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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