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Aegirine - Sold

Aegirine is an iron sodium silicate mineral, a member of the pyroxene group (Morimoto et al. 1988). The mineral name alludes to Ægir, the Scandinavian sea-god, since the mineral was first found in Norway.

This is a lustrous black single crystal of aegirine. The interfacial angle approximating 90° distinguishes this crystal from the similar appearing species arfvedsonite. The crystal is doubly terminated; the terminations consists of parallel capillary crystals, much like the end of a brush.