Minerals

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General Information

Hematite

Hematite is a wide spread iron oxide mineral. It is usually found around magnetite, limonite and siderite. In its most pure form, hematite consists for 70% of iron and is therefore the most important iron ore. It is named after the Greek word 'haima', which means blood.[1]

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Chemical & Physical Information

Trivial NameHematite
Chemical NameIron(III) Oxide
Chemical FormulaFe2O3
Density5,25 g·cm-3
Molar mass-
Hardness5-5,6
Crytal systemTrigonal
Unit cell?
Crystal habitPyramidal, cubic, rhombohedral, rosette like groups, grainy and oolitic.
FractureConchoidal, fibrous.
CleavageNone
ColourGrey to black, red brown or weathered red.
LusterMetal to dull
StreakCherry red to red brown
OpacityOpaque
SafetySafe
ExtraPrime source of iron.
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Photos

Hematite

(1 cm)

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Sources

[1] Wikipedia

[2] Specimen from my personal collection, photo taken by me.