Formula: Cu5(SeO3)2O2Cl2
Origin of name: For Prof. Dr. Georgiy Borisovich Bokii (1909-) for his contributions to crystal chemistry and mineralogy.
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 6.045, b = 13.778, c = 5.579, β = 95.76°
Colour: Chestnut brown, dark brown
Diaphaneity: Translucent
Luster: Vitreous-adamantine
Habit: Euhedral crystals, microscopic
Hardness: 4
Specific gravity:
Cleavage: [010] perfect, [100] very good
Tenacity: Sectile
Streak: Yellowish brown
Synonyms/varieties:
Comments:
| Back to Alphabetical list | Colour photos | Optical properties/Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |