Formula: Zn2(Te3O8)
Reflected/transmitted colour: RL Gray wih no internal reflections
Pleochroism: Weak
Optical isotropy/anisotropy: Weak, n (calculated) = 2.06 from Gladstone-Dale relationship
Optical sign:
Refractive indices:
Bireflectance/Birefringence δ: Weak
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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