china 1317-80-2

The author thanks Marco Leona, Scientist-in-Charge of the Department of Scientific Research at the Metropolitan Museum of Art for conducting fluorescence spectrometry on Wheel of Fortune and a valuable discussion of the research, as well as Silvia Centeno, Research Scientist at the Metropolitan Museum of Art, who performed Raman analysis on the watercolors and also contributed her insight. The phenomenon of the phosphorescing lithopone was originally discovered during the author's fellowship in the Sherman Fairchild Center for the Conservation of Works on Paper, funded by the Andrew W. Mellon Foundation. The author thanks all her colleagues for their ideas and support during the research of this paper, and special thanks to Rachel Mustalish for her assistance in editing this work.

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China has emerged as a significant player in the global talc and titanium dioxide market, contributing to the production, consumption, and export of these essential minerals. Talc, also known as talcum powder, is a naturally occurring mineral that is widely used in various industries, including papermaking, plastics, rubber, cosmetics, and pharmaceuticals. Titanium dioxide, on the other hand, is a white pigment that is primarily used in paints, coatings, plastics, and paper. Both minerals have unique properties that make them indispensable in numerous applications.

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