Formula: K(UO2)2SO4(OH)3.H2O
Reflected/transmitted colour:
Pleochroism: Colourless (x), pale yellow (y), yellow (z)
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.55-1.655, β = 1.717, γ = 1.765
Bireflectance/Birefringence δ: 0.115-0.215
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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