Gallium is a chemical element; it has symbol Ga and atomic number 31. Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875,^[10] gallium is in group 13 of the periodic table and is similar to the other metals of the group (aluminium, indium, and thallium).

Elemental gallium is a relatively soft, silvery metal at standard temperature and pressure. In its liquid state, it becomes silvery white. Since its discovery in 1875, gallium has widely been used to make alloys with low melting points. It is also used in semiconductors, as a dopant in semiconductor substrates

Gallium alloys are used in thermometers as a non-toxic and environmentally friendly alternative to mercury, and can withstand higher temperatures than mercury.

Uses – Common uses for gallium include the production of brilliant mirrors and in liquid thermometers. In the form of gallium arsenide (GaAs), this compound is used to produce LEDs for numerous devices such as smartphones and calculators, because it has the ability to convert electricity directly to light.

MMg noted its waste feedstock reported Ga presence during the drill out programme and is now looking into the optimal point at which to extract this metal.   Bearing in mind that the quantities are small it is estimated that 6-8 tonnes / year may be able to be recovered as a GaCl product.   Gallium is listed as a EU and US listed CRM.