Formula: Ba(UO2)2(PO4)2.12H2O
Reflected/transmitted colour:
Pleochroism: Colourless (X), pale canary yellow (Y,Z)
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: a = 1.574, b = 1.583, g = 1.588
Bireflectance/Birefringence δ: 0.014
2V angle: 72 (calculated), 70 (measured)
Dispersion:
Optical orientation:
Optical axial plane:
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