Pyrite and iron sulphide. Pyrite (fool's gold) is a lustrous mineral composed of iron disulphide (FeS2, left). Iron sulphide (FeS, in watch glass, right) is a black solid. They have a very different appearance, despite both being composed of iron and sulphur. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5162 px × 3432 px |
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