hématite

Also known as blood stone, oligiste, raphisiderite, haematitis of Pliny, iron(3+);oxygen(2-), Hem, haematite

minéral

AI overview

Hematite is a common iron oxide mineral (Fe2O3) found widely in rocks and soils that crystallizes in a rhombohedral structure similar to corundum. It is industrially and scientifically important as a primary source of iron and has useful properties related to its distinctive crystal structure.

AI-generated from the Wikipedia summary — may contain errors.

In the Vinony graph

Within Vinony's link graph, hématite is referenced by 1,008 other articles, and connects out to beryl, Mohs scale of mineral hardness and iron ore.

It sits within the topics Glances, Hematite group and Iron(III) minerals.

Its subject is documented across 70 Wikipedia language editions.

Key facts

Mineral.boxtextcolor: FFFFFF
Mineral.boxbgcolor: 0e0d0b
Mineral.name: Hematite
Mineral.category: Oxide minerals
Mineral.image: WLA hmns Hematite.jpg
Mineral.imagesize: 260
Mineral.caption: Hematite crystals from Brazil
Mineral.formula: iron(III) oxide, Fe2O3, α-Fe2O3
Mineral.IMAsymbol: Hem
Mineral.strunz: 4.CB.05
Mineral.dana: 4.3.1.2
Mineral.symmetry: Rc (no. 167)
Mineral.unit cell: a = 5.038(2) Å; c = 13.772(12) Å; Z = 6
Mineral.color: Metallic grey, dull to bright "rust-red" in earthy, compact, fine-grained material, steel-grey to black in crystals and massively crystalline ores
Mineral.habit: Tabular to thick crystals; micaceous or platy, commonly in rosettes; radiating fibrous, reniform, botryoidal or stalactitic masses, columnar; earthy, granular, oolitic
Mineral.system: Trigonal
Mineral.class: Hexagonal scalenohedral (m) H–M symbol: ( 2/m)
Mineral.twinning: Penetration and lamellar

via Wikipedia infobox

Chemical data

Formula: Fe2O3
Molecular weight: 159.69 g/mol
IUPAC name: bis(iron(3+));tris(oxygen(2-))
SMILES: [O-2].[O-2].[O-2].[Fe+3].[Fe+3]
InChIKey: LIKBJVNGSGBSGK-UHFFFAOYSA-N
Polar surface area: 3 Å²
H-bond donors: 0
H-bond acceptors: 3
Formal charge: 0

via PubChem

Wikidata facts

Has part: iron(III) oxide
Named after: stone
Mass: 159.854619
Image: Hematite.jpg

Show 9 more facts

Nickel-Strunz '10th ed', review of (9th ed/ 2009 update): 4.CB.05
Commons category: Hematite
chemical formula: Fe₂O₃
Nickel-Strunz 9th edition (updated 2009): 4.CB.05
crystal system: trigonal crystal system
IMA Mineral Symbol: Hem
Mohs' hardness: 6.00
density: 5.10
Strunz 8th edition (series ID, updated): IV/C.04a

Sources (6)

via Wikidata · CC0

Article · Français

L’hématite est une espèce minérale composée d’oxyde de fer(III) de formule Fe2O3 avec des traces de titane Ti, d'aluminium Al, de manganèse Mn et d'eau H2O. C'est le polymorphe α de Fe2O3, le polymorphe γ étant la maghémite. C’est un minéral très courant, de couleur noire à gris argenté, brun à rouge, ou rouge, avec de nombreuses formes cristallines. Les cristaux peuvent atteindre 13 cm.

Abstract from DBpedia / Wikipedia · CC BY-SA