GRAPHITE (Carbon) - Amethyst Galleries Mineral Gallery
Rocks and Minerals Slide Show - Volcano World. Mineral information is presented here; Pictures of minerals are found at the bottom of the page. Today pencil "lead" is made of another mineral called graphite.
Graphite usually occurs in flakes in metamorphosed rocks rich in carbon, but it can also be found in veins and in pegmatites. Where large deposits are found it is mined and used as an industrial lubricant and for 'lead' in pencils.