1. UK Centre for Astrobiology, School of Physics and Astronomy, University of Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland;
2. Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland;
3. Israeli Chemicals Limited, ICL Boulby, Boulby Mine, Cleveland;
4. Grant Institute, School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom of Great Britain and Northern Ireland