Mineral - Francevillite
Francevillite
Chemical Properties
Mineral Class
Vanadates
Toxicity
radioactive
Formula
Ba(UO₂)₂(VO₄)₂ · 5H₂O
Unit Cell
Physical Properties
Hardness
3
Streak
yellow
Density
Cleavage
Fracture
Tenacity
Optical Properties
Color
brownorangeyellowgreen
Birefringence
Luster
Adamantine,
Pearly
Transparency
Pleochroism
Geomineralogical Properties
Crystal System
orthorhombic
Point Group
Space Group
Habit
sheaf-shaped, Rhombohedron, tabular
Formation
Oxidationszone von Uran-Lagerstätten
Paragenesis
Twinning
Rarity
Very rare
Synonyms
Francevillite