Chemical composition of small fragments of metals from Castillo de Huarmey (Peru): Chemical analysis in the micro‐area using FE‐SEM‐EDS, FE‐EMPA and XRD

Small metal fragments were found in the tomb of the Wari culture elite (Castillo de Huarmey, Peru). These objects were subjected to chemical analysis using a scanning electron microscope with energy-dispersive X-ray spectroscopy and field emission (FE-SEM-EDS), an electron microprobe analyser with field emission (FE-EMPA) and X-ray diffraction (XRD) analysis. Chemical composition analysis showed that four different alloys were used to make copper objects. Two different alloys were found in silver alloys. A comparative analysis was made of the artefacts of other cultures from the Middle Horizon Period. They differ in their chemical composition.