Na6ZnTi4Si8O28 . 4H2OFormula:
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.676, β = 1.746, γ = 1.795
Bireflectance/Birefringence δ: 0.119
2V angle: 76° (calculated), 77° (measured)
Dispersion:
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 |