General Information:
Chemical Formula:
(Y,Ca,Ce,U,Th)(Ti,Nb,Ta)2O6
IMA Status:
Approved IMA 1987
Physical Properties:
Cleavage:
None
Color:
black or brown.
Density:
4.97 - 5.04, Average = 5
Diaphaniety:
Subtranslucent to Opaque
Hardness:
5-6 - Between Apatite and Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Resinous
Streak:
brown
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