Leucite thin section

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

Formula: KAl(Si2O6)

Crystal system: Hexagonal

Distinguishing features

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N // (PPL)

Color: colorless

Pleochrosim:

Relief: weak

Cleavage:

N + (XPL)

Isotropy/Anisotropy: anisotropic

Interference color: I

Extinction angle: inclined

Twins: lamellar twinning (a bit like microcline); often forming concentrically or at 60° angles

Uniaxial/biaxial: Uniaxial (+)

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