The deposit also contains significant quantities of Yttrium.
Yttrium |
Mercury possesses an abundance of rare and heavy metals that are rare on Earth and unknown in other parts of the Solar System, including: copper; Yttrium, used for armaments (The Demons of Darkside); pitchblende, from which Radium and Uranium can be extracted (A World is Born); and the rare radioactive crystal known as the sun-stone (Shannach – the Last).
This is a common construction also seen in Itterby, one of the parishes which formed Cleethorpes, and also Ytterby in Sweden, which is relatively frequent in Scandinavia and from which derive the names of the Chemical elements Yttrium, Ytterbium, Terbium and Erbium.