Formula: CaMg(CO3)2
Reflected/transmitted colour: colourless
Pleochroism: -
Optical isotropy/anisotropy: uniaxial
Optical sign: -
Refractive indices: ε =1.500- (1.520), w = 1.679-(1.703)
Birefringence δ: 0.179-(0.185)
2V angle:
Dispersion: strong
Optical orientation:
Optical axial plane:
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