bn:03382434n
Noun Concept
Categories: Magnetic minerals, Thiospinel group, Ferromagnetic materials, Cubic minerals, Minerals in space group 227
EN
greigite  Gregite  Gregtite  IMA1963-007  melnikovite
EN
Greigite is an iron sulfide mineral with the chemical formula Fe2+Fe3+2S4. Wikipedia
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EN
Greigite is an iron sulfide mineral with the chemical formula Fe2+Fe3+2S4. Wikipedia
A magnetic form of iron sulfide, Fe2+Fe3+2S4, analogous to magnetite, produced by microorganisms and found in lake sediments; Note: half the iron ions are ferrous and half ferric. Wiktionary
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