Fig. 6From: Detecting iron-based pigments on ruthenium-coated ancestral Pueblo pottery using variable pressure scanning electron microscopyTescan Vega 3 XMU SEM backscatter image of ruthenium coated sherd at 2.3e−2 Pa vacuum. Tab of carbon tape (arrow) added to locate area of sample. Bright areas of compositional contrast are due to iron in paint pigment which is correlated to painted pattern shown in Fig. 1. Scale 1 mmBack to article page