Formula: PbSnS2
Reflected/transmitted colour: RL bluish white with ubiquitous deep red to purplish red internal reflections
Pleochroism: RL none
Optical isotropy/anisotropy: RL moderate, in shades of gray
Optical sign: -
Refractive indices:
Bireflectance/Birefringence δ: RL very weak
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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