Formula: PbO
Reflected/transmitted colour: colourless to pale yellow, polished section gray-white
Pleochroism: β light sulfur yellow, γ deep yellow
Optical isotropy/anisotropy: biaxial, polished section obscured by internal reflections
Optical sign: +
Refractive indices: α = 2.51, β = 2.61, γ = 2.71
Birefringence δ/bireflectance: ~ 0.20, polished section not discernable
2V angle: ~ 90°
Dispersion: strong
Optical orientation:
Optical axial plane:
| Back to Alphabetical list | Colour photos | Physical, chemical and crystallographic description | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |