New Developments in the Research of Colour changes in Red Lead Vermilion and Hematite
铅丹朱砂和土红变色研究的新进展
It is found that hematite and malachite are more stable to both light and moisture than lead pigments, especially red lead, which can change into white lead at high humidity ( RH from 66% to 81%) with ultraviolet ray.
铅颜料容易变化,尤其是铅丹在光照高湿(相对湿度66%~81%)条件下变成铅白。
Red kingfisher color is generated after the formation of jadeite crystals, due to the Department of hematite impregnation.
红翡的颜色是硬玉晶体生成后才形成的,系赤铁矿浸染所致。
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