Mineral Compositions of Korean Dancheong Pigment Products using Quantitative XRD

Abstract

Mineral composition and content of 22 Korean Dancheong pigment products were obtained by Rietveld quantitative analysis. Jubosa, Hwang, Seokrok, Seokcheong and Hobun consist of pure cinnabar, orpiment, malachite, azurite and calcite (or aragonite), respectively. Whereas Seokganju, Hwangto, Noerok, Lapis lazuli, Baekto and Cockie hobun mainly consist of hematite, goethite, celadonite, lazurite, kaolin mineral and portlandite, respectively. And they all consist of soil minerals (quartz, feldspar, sericite and vermiculite) and filler minerals in the industry field (calcite, gypsum and anhydrite) at a different content. Quantitative XRD proved more useful method to determined exact mineral composition and content than chemical or microscopical data. If this method utilize for specification of natural pigment product, it is considered to be applicable in restoration technology and conservation science field.

Corrosion Behaviors of Outdoor Bronze Sculptures in an Urban–Industrial Environment: Corrosion Experiment on Artificial Sulfide Patina

“…The analysis was performed with a diffraction angle of 2θ of 10-90 • , step size of 0.02 • , and scan speed of 0.5 s/step. The XRD patterns were analyzed using the Crystallography Open Database (COD) and TOPAS software; further, they were quantitatively analyzed according to industrial needs for the Rietveld method by using Siroquant v. 3.0 [17].…”