Sahamalite-(Ce)

General Information:
 Chemical Formula:
(Mg,Fe++)Ce2(CO3)4
 Composition:
(Molecular Weight = 552.46 gm)
Cerium 50.72 % Ce
Magnesium 3.30 % Mg
Iron 2.53 % Fe
Carbon 8.70 % C 
Oxygen 34.75 % O 
 Empirical Formula:
Mg0.75Fe2+0.25Ce2(CO3)4
 Environment:
Rare earth carbonates.
 IMA Status:
Approved IMA 1987
 Locality:
Sulfide Queen mine, Mountain Pass, San Bernardino Co., Calif.
Physical Properties:
 Cleavage:
[010] Indistinct
 Color:
colorless.
 Density:
4.3
 Diaphaniety:
Transparent
 Streak:
white
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