Formula: Ca(UO2)2[SiO3(OH)]2 . 5H2O
Reflected/transmitted colour:
Pleochroism: Colourless (X), deep yellow (Y=Z)
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.661-1.671, β = 1.682-1.694, γ = 1.689-1.702
Bireflectance/Birefringence δ: 0.028-0.031
2V angle: 58-60° (calculated), 35-71° (measured)
Dispersion: Strong, r > v, crossed
Optical orientation: X = b, Z Ù c = 26°
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 |