Fig. 24From: Materials and techniques of Islamic manuscriptsa RGB image reconstructed from bands 118, 75, and 35 from the hyperspectral cube for a painting in a manuscript from Herat, 1427, (Table 1, #13 p26). Linear least squares un-mixing of the datacube using references from the Forbes collection provide the following images of pigment distribution: b ultramarine (Na8–10Al6Si6O24S2–4), c vermillion (HgS), d red lead (Pb3O4), e orpiment (As2S3), f lead white (PbCO3), g indigo, h hematite (Fe2O3) i copper green, j orpiment (As2S3) and indigoBack to article page