General Information:
Chemical Formula:
K2CaU++++++6O20·9(H2O)
Composition:
(Molecular Weight = 2,028.57 gm)
Potassium 3.85 % K
Calcium 1.98 % Ca
Uranium 70.40 % U
Hydrogen 0.89 % H
Oxygen 22.87 % O
Empirical Formula:
K2CaU6O20·9(H2O)
Environment:
On pitchblende.
IMA Status:
Approved IMA 1972
Locality:
Margnac uranium deposit, Haute Vienne, Massif Central, France.
Name Origin:
Named for Jacques Rameau (1926-1960), French prospector who discovered the deposit where the mineral occurs.
Physical Properties:
Cleavage:
[010] Good
Color:
orange.
Density:
5.6
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Pseudo Hexagonal - Crystals show a hexagonal outline.,
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