How to Identify Hematite: Properties & Lookalikes

Dark metallic and reddish-brown hematite-turgite mineral specimen — Hematite-turgite specimen; source image resized and re-encoded for web displayPhoto: James St. John · CC BY 2.0 · Wikimedia Commons

Classification

What is hematite?

Hematite is ferric iron oxide. Mixtures with clay, silica, goethite, magnetite, or other minerals alter hardness, luster, density, and magnetic response.

Appearance

What does hematite look like?

Hematite occurs as steel-gray plates, shiny botryoidal masses, earthy red pigment, oolitic grains, and dense iron ore. Crystal form alone is therefore unreliable.

Weathering may create earthy coatings on other rocks. A coating can leave a red streak without the whole specimen being massive hematite.

Field tests

Identification tests

Begin with observation and use the least destructive test first. Results can change with weathering, mixtures, coatings, and grain size. Review the step-by-step field-test methods before altering an unfamiliar specimen.

Streak

Red to reddish-brown

The most useful field test across metallic and earthy varieties.

Hardness

Variable, commonly about 5 to 6.5

Earthy aggregates may be much softer than crystals.

Magnetism

Usually weak or absent

Strong attraction suggests magnetite or a mixture.

Density

Dense when massive and relatively pure

Clay-rich earthy material may feel lighter.

Useful procedures: Mineral streak test · Mohs hardness test · Mineral magnetism test · Specific gravity and density test

Comparison

Common lookalikes

Magnetite

Has a black streak and is strongly magnetic.

Goethite

Commonly leaves yellow-brown to brown streak and forms different weathering textures.

Ilmenite

Usually black-streaked and weakly magnetic, without hematite’s diagnostic red streak.

Geologic origin

How does it form?

Hematite forms in oxidizing sedimentary, hydrothermal, volcanic, metamorphic, and weathering environments.

It is abundant in banded iron formations and can replace or develop from other iron minerals during oxidation.

Where it occurs

Geologic setting and occurrence

Hematite occurs in iron formations, red beds, hydrothermal deposits, volcanic rocks, soils, and weathered zones.

A red-streaking coating may be thin and secondary. Examine a fresh interior before calling an entire specimen hematite-rich.

Human use

Uses and significance

Hematite is a principal iron ore and has long been used as red pigment. Specular varieties are also collected and used decoratively.

Safety and limits

Field notes

Use an unglazed streak plate; color on skin or paper is less controlled.
Avoid breathing iron-rich mine dust.
Dense iron oxide is not a meteorite merely because it attracts a magnet weakly.

This guide supports preliminary field identification, not a laboratory determination, appraisal, hazard assessment, or statement of ownership or collecting permission. Verify land status and local rules before handling or collecting material.

Source basis

Authoritative sources

LithoMap wrote this guide in original language using the scientific concepts and physical-property standards supported by these sources.

Minerals and their physical properties U.S. National Park Service
Mohs Hardness Scale U.S. National Park Service
Natural Gemstones: Mineral Gemstones U.S. Geological Survey

Editorial review: September 17, 2026.

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