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Maghemite

Maghemite (Fe2O3, γ-Fe2O3) is a member of the family of iron oxides. It has the same formula as hematite, but the same spinel ferrite structure as magnetite (.mw-parser-output .template-chem2-su{display:inline-block;font-size:80%;line-height:1;vertical-align:-0.35em}.mw-parser-output .template-chem2-su>span{display:block;text-align:left}.mw-parser-output…

Applications, Occurrence & Electronic structure

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Occurrence

WeatheringOxidationLepidocrociteFerrihydritePigment
17 related topics

Applications

Néel temperatureNanoparticlesBiomedicine
3 related topics

Electronic structure

SemiconductorBandgapSpin
3 related topics

Cation distribution

Electrostatic energyCrystal
2 related topics

Key facts & relationships

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Category
Oxide minerals
Cleavage
None
Color
Brown, bluish black; brown to yellow in transmitted light; white to bluish gray in reflected light.
Crystal class
Gyroidal (432) (same H-M symbol)
Crystal habit
Rarely as minute octahedral crystals, or acicular overgrowths; commonly as coatings on or replacements of magnetite; massive.
Crystal system
Cubic with a tetragonal supercell

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Overview

Occurrence

Cation distribution

Electronic structure

Applications

As pollutant

Advanced semantic analysis

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Map overview Semantic statistics

Maghemite

Nodes41
Edges40
Triples32
Avg. degree1.95
Density0.04878
Components1

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Maghemite

Top relations

related to Occurrence · 9
Maghemite → California, II, Iron Mountain Mine, It, Leonora, Redding, Shasta County, The, Western Australia
related to As pollutant · 3
Maghemite → It, London Underground, The
Category · 1
Maghemite → Oxide minerals
Cleavage · 1
Maghemite → None
Color · 1
Maghemite → Brown, bluish black; brown to yellow in transmitted light; white to bluish gray in reflected light.
Crystal class · 1
Maghemite → Gyroidal (432) (same H-M symbol)
Crystal habit · 1
Maghemite → Rarely as minute octahedral crystals, or acicular overgrowths; commonly as coatings on or replacements of magnetite; massive.
Crystal system · 1
Maghemite → Cubic with a tetragonal supercell
Diaphaneity · 1
Maghemite → Opaque, transparent in thin fragments
Formula · 1
Maghemite → γ-Fe2O3

Important terminology Word statistics

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Important terminology

magnetite formula iron brown octahedral crystal also left structure ferrimagnetic minerals γ-fe2o3 hematite references particles fe ii iii occurrence distribution

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
MaghemiteCategoryOxide minerals1.00infobox
MaghemiteCleavageNone1.00infobox
MaghemiteColorBrown, bluish black; brown to yellow in transmitted light; white to bluish gray in reflected light.1.00infobox
MaghemiteCrystal classGyroidal (432) (same H-M symbol)1.00infobox
MaghemiteCrystal habitRarely as minute octahedral crystals, or acicular overgrowths; commonly as coatings on or replacements of magnetite; massive.1.00infobox
MaghemiteCrystal systemCubic with a tetragonal supercell1.00infobox
MaghemiteDiaphaneityOpaque, transparent in thin fragments1.00infobox
MaghemiteFormulaγ-Fe2O31.00infobox
MaghemiteFractureSubconchoidal1.00infobox
MaghemiteIMA symbolMgh1.00infobox
MaghemiteLusterDull1.00infobox
MaghemiteMohs scale hardness51.00infobox
MaghemiteOptical propertiesIsotropic1.00infobox
MaghemiteOther characteristicsStrongly magnetic1.00infobox
MaghemiteSpace groupP4132, P43321.00infobox
MaghemiteSpecific gravity4.860 (calculated)1.00infobox
MaghemiteStreakBrown1.00infobox
MaghemiteStrunz classification4.BB.151.00infobox
MaghemiteUnit cella = 8.33 Å; Z = 8 or a = 8.35 Å c = 24.99 Å; Z = 8 for tetragonal supercell1.00infobox

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