Yes, it is. You can read more here: http://en.wikipedia.org/wiki/Graphite
in the earths crust
They can be found in the earths crust.
it can be found on earths crust
its found in the earths crust.
gyudryuj
silicon
8.1% by weight
Basalt and limestone.
native metals
It is found in earth's rock layers
Iron , Aluminium and Copper Can Be Found , Also Gold Can Be Found Uncombined in the Earths Crust .
It is the mantle.