Fig. 6
From: Zinc white marker paint in Mondrian’s neoplastic paintings
Cross section of sample 90.12-X5 from Composition with double line and blue. a Incident polarised light; b UV induced fluorescence. The following layers can be observed. 1–2: ZW-Al/P; 3–5: ZW-Al/S. An aluminum phosphate and an aluminum sulphate inclusion are evidenced with a red and yellow rectangle, respectively