Bitumens

liquid petroleum paraffin base

mixed base

asphalticbase

native mineral waxes ozocerite (called ceresine when refined)

montan wax (extracted from peat)

native asphalts vary from a pure solid bitumen to an impure bitumen containing a high percentage of sand, clay, etc.

asphaltites gilsonite

glance pitch

grahamite characterized by a higher fusing point than the asphalts