Geochemists are Geologists who specialise in chemistry.

Geochemists analyse samples of soil, rock and other natural materials to monitor developments in the earth's composition and develop information about the age, nature and structure of specific geographical locations.

Job descriptions vary according to the area of employment. 

Oil and Gas 

  •  Applying petroleum geochemistry techniques to enable the development of more efficient methods of exploration and production.


  • Analysing the age, nature and components of rock, soil and other environmental samples;
  • Taking sample tests and checks, including gas chromatography, carbon and isotope data, viscosity and solvent extraction;
  • Working with a range of specialist equipment as part of research, including mass spectrometers, microscopes and electron microprobes;
  • Undertaking field visits to collect site samples;
  • Generating computer models, e.g. of hydrocarbon generation, using specialist software;
  • Mapping specific geochemical areas for research and analysis;
  • Interpreting a wide range of data and analysis results;
  • Liaising with geologists, petroleum engineers and commercial managers;
  • Providing support and recommendations to mainstream geologists;
  • Developing databases to track and organise information;
  • Providing data and feedback to clients;
  • Undertaking long-range theoretical and applied research;
  • Using written sources of information, such as journals and the internet, as part of the research process;
  • Writing technical reports and papers for journals;
  • Teaching and lecturing on specific areas within geochemistry;
  • Giving presentations at conferences and other events; and
  • Keeping up to date with developments and new research.


$70,000 - $135,000