Charcoal is a highly porous form of amorphous carbon created by the destructive distillation of wood.

When Spock observed Kirk's collection of raw materials as he evaded the Gorn captain, he noted Kirk's attempt to create a makeshift cannon, and the necessity of him to find a charcoal deposit or ordinary coal to complete the weapon. (TOS: "Arena")

External link Edit

• Charcoal at Wikipedia