Formula: Na4Zr2Si10O26·9(H2O)
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.533, β = 1.559, γ = 1.567
Bireflectance/Birefringence δ: 0.034
2V angle: 56.2° (calculated), 63° (measured)
Dispersion: Weak
Optical orientation:
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 |