aegirine

aegirite

[ey-guh-rahyt, ee-juh-]
noun
a mineral, mainly sodium-ferric iron silicate, NaFe⋅(Si 2 O 6 ), occurring in feldspathoid rocks in slender prismatic crystals.
Also, aegirine [ey-guh-reen, ee-juh-] .


Origin:
1830–40; Aegir + -ite2

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