Kamphaugite-(Y)

General Information:
 Chemical Formula:
Ca(Y,REE)(CO3)4(OH)2·3(H2O)
 Composition:
(Molecular Weight = 484.63 gm)
La,Ce,Pr,Nd,Sm,14.86 % RE
Calcium 8.27 % Ca
Yttrium 9.17 % Y 
Hydrogen 1.66 % H 
Carbon 9.91 % C 
Oxygen 56.12 % O 
 Empirical Formula:
CaY0.5REE0.5(CO3)4(OH)2·3(H2O)
 IMA Status:
Approved IMA
Physical Properties:
 Cleavage:
None
 Color:
brown, colorless, white, or light yellow.
 Density:
3.19
 Diaphaniety:
Transparent
 Hardness:
2-3 - Gypsum-Calcite
 Luster:
Vitreous (Glassy)
 Streak:
white
More details...