Formula: Ba3Ce2(CO3)5F2
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.598-1.604, β = 1.735, γ = 1.74-1.748
Bireflectance/Birefringence δ: 0.142-0.144
2V angle: 20-32° (calculated), 5° (measured)
Dispersion:
Optical orientation:
Optical axial plane:
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