Formula: Ag3Sb
Reflected/transmitted colour: opaque, polished section pure white (in air), in oil slightly grayer
Pleochroism: very weak
Optical isotropy/anisotropy: polished section weak to distinct anisotropic
Optical sign:
Refractive indices:
Birefringence δ/bireflectance: polished section weak, white to creamy white
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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