White crystal aggregates of the very rare mineral komarovite from the type locality (Karnasurt Mountain, Lovozero Massif, Northern Region, Russian Federation) and only one of the two known localities worldwide. — Photo: David Hospital · CC BY-SA 4.0
Komarovite
Komarovite is an IMA-recognized mineral species in the silicate class, with the chemical formula (Ca,Sr,Na)₆₋ₓ(Nb,Ti)₆(Si₄O₁₂)(O,OH,F)₁₆·nH₂O.
It crystallizes in the orthorhombic crystal system.
Key properties: Mohs hardness 1.5–2; specific gravity 3; White streak; Dull luster; optically biaxial.
IMA symbol Kmv, IMA status: approved, named in 1971.
With late albite and redeposited fine-grained natrolite in alkalic rocks in a differentiated alkalic massif.
It is found associated with Natrolite, albite.
The mineral was named to honor the Russian cosmonaut, Vladimir Mikhailovich Komarov (1927-1967).