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Formula: LiNa5(PO4)2
Anhydrous phosphate, lithium-bearing mineral
Crystal system: Orthorhombic
Specific gravity: 2.8 measured, 2.85 calculated
Hardness: 4
Streak: White
Colour: Colourless
Solubility: Easily soluble in cold water, decomposes rapidly in air
Environments
Olympite occurs as an ultra-alkalic phase in
nepheline syenite
pegmatites in differentiated alkalic
massifs
(HOM).
Localities
At the type locality, Rasvumchorr Mt, Khibiny Massif, Murmansk Oblast, Russia, olympite occurs as oval grains,
up to 5 mm in size, in a
nepheline syenite
pegmatite. Associated Minerals include
sidorenkite, dorfmanite,
nahpoite, villiaumite,
shafranovskite and aegirine
(Mindat).
At the Lovozero Massif, Murmansk Oblast, Russia, olympite is associated with
natrite and natrosilite
(HOM).
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