Formula: CuAsO3OH
Reflected/transmitted colour:
Pleochroism: Colourless or light blue (x), light blue (y), blue (z)
Optical isotropy/anisotropy: Biaxial
Optical sign: -
Refractive indices: a = 1.615, b = 1.660, g = 1.700
Bireflectance/Birefringence δ: 0.085
2V angle: 84° (calculated), 82° (measured)
Dispersion: Medium, r > v
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 |