Formula: K2CrO4
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: α = 1.687, β = 1.722, γ = 1.731
Bireflectance/Birefringence δ: 0.044
2V angle: 52° (calculated), 52° (measured)
Dispersion: Weak, r > v
Optical orientation: X = c, Y = a, Z = b
Optical axial plane:
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