Formula: Ca6Mg2(SO4)2(CO3)2Cl4(OH)4·7H2O
Reflected/transmitted colour: RL Pink with lilac tinge in air.
Pleochroism: RL weak to distinct, from brownish pink to pinkish lilac.
Optical isotropy/anisotropy: RL distinct to moderate, from light brown to dark blue.
Optical sign:
Refractive indices:
Bireflectance/Birefringence δ: RL weak to distinct, brownish pink to pinkish lilac.
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 |