Formula: NaAlZr(PO4)2(OH)2.H2O
Reflected/transmitted colour:
Pleochroism:
Optical isotropy/anisotropy: Biaxial
Optical sign: ?
Refractive indices: a=1.62, g=1.64
Bireflectance/Birefringence δ: 0.02
2V angle:
Dispersion:
Optical orientation: Parallel extinction, length slow, X || fiber length, Z || fiber length
Optical axial plane:
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