Barite thin section

  • Before-Barite #1
    After-Barite #1
    N //Barite #1N +
  • Before-Barite #2
    After-Barite #2
    N //Barite #2N +
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General

Formula: BaSO4

Crystal system: Orthorhombic

Distinguishing features

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N // (PPL)

Color: colourless, pale yellow, pale green, pale brown

Pleochrosim: none to very weak

Relief: moderate

Cleavage: four cleavage directions, including perfect {001} cleavage

N + (XPL)

Isotropy/Anisotropy: anisotropic

Interference color: IV

Extinction angle: symmetrical to cleavage traces

Twins: present

Uniaxial/biaxial: Uniaxial (-)

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