Ytterium, Ytterbium, Terbium and Erbium To most people the four words in the headline probably means nothing. People who have studied science might know that they are four basic elements. These four basic elements have in common that they were all named after Ytterby, a tiny village north of Stockholm in Sweden. Or maybe it is more correct to say that the basic elements were named after Ytterby Mine from which ore these basic elements were first isolated. To this list we can add another three basic elements namely Holmium, Thulium and Gadolinium. Those three elements where also for the first time ever isolated from ore from this mine. That seven different basic elements were discovered in ore from one and the same mine is unique of course. The reason this happened is that the ore
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