GeoElementary is a business set up by Chris Johnson in January 2016. Chris had a long career in Geochemistry with the British Geological Survey (BGS) before retiring in 2013. Much of his life has been spent overseas working on regional geochemical mapping projects including: Indonesia, Morocco, Madagascar, Saudi Arabia, Sri Lanka, China and Nigeria.

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Training in Geochemistry - Geochemical Sampling - Geochemical Mapping Project Management - Report Writing and Editing - Data conditioning and interpretation - R-code statistical analysis - Web pages and presentations - html and kml applications.


My interests in the field of geochemistry include: training in geochemical mapping, data conditioning and interpretation, the urban chemical environment, geochemistry and health (particularly I and Se), developing statistical methods for data analysis, geochemistry and agriculture, global geochemical baselines and using new computer technologies in applied geochemistry.


  • picture“Training students, Madagascar in 2005.”
  • picture“Technical Assistance, Saudi Geological Survey in 2019. “
  • picture“Geochemical Mapping training, Sierra Leone. March 2016.”



1)Technical Advice to the Saudi Geological Survey for Geochemical Survey of the Arabian Shield (as an associate consultant, IGS Ltd)

2)INTERNATIONAL UNION OF GEOLOGICAL SCIENCES Global Geochemical Baselines Group. Sampling Manual (led by Alecos Demetriades)


3)Demetriades, A., Johnson, C.C. and Birke, M. 2018. Urban geochemical mapping: The EuroGeoSurveys Geochemistry Expert Group's URGE project. Journal of Geochemical Exploration, 187, 1-5. doi.org/10.1016/j.gexplo.2017.10.024