Formula: V4V2O13.8H2O
Origin of name: from composition, vanadium and oxygen
Crystal system: Trigonal?
Crystal class: unknown
Twinning:
Unit cell:
Colour: Black, brownish black
Diaphaneity: Opaque, transparent in thin fragments
Luster: Metallic
Habit: Crystals with rhombohedral aspect, microscopic, massive, a cement in sandstone, disseminated
Hardness:
Specific gravity:
Cleavage: none
Tenacity:
Streak: Brownish black
Synonyms/varieties: Kentsmithite
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 |