16.63: Sodalite

Gemology · LibreTexts

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    From LibreTexts, under CC BY-NC-SA, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    Sodalite
    Chemical composition Sodium aluminum silicate
    Crystal system Cubic
    Habit Massive
    Cleavage Distinct, dodecahedral
    Fracture Conchoidal to uneven
    Hardness 5.5-6.0
    Refractive index 1.478-1.488
    Birefringence None
    Specific gravity 2.27
    Lustre Vitreous to greasy

    16.63: Sodalite is shared under a CC BY-NC-SA license and was authored, remixed, and/or curated by LibreTexts.