General Information:
Chemical Formula:(Y,Th,Ca,U)(Ti,Fe+++)2(O,OH)6
Environment:Precambrian granites, pegmatites, and metamorphic rocks. A doubtful mineral.
IMA Status:Approved IMA 1987
Locality:Three miles east of Barringer Hill, Llano Co. in Burnet Co., Texas, USA.
Name Origin:From the Greek for "mixture", because it is a mixture fo yttrium with many other elements.
Physical Properties: Cleavage:None
Color:black.
Density:4.8
Diaphaniety:Opaque
Habits:Metamict - Mineral originally crystalline, now amorphous due to radiation damage., ,
Hardness:5.5-6 - Knife Blade-Orthoclase
Luminescence:Non-fluorescent.
Luster:Resinous
Streak:reddish brown
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