Figures of the Article

• Carvings made of Qianshanhuangdong stones (Pictures provided by Chen Gang)
• Qianshanhuangdong stone samples
• Morphological characteristics of minerals in Qianshanhuangdong stone samples observed by polarizing microscope with cross-polarized light: a.Sample QSH-1; b.Sample WG-01; mineral abbreviation symbols from ref. [8]
• XRD patterns of Qianshanhuangdong stone samples
• Infrared spectra of Qianshanhuangdong stone samples
• Compositional classification of trioctahedral chlorite
• Spider diagram of trace elements in Qianshanhuangdong stones
• Rare earth element assemblage diagram of Qianshanhuangdong stone samples