Fig. 2From: Detecting iron-based pigments on ruthenium-coated ancestral Pueblo pottery using variable pressure scanning electron microscopyJEOL 6400 SEM image of un-coated (no ruthenium) sherd at 30 keV and a chamber vacuum of 5.0e−3 Pa. A JEOL Everhart–Thornley secondary detector is used for this image. White arrow carbon tape, C area of charging, P area of paint pigment. Scale 1 mmBack to article page