Formula: PbSiO3
Reflected/transmitted colour: colourless to white
Pleochroism:
Optical isotropy/anisotropy: biaxial
Optical sign: -
Refractive indices: a = 1.945-1.947, b = 1.955-1.961, g = 1.959-1.968
Birefringence δ: 0.012-0.023
2V angle: 65°
Dispersion: r < v, strong, weak inclined
Optical orientation: b = b
Optical axial plane:
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