Kasatkinite
Kasatkinite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ba₂Ca₈B₅Si₈O₃₂(OH)₃·6H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/c).
Key properties: Mohs hardness 4–4.5; specific gravity 2.95; White streak; Vitreous to silky luster; optically biaxial.
IMA symbol Ksk, IMA status: approved, named in 2011.
Of hydrothermal origin in cavities in rhodingite.
It is found associated with Prehnite, pectolite, calcite, clinochlore; or grossular, diopside, chrysotile, pectolite, minerals of the tobermorite and hydrotalcite families.
The mineral was named to honor Russian amateur mineralogist and mineral collector Anatoly V. Kasatkin (b. 1970).
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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