Formula: Cu26Fe4Ge4S32
Reflected/transmitted colour: opaque, polished section pinkish violet-gray, the colour turns bluish gray due to W, light brown due to Mo and yellow due to V substitution
Pleochroism:
Optical isotropy/anisotropy: polished section isotropic
Optical sign:
Refractive indices:
Birefringence δ/bireflectance:
2V angle:
Dispersion:
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 |