Ilmenite

Ilmenite is a weakly magnetic titanium-iron oxide mineral which is iron-black or steel-gray. It is a crystalline iron titanium oxide (FeTiO3). It crystallizes in the trigonal system, and it has the same crystal structure as corundum and hematite.
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Noun
1. a weakly magnetic black mineral found in metamorphic and plutonic rocks; an iron titanium oxide in crystalline form; a source of titanium
(hypernym) mineral
(substance-meronym) titanium, Ti, atomic number 22

(n.)
Titanic iron. See Menaccanite.
  

General Information:
 Chemical Formula:
Fe++TiO3
 Composition:
(Molecular Weight = 151.73 gm)
Titanium 31.56 % Ti
Iron 36.81 % Fe
Oxygen 31.63 % O 
 Empirical Formula:
Fe2+TiO3
 Locality:
Ilmen Mountains, southern Urals, of the Russia.
 Name Origin:
Named after It's locality.
Physical Properties:
 Cleavage:
None
 Color:
iron black or black.
 Density:
4.72
 Diaphaniety:
Opaque
 Habits:
Tabular - Form dimensions are thin in one direction., Massive - Lamellar - Distinctly foliated fine-grained forms.,
 Hardness:
5-5.5 - Apatite-Knife Blade
 Luminescence:
None.
 Luster:
Sub Metallic
 Streak:
brownish black
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