Formula: SrCO3
Reflected/transmitted colour: colourless
Pleochroism: -
Optical isotropy/anisotropy: biaxial
Optical sign: -
Refractive indices: α = 1.517-1.520, β = 1.663-1.667, γ = 1.667-1.669
Birefringence δ: 0.149-0.150
2Vα angle: 7-10°
Dispersion: r < v, weak
Optical orientation: α = z, β = y, γ = x
Optical axial plane: (010)
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