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limoniet
Sign in to saveLimonite () is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in varying composition. The generic formula is frequently written as , although this is not entirely accurate as the ratio of oxide to hydroxide can vary quite widely. Limonite is one of the three principal iron ores, the others being hematite and magnetite, and has been mined for the production of iron since at least 400 BC.
Key facts
- Mineral.name
- Limonite
- Mineral.image
- LimoniteUSGOV.jpg
- Mineral.category
- Amorphous, mineraloid
- Mineral.strunz
- Unclassified
- Mineral.color
- Various shades of brown and yellow
- Mineral.habit
- Fine grained aggregate, powdery coating
- Mineral.cleavage
- Absent
- Mineral.fracture
- Uneven
- Mineral.mohs
- 4–5.5
- Mineral.luster
- Earthy
- Mineral.streak
- Yellowish brown
- Mineral.diaphaneity
- Opaque
- Mineral.gravity
- 2.9–4.3
- Mineral.density
- 2.7–4.3 g/cm3
via Wikipedia infobox
Wikidata facts
- Subclass of
- oxide class of minerals
- Named after
- wet meadow
- Image
- Limoniet 004.jpg
Show 5 more facts
- Commons category
- Limonite
- Commons gallery
- Limonite
- Mohs' hardness
- 3.75
- density
- 3.60
- crystal system
- orthorhombic crystal system
via Wikidata · CC0
Article · Nederlands
Het mineraal limoniet is een ijzer- en zuurstofhoudend hydroxide met de chemische formule FeO(OH)·nH2O. Dit mineraal mag echter niet verward worden met goethiet. Limoniet is de onvolkomen gekristalliseerde vorm van goethiet.
Abstract from DBpedia / Wikipedia · CC BY-SA