Agrinierite

Agrinierite (K2(Ca,Sr)(UO2)3O3(OH)2·5H2O) is a mineral often found in the oxidation zone of uranium despoits. It is named for Henry Agrinier, an engineer for the Commissariat à l'Énergie Atomique.
See more at Wikipedia.org...

General Information:
 Chemical Formula:
(K2,Ca,Sr)U3O10·4(H2O)
 IMA Status:
Approved IMA 1971
 Locality:
TL: France, Margnac mn, Compreignac
Physical Properties:
 Cleavage:
[???] Distinct
 Color:
orange.
 Density:
5.62 - 5.7, Average = 5.66
 Diaphaniety:
Translucent
 Habits:
Lamellar - Thin laminae producing a lamellar structure., ,
More details...