General Information:
Chemical Formula:
Ca(Nd,Ce,La)2(CO3)3F2
Composition:
(Molecular Weight = 555.09 gm)
Calcium 7.22 % Ca
Lanthanum 20.02 % La
Cerium 10.10 % Ce
Carbon 6.49 % C
Neodymium 23.39 % Nd
Oxygen 25.94 % O
Fluorine 6.85 % F
Empirical Formula:
CaNd0.9Ce0.4La0.8(CO3)3F2
IMA Status:
Not Approved
Locality:
Bayan Obo iron-rare earth deposit, Inner Mongolia, China.
Name Origin:
Named as the Nd-rich end member of the parisite series, named for J. J. Paris, mine proprietor at Muzon, norht of Bogota, Columbia.
Physical Properties:
Cleavage:
[???] Good
Color:
brownish yellow.
Density:
4.2 - 4.5, Average = 4.34
Diaphaniety:
Transparent
Hardness:
4-5 - Fluorite-Apatite
Luster:
Vitreous (Glassy)
Streak:
white
More details...