Formula: Ba5(PO4)3Cl
Reflected/transmitted colour: colourless
Pleochroism:
Optical isotropy/anisotropy: uniaxial
Optical sign: -
Refractive indices: ω = 1.700, ε = 1.700
Birefringence δ:
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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