Graphite is a form of the element carbon in which the carbonatoms are arranged in layers. These layers are very loosely held together, allowing them to slide over each other easily. This gives graphite its characteristic slippery feel and ability to leave marks on surfaces.
Graphite is one of the softest minerals and has a hardness of 1-2 on the Mohs scale.
It is one of the three natural forms of carbon, along with diamond and amorphous carbon.
Graphite is used as a dry lubricant in applications where wet lubricants would be impractical, such as in space exploration and certain industrial processes.