General Information:
Chemical Formula:
(Th,U,Ca)Ti2(O,OH)6
Composition:
(Molecular Weight = 390.82 gm)
Calcium 2.05 % Ca
Thorium 23.75 % Th
Uranium 24.36 % U
Titanium 24.50 % Ti
Hydrogen 0.77 % H
Oxygen 24.56 % O
Empirical Formula:
Th0.4U0.4Ca0.2Ti2O3(OH)3
Environment:
In microcline veins cutting a nephelene syenite.
Locality:
Somewhere in Russia.
Name Origin:
Named for the composition (Thorium, rutile).
Physical Properties:
Cleavage:
None
Color:
black or dark brown.
Density:
5.82
Diaphaniety:
Translucent
Hardness:
4.5-5.5
Luster:
Resinous
Streak:
light brown
More details...