Sazykinaite-(Y)

sazykinaite-(Y)

labuntsovite

lomonosovite

pectolite

Images

Formula: Na₅YZrSi₆O₁₈.6H₂O
Cyclosilicate (ring silicate), hilairite group, yttrium- and zirconium- bearing mineral
Crystal System: Trigonal
Specific gravity: 2.67 measured, 2.74 calculated
Hardness: 5
Streak: White
Colour: Light green to yellow
Solubility: Stable in water but readily soluble in 10% hydrochloric and nitric acids (Dana)
Environments

Pegmatites

Localities

At the type locality, the Koashva Open Pit, Koashva Mt, Khibiny Massif, Murmansk Oblast, Russia, sazykinaite-(Y) occurs in pegmatites intergrown with labuntsovite and associated with aegirine, natrolite, K-feldspar, pectolite, alkali amphibole, astrophyllite, lomonosovite and sphalerite (Dana).

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