Formula: (Ca,Ce)(Nb,Ta,Ti)2O6
Reflected/transmitted colour: Yellow
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: +
Refractive indices: a = 2.14, g = 2.315
Bireflectance/Birefringence δ: 0.175
2V angle: Large (measured)
Dispersion: Extreme
Optical orientation: X = c, Y = b, Z = a
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 |