aegirite

[ ey-guh-rahyt, ee-juh- ]
/ ˈeɪ gəˌraɪt, ˈi dʒə- /

noun

a mineral, mainly sodium-ferric iron silicate, NaFe⋅(Si2O6), occurring in feldspathoid rocks in slender prismatic crystals.
Also ae·gir·ine [ey-guh-reen, ee-juh-] /ˈeɪ gəˌrin, ˈi dʒə-/.

Origin of aegirite

First recorded in 1830–40; Aegir + -ite2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019