By: John Langhorst
The Crystal Structure of Graphite
Graphite has an unusual crystalline structure. It is made up of a stack of one-atom-thick sheets of carbon atoms, bonded tightly together into a hexagonal pattern in each sheet, but with only very weak attractions--much weaker than actual chemical bonds--holding the sheets together.
Where You Find Graphite
Graphite can be found throughout the world, but is found more abundantly in China.
It is ranked as a 1 on the mohs scale of hardness.
It leaves a black streak when scratched on a streak plate.
The luster is sub-metallic which means that the luster is almost metallic.
Does Graphite have Cleavage or Fracture
Graphite has perfect cleavage, but you can't see it with the common eye. You have to look at it with a microscope.
How Much is Graphite Worth
Graphite is worth between $0.50 and $4 a kilogram depending on the quality of the graphite.