Formula: K2(UO2)2(AsO4)2.6H20
Reflected/transmitted colour:
Pleochroism: ω = yellow, ε = pale yellow to colourless
Optical isotropy/anisotropy: unaxial, anomalously biaxial
Optical sign: -
Refractive indices: ω = 1.597, ε = 1.570
Birefringence δ: 0.027
2V angle: ~ 5°
Dispersion:
Optical orientation:
Optical axial plane:
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