hematites

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

mineral oxido de hierro

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

Vinony's link graph records 1,008 inbound references to hematites, 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.

Vinony links it to 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 · Español

La hematita, hematites, oligisto o acerina es la forma mineral del óxido férrico, cuya fórmula es Fe2O3.Su nombre se remonta a los años 300-325 a. C. cuando Teofrasto la denominó «αιματίτις λίθος» (aematitis lithos), en griego ‘piedra de sangre’. Traducido en el año 79 por Plinio el Viejo como haematites (‘parecida a la sangre’), en alusión al vívido color rojo de su polvo; es posiblemente el primer mineral cuyo nombre lleva el habitual sufijo -ita.La forma moderna de su nombre evolucionó simplificando su ortografía, excluyendo la primera «a» (hematites).

Abstract from DBpedia / Wikipedia · CC BY-SA