Colour: Colourless, pale pink, brownish, red-brown
Sidorenkite is a rare mineral in syenite pegmatites (Webmin).
At the Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Quebec, Canada, occurs in
sodalite syenite xenoliths associated
with an intrusive alkalic gabbro-syenite
complex. Associated minerals include rasvumite,
ussingite and villiaumite
At the type locality, the Alluaiv Mountain, Lovozersky District, Murmansk Oblast, Russia, is a rare
low-temperature hydrothermal mineral, it occurs as a very late forming mineral in irregular grains and in crystals to 2 cm, in
pegmatites cutting cancrinite syenite.
It is associated with K-feldspar, nepheline,
sodalite and cancrinite, and is cut by
(AM 64.1332, HOM).
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