aegirine


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aegirine

[′ā·gə‚rēn]
(mineralogy)
NaFe(SiO3)2 A brown or green clinopyroxene occurring in alkali-rich igneous rocks. Also known as aegirite.
References in periodicals archive ?
The most abundant intrusion present is grannaite, a medium grained syenite consisting of alkali feldspar, nepheline, aegirine, natrolite, eudialyte and catapleite.
Accessory minerals in the sample are dominated by aegirine (21.
REE-bearing eudialyte is weakly magnetic, and therefore reports to the magnetic fraction with mafic minerals in particular aegirine.