Iimoriite-(Y)

General Information:
 Chemical Formula:
Y2(SiO4)(CO3)
 Composition:
(Molecular Weight = 329.90 gm)
Yttrium 53.90 % Y 
Silicon 8.51 % Si
Carbon 3.64 % C 
Oxygen 33.95 % O 
 Empirical Formula:
Y2(SiO4)(CO3)
 IMA Status:
Approved IMA 1987
Physical Properties:
 Cleavage:
[011] Distinct
 Color:
brown, colorless, gray pink, white, or purple gray.
 Density:
4.47
 Hardness:
5.5-6 - Knife Blade-Orthoclase
 Luster:
Vitreous (Glassy)
 Streak:
white
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