What is another word for greigite?
Pronunciation: [ɡɹˈe͡ɪd͡ʒa͡ɪt] (IPA) 
Greigite is a mineral with the chemical formula Fe3S4. It is a magnetic mineral and is often found in sediments and soils. Some synonyms for greigite include iron sulfide, iron(II,III) sulfide, and magnetic iron sulfide. It is distinguishable from other minerals such as pyrite and magnetite due to its unique magnetic properties. Greigite is often used as a paleomagnetic indicator in paleoclimate studies, as it can provide clues about the Earth's magnetic field and past climate conditions. It is also used in various industries, such as in the production of magnetic storage mediums and magnetic sensors.
