mineral
Hematite
Iron(III) oxide (Fe2O3)
AI-generated identification · may be incorrectHardness of 5.5 to 6.5 on the Mohs scale, metallic to dull black or gray color, and a distinctive reddish-brown streak. It crystallizes in the trigonal system and has a specific gravity of around 5.3.
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Physical properties
Hardness of 5.5 to 6.5 on the Mohs scale, metallic to dull black or gray color, and a distinctive reddish-brown streak. It crystallizes in the trigonal system and has a specific gravity of around 5.3.
Formation & geological history
Forms in diverse geological environments, particularly through aqueous processes and hydrothermal veins, as well as in banded iron formations dating back over 2 billion years.
Uses & applications
Primary ore of iron for steel production, widely used in pigments, radiation shielding, and carved into ornamental jewelry or polished worry stones.
Geological facts
Hematite produces a striking blood-red streak when scratched on an unglazed porcelain plate, which is its most reliable diagnostic feature despite its metallic gray surface appearance.
Field identification & locations
Found worldwide with major deposits in Australia, Brazil, China, and the Lake Superior region of North America; identified instantly by its high density and reddish streak.
