General Information:
Chemical Formula:
(Y,Dy,Er,Yb,Gd,Ho,Tb,Sm)2Ti2SiO9
IMA Status:
Approved IMA
Physical Properties:
Color:
light brown.
Density:
5
Diaphaniety:
Transparent to Translucent
Hardness:
7 - Quartz
Luster:
Adamantine
Streak:
white
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