Bauranoite

General Information:
 Chemical Formula:
BaU2O7·4-5(H2O)
 Composition:
(Molecular Weight = 806.45 gm)
Barium 17.03 % Ba
Uranium 59.03 % U 
Hydrogen 1.12 % H 
Oxygen 22.82 % O 
 Empirical Formula:
BaU2O7·4.5(H2O)
 Environment:
Secondary mineral replacing uraninite.
 IMA Status:
Approved IMA 1972
 Locality:
TL: U-Mo deposit in Russia.
 Name Origin:
Named for its composition of (Ba)(Urano)ite.
Physical Properties:
 Color:
reddish brown.
 Density:
5.28 - 5.42, Average = 5.35
 Hardness:
5 - Apatite
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