Strontium

a metal closely allied to barium. It was first noticed in combination with carbon in the lead mines of Strontian in Argyllshire, Scotland, whence the name. It was separated from other elements by Davy in 1808. Strontium is a yellowish metal. It is malleable and ductile. It burns with a brilliant crimson flame in heated air, and for that reason strontium is employed widely in the preparation of fireworks. Strontium carbonate is used in the refinement of sugar.