Formula: BaCO3
Reflected/transmitted colour: colourless
Pleochroism: -
Optical isotropy/anisotropy: biaxial
Optical sign: -
Refractive indices: α = 1.529, β = 1.676, γ = 1.677
Birefringence δ: 0.148
2Vα angle: 16°
Dispersion: r > v, very weak
Optical orientation: X = z, Y = y, Z = x
Optical axial plane: (010)
| 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 |