Formula: Ag3AuS2
Reflected/transmitted colour: RL gray-white
Pleochroism: RL weak to distinct, pale gray to pale gray with a brownish tint
Optical isotropy/anisotropy: RL strong, without distinct colours
Optical sign:
Refractive indices:
Bireflectance/Birefringence δ:
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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