Formula: Al(UO2)2(PO4)2(OH).8H2O
Reflected/transmitted colour:
Pleochroism: Colourless (x), pale yellow (z)
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.573, β = 1.583, γ = 1.588
Bireflectance/Birefringence δ: 0.015
2V angle: 70° (calculated), 70° (measured)
Dispersion:
Optical orientation:
Optical axial plane:
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