Rhabdophane-(Ce)

General Information:
 Chemical Formula:
(Ce,La)PO4·(H2O)
 Composition:
(Molecular Weight = 252.80 gm)
Lanthanum 13.74 % La
Cerium 41.57 % Ce
Phosphorus 12.25 % P 
Hydrogen 0.80 % H 
Oxygen 31.64 % O 
 Empirical Formula:
Ce0.75La0.25(PO4)·(H2O)
 IMA Status:
Approved IMA 1979
Physical Properties:
 Cleavage:
None
 Color:
white, brownish white, yellowish white, or pinkish white.
 Density:
4
 Diaphaniety:
Translucent
 Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Mammillary - Larger "breast-like" rounded forms resembling botryoidal (e.g. malachite)., Encrustations - Forms cr ust-like aggregates on matrix.
 Hardness:
3.5 - Copper Penny
 Luminescence:
Non-fluorescent.
 Luster:
Greasy (Oily)
 Streak:
white
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