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Heritage Science
Fig. 4 | Heritage Science

Fig. 4

From: Hyperspectral imaging solutions for the non-invasive detection and automated mapping of copper trihydroxychlorides in ancient bronze

Fig. 4

Left: Colour image, of the two selected fragments (YJS-M109-19, SJL-M102-8) of ancient Chinese bronze, derived from VNIR spectral cube (top) and the cluster map associated with copper trihydroxychlorides (bottom). Right: VNIR Mean spectrum for this cluster (black), and additional reference spectra for atacamite with clinoatacamite, and for atacamite, clinoatacamite and quartz (green and blue respectively)

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