Formula: C
Reflected/transmitted colour: colourless
Pleochroism:
Optical isotropy/anisotropy: isotropic
Optical sign:
Refractive indices: n = 2.4354
Bireflectance/Birefringence δ: anisotropic birefringence when strained
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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