General Information:
Chemical Formula:
Fe+++4(VO4)4·5(H2O)
Composition:
(Molecular Weight = 773.22 gm)
Vanadium 26.35 % V
Iron 28.89 % Fe
Hydrogen 1.30 % H
Oxygen 43.45 % O
Empirical Formula:
Fe3+4(VO4)4·5(H2O)
Environment:
U-V deposits of the Colorado Plateau.
Locality:
Polar Mesa, Grand County, Utah, USA.
Name Origin:
Named for its composition.
Physical Properties:
Cleavage:
None
Color:
yellow, brown, or pale green.
Habits:
Fibrous - Crystals made up of fibers., ,
Luminescence:
Non-fluorescent.
Luster:
Adamantine
Streak:
yellowish brown
More details...