General Information:
Chemical Formula:
Pb2U5O17·4(H2O)
Composition:
(Molecular Weight = 1,948.60 gm)
Uranium 61.08 % U
Hydrogen 0.41 % H
Lead 21.27 % Pb
Oxygen 17.24 % O
Empirical Formula:
Pb2U5O17·4(H2O)
Name Origin:
Named after the French physicist, P. Curie.
Physical Properties:
Cleavage:
[100] Good, [110] Good
Color:
yellow, reddish orange, or brownish yellow.
Density:
7.19
Diaphaniety:
Transparent to Translucent
Habits:
Massive - Fibrous - Distinctly fibrous fine-grained forms., Acicular - Occurs as needle-like crystals., Encrustations - Forms crust-like aggregates on matrix.
Hardness:
4-5 - Fluorite-Apatite
Luster:
Adamantine
Streak:
orange
More details...