aegirine

(redirected from Aegerine)

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 ?
P-310: (Easting 428849, Northing 4896313) Light grey, hypidiomorphic-granular, medium grained, aegerine and riebeckite-bearing (~ 5%), syenite.
4 cm occur on microcline with aegerine (for which the locality is already famous).
They also had a football-size aegerine on feldspar specimen with undamaged aegerine crystals to 10 cm sitting on feldspar matrix.