Deliensite

General Information:
 Chemical Formula:
Fe++(UO2)2(SO4)2(OH)2·3(H2O)
 Composition:
(Molecular Weight = 876.09 gm)
Uranium 54.34 % U 
Iron 6.37 % Fe
Hydrogen 0.92 % H 
Sulfur 7.32 % S 
Oxygen 31.05 % O 
 Empirical Formula:
Fe2+(UO2)2(SO4)2(OH)2·3(H2O)
 Environment:
Oxidized zone of an uranium depost.
 IMA Status:
Approved IMA (Dana # Added)
 Locality:
Mas D'Alary, Lodeve, Herault, France.
 Name Origin:
For Dr. Michel Deliens (1939-), Royal Belgian Instatute of Natural Sciences, Brunssels, in recognition oh his research on uranium bearing minerals.
Physical Properties:
 Cleavage:
[100] Perfect
 Color:
yellow, white, or grayish.
 Density:
3.268
 Diaphaniety:
Transparent to translucent
 Habits:
Spherical - Spherical, rounded aggregates., Aggregates - Made of numerous individual crystals or clusters.,
 Hardness:
2 - Gypsum
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
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