mineral
Hematite
Hematite (Fe2O3)
AI-generated identification · may be incorrectHardness 5.5-6.5, metallic to earthy luster, opaque, often steel-gray to black or red-brown color. High specific gravity.
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Physical properties
Hardness 5.5-6.5, metallic to earthy luster, opaque, often steel-gray to black or red-brown color. High specific gravity.
Formation & geological history
Forms in diverse environments including sedimentary, igneous, and metamorphic rocks. Often formed by the weathering of iron-bearing minerals or precipitation in banded iron formations.
Uses & applications
Primary ore of iron. Used in jewelry, polishing compounds, and as a pigment (red ochre).
Geological facts
Leaves a characteristic red or reddish-brown streak, which is a key diagnostic feature despite its metallic gray appearance.
Field identification & locations
Identified by its red streak and high density. Commonly found worldwide, notably in banded iron formations.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous
Septarian Pebble
Septarian nodule / Concretion
sedimentary