Senkevichite
Senkevichite is an IMA-recognized mineral species in the silicate class, with the chemical formula CsNaKCa₂TiOSi₇O₁₈(OH).
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: Mohs hardness 5.5–6; specific gravity 3.12; Vitreous luster; optically biaxial.
IMA symbol Sev, IMA status: approved, named in 2004.
Found in the moraine of a glacier.
It is found associated with Pectolite, quartz, aegirine, fluorite, polylithionite, neptunite, hyalotekite, baratovite, sokolovaite, pekovite.
The mineral was named to honor Yurii Alekseevich Senkevich (1937-2003), Russian geographer, medical officer, researcher on human behavior in extreme conditions, TV reporter and journalist.
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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