Formula: Ca(UO2)2(AsO4)2.10H2O
Reflected/transmitted colour:
Pleochroism: Nearly colourless (X = E), pale yellow (Y=Z = O)
Optical isotropy/anisotropy: Uniaxial, commonly anomalously biaxial, may be zoned
Optical sign: -
Refractive indices: ω = 1.572-1.587, ε = 1.550-1.560; α = 1.56, β = 1.582, γ = 1.587
Bireflectance/Birefringence δ: 0.027
2V angle: 50° (calculated), 0-62° (measured)
Dispersion: Moderate, r > v
Optical orientation: X = c in biaxial material
Optical axial plane:
| Back to Alphabetical list | Colour photos | Physical, chemical and crystallographic description | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |