Formula: Ca6Si2(CO3)2(SO4)2(OH).24H2O
Reflected/transmitted colour: Colourless
Pleochroism:
Optical isotropy/anisotropy: Uniaxial
Optical sign: -
Refractive indices: ω = 1.498-1.507 ε = 1.458-1.470
Bireflectance/Birefringence δ: 0.037-0.040
2V angle:
Dispersion:
Optical orientation:
Optical axial plane:
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