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Roger Weller, geology instructor
Chemical Group: oxide
Chemical Formula: FeTiO3
Color: iron black Streak: submetallic, black to brownish red
Luster: sub-metallic Fracture: conchoidal
Hardness: 5 to 6
Specific Gravity: 4.5 to 5
Transparency: opaque Magnetism: slightly magnetic
Crystals are usually thick tabular; may also be acute rhombohedral.
Commonly occurs in massive form or as sand grains.
Identifying Characteristics: resembles hematite, but has a black streak;
also resembles magnetite but is only very slightly magnetic
Uses: ore of titanium
Occurrences: Adirondack region, New York; also Norway and England
Toxicity: when inhaled-