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Hematite, also spelled as haematite, ismon iron oxide with a formula called Fe2O3 and has been widespread in rocks and soils. Hematite forms in the shape of crystals through the rhombohedral lattice system, and it has the same crystal structure as ilmenite and corundum. Hematite and ilmenite formplete solid solution at temperatures above 950 °C 1,740 °F.
Hematite is colored black to steel or silver gray, brown to reddish brown, or red. It is mined as the main o