Formula: AgBiTe2
Reflected/transmitted colour: RL pale purplish
Pleochroism: RL very slight in oil
Optical isotropy/anisotropy: RL very weak, pale pink to gray
Optical sign:
Refractive indices:
Bireflectance/Birefringence δ:
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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