Formula: Ba(CrO4,SO4)
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: +
Refractive indices: α = 1.952, β = 1.96, γ = 1.977
Bireflectance/Birefringence δ: 0.025
2V angle: 70° (calculated), 35-57° (measured)
Dispersion:
Optical orientation:
Optical axial plane:
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