ematite

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

minerale

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.

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 · Italiano

L'ematite è un minerale del ferro (un ossido), abbastanza frequente in natura, appartenente all'omonimo gruppo. Il nome deriva dal greco αἷμα (haîma) - "sangue", dal colore rosso sangue che talvolta assume il minerale allo stato cristallino, mentre la sua polvere è sempre rossa. Secondo lo storico Teofrasto, la pietra sarebbe simile al sangue solidificato.

Abstract from DBpedia / Wikipedia · CC BY-SA

ematite

Key facts

Chemical data

Wikidata facts

Article · Italiano

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