||It has been suggested that this article be merged into Carbon. (Discuss) Proposed since June 2014.|
Carbonaceous refers to something relating to, containing, or composed of carbon. It is a named used for the attribute of any substance rich in carbon. Particularly, carbonaceous hydrocarbons are very unsaturated, high-molecular-weight hydrocarbons, having an elevated carbon:hydrogen ratio. The carbonaceous chondrites are meteorites that are rich in carbon.
The word "carbonaceous" was first used in 1791 
In geology, metamorphism of a carbonaceous geological material is expressed as a graphitisation process, referring to the graphite generated. Graphitisation may be accelerated or retarded in dependence on various metamorphic or lithological factors involved.
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