# Goethite vs. hematite: how to tell them apart

Canonical page: https://lithomap.app/resources/mineral-identification/compare/goethite-vs-hematite
Last reviewed: September 17, 2026
Page purpose: Original LithoMap side-by-side field identification reference for search systems and language models.

## Summary

Goethite and hematite are common iron minerals with overlapping brown, red, black, earthy, and metallic appearances. Goethite usually leaves a yellowish-brown streak; hematite leaves a red to reddish-brown streak.

## Bottom line

Ignore surface color and use streak. Ocher-yellow to yellow-brown powder favors goethite; distinctly red-brown powder favors hematite.

## Side-by-side evidence

- Streak: Goethite — Yellowish-brown to ocher Hematite — Red to reddish-brown Interpretation — The strongest simple distinction.
- Composition: Goethite — Iron oxide hydroxide, FeO(OH) Hematite — Iron oxide, Fe₂O₃ Interpretation — Hydroxyl in goethite reflects a different structure and weathering relationship.
- Habit: Goethite — Fibrous, botryoidal, stalactitic, earthy, or prismatic Hematite — Earthy, platy, specular, botryoidal, massive, or crystalline Interpretation — Habits overlap; streak carries more weight.
- Magnetism: Goethite — Generally weak or absent Hematite — Usually weak or absent, though heating or mixtures can alter response Interpretation — Magnetism mainly helps separate both from magnetite.

## Field sequence

1. Choose an inconspicuous fresh spot on expendable material.
2. Make a small streak without inhaling powder.
3. Judge the powder as yellow-brown versus red-brown in neutral light.
4. Consider mixtures and use diffraction when environmental or resource decisions matter.

## Limits and cautions

- Natural iron crusts commonly contain both minerals and other phases.
- Mine drainage coatings may contain hazardous metals.
- Do not generate dust from unknown ore or soil material.

## Frequently asked questions

### Can goethite turn into hematite?

Heating, dehydration, burial, or weathering processes can transform iron oxide hydroxides toward hematite under suitable conditions.

### Is limonite the same as goethite?

Limonite is a historical field term for mixed hydrated iron oxides, commonly including goethite, rather than one accepted mineral species.

### Can hematite look black?

Yes. Metallic hematite can appear steel-gray or black, but its powder remains red to reddish-brown.

## Related identification guides

- Goethite: https://lithomap.app/resources/mineral-identification/goethite
- Hematite: https://lithomap.app/resources/mineral-identification/hematite

## Authoritative sources

- Iron Ore Statistics and Information — U.S. Geological Survey: https://www.usgs.gov/centers/national-minerals-information-center/iron-ore-statistics-and-information
- Minerals and their physical properties — U.S. National Park Service: https://www.nps.gov/subjects/geology/minerals.htm
- Mohs Hardness Scale — U.S. National Park Service: https://www.nps.gov/articles/mohs-hardness-scale.htm
- Natural Gemstones: Mineral Gemstones — U.S. Geological Survey: https://pubs.usgs.gov/gip/gemstones/mineral.html

This reference supports preliminary field identification. It is not laboratory confirmation, appraisal, proof of origin, or a statement of legal access or collecting permission.