Yttrocrasite-(Y)

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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