Sodalite thin section

  • Before-Sodalite #1
    After-Sodalite #1
    N //Sodalite #1N +
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General

Formula: Na8Al6Si6O24Cl2

Crystal system: Isometric

Distinguishing features

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N // (PPL)

Color: colourless, gray or pale blue

Pleochrosim:

Relief: low

Cleavage: poor on {110}; usually not seen in thin section

N + (XPL)

Isotropy/Anisotropy: isotropic

Interference color:

Extinction angle:

Twins:

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