Wollastonite thin section

  • Before-Wollastonite #1
    After-Wollastonite #1
    N //Wollastonite #1N +
  • Before-Wollastonite #2
    After-Wollastonite #2
    N //Wollastonite #2N +
  • Before-Wollastonite #3
    After-Wollastonite #3
    N //Wollastonite #3N +
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General

Formula: CaSiO3

Crystal system: Triclinic

Distinguishing features

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N // (PPL)

Color: colourless; often with yellowish or brownish tint

Pleochrosim: none to weak

Relief: moderate

Cleavage: perfect on {100}, good on {001} and {-102}

N + (XPL)

Isotropy/Anisotropy: anisotropic

Interference color: I

Extinction angle: parallel / 0° / straight

Twins:

Uniaxial/biaxial: Biaxial (-)

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