Beatrice Demarchi
a BioArCh, Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
Matt G. Williams
b Department of Archaeology, University of York, King’s Manor, York Y01 7EP, UK
a BioArCh, Department of Chemistry, University of York, Heslington, York YO10 5DD, UK
b Department of Archaeology, University of York, King’s Manor, York Y01 7EP, UK