Copper sulphide. Copper (II) sulphide (CuS) in a watch glass. Tarnished manganese (Mn) metal chunks in a watch glass. When exposed to air for a long time, manganese tarnishes (oxidizes) to manganese (II, III) oxide (Mn3O4). The oxide has an appearance similar to iron rust. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5170 px × 3435 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |