Here is a brief description of antimony.
Metallic antimony is an extremely brittle metal of a flaky, crystalline texture.
It is bluish white and has a metallic lustre. It is not acted on by air at room temperature, but burns brilliantly when heated with the formation of white fumes. It is a poor conductor of heat and electricity. Antimony and its compounds are toxic. It is found mostly with other minerals and in stibnite.