Gemenge aus natürlich vorkommenden chemischen Verbindungen des Eisens und nicht- oder kaum eisenhaltigem Gestein.
Roche contenant du fer, généralement sous la forme d'oxydes.
Roccia nella quale il ferro si forma generalmente sotto forma di ossidi.
2023-10-23T10:03:42.2643280Z
https://www.termdat.bk.admin.ch/entry/66831
swisstopo, Geologischer Atlas der Schweiz, 110 Frick - Erläuterungen, 2006, S. 7
U. S. Geological Survey, National Minerals Information Center > Iron Ore Statistics and Information ([Internet, 2023-09-25](https://www.usgs.gov/centers/national-minerals-information-center/iron-ore-statistics-and-information))
CF, Rapp. Le secteur suisse des matières premières: état des lieux et perspectives, 2018-11-30, pag. 13, fig. 2 ([Internet, 2023-09-25](https://www.newsd.admin.ch/newsd/message/attachments/55061.pdf))
UFS, KUBB - Applicazione di supporto alla codificazione > NOGA > 241000 Attività siderurgiche ([Internet, 2023-09-25](https://www.kubb-tool.bfs.admin.ch/it/code/241000))
Iron ore is a mineral substance which, when heated in the presence of a reductant, will yield metallic iron (Fe). It almost always consists of iron oxides, the primary forms of which are magnetite (Fe3O4) and hematite (Fe2O3).
EXP: die natürlichen Eisenverbindungen werden Eisenerzminerale genannt; diese sind bei den wirtschaftlich bedeutenden Lagerstätten meist Eisenoxide oder Eisencarbonate (Siderit)
EXP: ossidi come magnetite ed ematite o come siderite carbonato
nach Wikipedia, Eisenerz, 2023-08-24 ([Internet, 2023-09-25](https://de.wikipedia.org/wiki/Eisenerz))
it.dreamstime.it, I minerali di ferro, 2023 ([Internet, 2023-09-25](https://it.dreamstime.com/i-minerali-di-ferro-sono-rocce-dalle-quali-il-metallico-pu%C3%B2-essere-ottenuto-modo-economicamente-sostenibile-%C3%A8-generalmente-image185407796#:~:text=%C2%A9%20Roberto%20Junior-,I%20minerali%20di%20ferro%20sono%20rocce%20dalle%20quali%20il%20ferro,ematite%20o%20come%20siderite%20carbonato))
Wikipedia, Eisenerz, 2023-08-24 ([Internet, 2023-09-25](https://de.wikipedia.org/wiki/Eisenerz))
Wikipédia, Minerai de fer, 2023-07-28 ([Internet, 2023-09-25](http://fr.wikipedia.org/wiki/Minerai_de_fer))
secondo it.dreamstime.it, I minerali di ferro, 2023 ([Internet, 2023-09-25](https://it.dreamstime.com/i-minerali-di-ferro-sono-rocce-dalle-quali-il-metallico-pu%C3%B2-essere-ottenuto-modo-economicamente-sostenibile-%C3%A8-generalmente-image185407796#:~:text=%C2%A9%20Roberto%20Junior-,I%20minerali%20di%20ferro%20sono%20rocce%20dalle%20quali%20il%20ferro,ematite%20o%20come%20siderite%20carbonato))