A mineral and one of the main iron ores, an iron oxide that is ferrimagnetic: attracted to a magnet and able to be magnetized into a permanent magnet itself. Apart from extremely rare native iron deposits it is the most magnetic of all naturally occurring minerals on Earth, and naturally magnetized pieces called lodestone are how ancient peoples first discovered magnetism. Its locked-in magnetization is also the record paleomagnetism reads. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
Formation ClassOxide mineral (iron oxide), forming as an accessory mineral in igneous and metamorphic rocks and as a major constituent of banded iron formations. 1 Chemical FormulaFe3O4 (iron(II,III) oxide) 1 Hardness (Mohs)Commonly cited range is 5.5 to 6.5 on the Mohs scale; 6.0, the midpoint, is used here. Classification
Crystal System Classification UseOre or Metal Extraction 1 Connections
Associated With
Magnetite and hematite are both principal iron oxide ore minerals.
Source Magnetite (Wikipedia)
Magnetite named as an important accessory mineral of slate.
Source Slate (Wikipedia)
Classified As
Entity-backed identity for the material classification this material already carries as an enum fact, pointing at the class subcategory of the same name. The enum fact itself stays on the entity unchanged.
Crystallizes In System
Entity-backed identity for the crystal-system enum value this material already carries, resolved to an earth concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The crystal-system fact itself stays on the material unchanged.
In Discipline
Magnetite is one of the two principal iron ore minerals, mined at industrial scale.
Source Magnetite (Wikipedia)
Source Magnetite (Wikipedia)
The magnetization magnetite locks in when it forms is the record paleomagnetism reads.
Source Magnetite (Wikipedia)
In the Other Atlases
- Also in Divinity Atlas: Lodestone, mineral species of there.
Sources
1. Magnetite (Wikipedia)
Wikimedia FoundationLead section
With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth.
Infobox
Mohs scale hardness: 5.5-6.5
Entity classification (SubLabel)
A mineral and one of the main iron ores, an iron oxide that is ferrimagnetic: attracted to a magnet and able to be magnetized into a permanent magnet itself. Apart from extremely rare native iron depo
Magnetite (Wikipedia), infobox
Crystal system: Isometric
Magnetite (Wikipedia), body text
magnetite has long been a major iron ore
In Discipline: Economic Geology, Uses section
Due to its high iron content, magnetite has long been a major iron ore.
View the Source Wikidata: Magnetite
Wikidata Q181395Quote, Wikidata Q181395
P279 subclass chain verified to reach rock (Q8063) or mineral (Q7946) within a few hops; identified via Wikipedia pageprops (article title match), PlaybookNote 38526.
Slate (Wikipedia)
Wikimedia FoundationAssociated With: Slate, Composition sectionQuote, Associated With: Slate, Composition section
The most important accessory minerals are iron oxides (such as hematite and magnetite), iron sulfides (such as pyrite), and carbonate minerals.
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