Mineralpedia Details for Aegirine
Named for Norse-Scandinavian sea-god Aegir, as the mineral was first described from Norway where the mineral’s two co-type localities lie at Rundemyr, and Laven. Aegirine is relatively common and widespread, and can be found in additional localities in Sweden, Spain, Russia, Greenland, Tanzania, Malawi, the United States, and Canada, among several others. It occurs commonly in alkalic igneous rocks, carbonatites, pegmatites, regionally metamorphosed schist, gneiss, iron formations, blueschist facies rocks, granulites as a result of sodium metasomatism, and as an authigenic mineral in shale and marl. Dark green acicular micro crystals in low silica igneaous rocks. Also as prismatic deep green crystals up to 5cm or more or radial groups embedded in matrix.
Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/aegirine.pdf
- Crystal System
- Crystal Habit
- Distinct, Distinct, None
- Vitreous - Resinous
- green, greenish black, reddish brown, black
- yellowish gray
- Monoclinic - Prismatic
- View Aegirine
- View Aegirine
Aegirine from Bigwood Township, Sudbury, Ontario, Canada
Green, long acicular crystals to 1cm in divergent patterns.
Aegirine from Mount Malosa, Zomba Plateau, Malawi
Dark green, almost black prismatic crystals to 1.2cm with white Microcline matrix.
Aegirine from Poudrette quarry, Mont Saint-Hilaire, Montérégie, Québec, Canada
Lustrous deep green to nearly black prismatic crystals to 4cm in Albite matrix.