Formula: NaCrS2
Reflected/transmitted colour: yellow gray to light gray
Pleochroism: distinct, pale yellow to gray in air, pale yellow with a greenish tint to gray in oil
Optical isotropy/anisotropy:
Optical sign:
Refractive indices:
Bireflectance/Birefringence δ:
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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