Inosilicate (chain silicate)
Specific gravity: 3.42 to 3.45
Streak: White to pale brown
Colour: Pale purple-brown, pale pink to mauve, brown to black
Common impurities: Zr,Al,Y,TR,La,Ce,Fe,Nb,Mn,Ca,Sr,F,H2O
Lorenzenite occurs in nepheline syenites and their associated
pegmatites, associated with aegirine, nepheline,
titanite and ilmenite
The type locality is the Narssârssuk pegmatite, Narsaarsuk Plateau, Igaliku, Kujalleq, Greenland, Denmark.
At the Flora mountain (Selsurt mountain), Lovozero masssif, Murmansk Oblast, Russia, lorenzenite has been found in albite (FM 46606).
At the Lujavr-Urt (Lovozero) alkali massif, Russia, a specimen of coarse-grained nepheline syenites has, in addition to aegirine and microcline, eudialyte and ramsayite (lorenzenite) as its major components. The most common accessory mineral is aegirine (acmite) (AM 72.173-177)
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