Ce), gaidonnayite, nenadkevichite, epididymite.
The name refers to the Kola Peninsula (Kolsky Poluostrov in Russian).
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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