Unclassified silicate, leifite group
Specific gravity: 2.57
Common impurities: Ti,Fe,Mn,Zn,Mg,K,H2O
Plutonic igneous environments
Leifite occurs in cavities in alkali-pegmatite veins (Webmin).
At the Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Quebec, Canada, leifite is associated with an intrusive alkalic gabbro - syenite complex. Associated minerals include rhodochrosite and serandite (HOM).
At the type locality, the Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland, leifite occurs in the pegmatite associated with microcline, aegirine, zinnwaldite and calcite (HOM).
At the Shomiokitovoe pegmatite, Umbozero mine, Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia, leifite occurs in a differentiated alkalic massif, associated with albite and natrolite (HOM).
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