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The Cobalt Ores and Pigment Used in The Yuan Blue-and-white Porcelains of Jingdezhen Guan Yao

CHEN Yaocheng  CHEN Hong

(Shanghai Institute of Ceramics, Chinese Academy of Sciences)

Abstract: The composition characteristics of pigment used in the Jingdezhen Yuan blue-and-white porcelains are containing arsenic and sulphur, high Fe203 / CoO ratios (2~4.5), low MnO/CoO ratios and without nickel and copper. The chemical composition char­acteristics ore nearly the same as that of the danaite containing rich cobalt and without nickel and copper. So, the cobalt are used in the Jingdczhen Yuan blue-and-white porcelain proba­bly came from Central Asia, Europe or Gansu and Xinjiang areas in China. The geological structure of Gansu and Xinjiang areas is the same as that of Central Asia.

Keywords: ancient porcelain; blue-and-white; pigment; Cobalt ore


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