General Information:
Chemical Formula:K2CaU++++++6O20·9(H2O)
Composition:(Molecular Weight = 2,028.57 gm)Potassium 3.85 %
K Calcium 1.98 %
CaUranium 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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