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Heritage Science
Fig. 4 | Heritage Science

Fig. 4

From: The atypical hues of the Santa Cruz blue-and-white cargo: non-invasive analysis of glaze defects and color variations in mid-Ming porcelain

Fig. 4

Ternary plot visualizing the blue pigment composition based on the relative proportions of Co, Mn and Fe; Santa Cruz data compared to a set of Jingdezhen blue-and-white from [87] (left). FORS spectra with the main absorptions of Co(II) in the visible and water in the near-infrared obtained on decorated areas for three plates from the analyzed set (right)

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