General Information:
Chemical Formula:
Fe++SnTa2O8
Composition:
(Molecular Weight = 664.45 gm)
Tantalum 54.47 % Ta
Iron 8.41 % Fe
Tin 17.87 % Sn
Oxygen 19.26 % O
Empirical Formula:
Fe2+SnTa2O8
IMA Status:
Approved IMA 1984
Physical Properties:
Cleavage:
None
Color:
dark brown or black.
Diaphaniety:
Transparent to Translucent
Hardness:
5.5 - Knife Blade
Luster:
Vitreous (Glassy)
Streak:
dark brown
More details...