General Information:
Chemical Formula:PbU++++++4O13·4(H2O)
Composition:(Molecular Weight = 1,439.37 gm)Uranium 66.15 %
U Hydrogen 0.56 %
H Lead 14.40 %
PbOxygen 18.90 %
O Empirical Formula: PbU4O13·4(H2O)
Locality:Shinkolobwe mine, Shaba, Zaire.
Name Origin:Named for Emile Richet (1884-1938), chief geologist, Union Miniere du Haut Katanga.
Physical Properties: Cleavage:[001] Perfect, [010] Fair
Color:black.
Habits:Pseudo Hexagonal - Crystals show a hexagonal outline., Tabular - Form dimensions are thin in one direction.,
Hardness:3.5 - Copper Penny
Luster:Adamantine
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