cobalt and yellow summer

Cobalt | Fun fact I know from some very un-fun research: Cobalt got its name because it was frequently mistaken for silver in the mines. The German word "kobold" means goblin, which were believed to lead miners astray in the mines. They believed the goblins were putting this mineral that was not silver in the mines to trick the miners. Thus the name became "cobalt"

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cobalt

cobalt