Formula: InAsO4.2H2O
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: +
Refractive indices: β = 1.65
Bireflectance/Birefringence δ:
2V angle: 55-76° (measured)
Dispersion:
Optical orientation:
Optical axial plane:
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