@article{oai:tobunken.repo.nii.ac.jp:00003755,
 author = {早川, 泰弘 and Yasuhiro, HAYAKAWA},
 issue = {48},
 journal = {保存科学, Science for conservation},
 month = {Mar},
 note = {The best known material of green-colored pigment used in Japanese paintings and sculptures is malachite (CuCO3·Cu(OH)2). X-ray fluorescence analysis (XRF) detects only copper element as the main component of malachite in air atmosphere measurement. However, newlyidentified copper-based green colored materials that contain Zn and As have been recently found in several art works by measuring with a portable XRF. They were found from the painting of the scroll of the Tale of Genji of the 12th century, Ogata Korin’s screen paintings and Ito Jakuchu’s paintings of the 17th-18th centuries. They were also found from the sculpture of Fugen Bodhisttva of the12th century and the board-wall painting of Byodoin of the 13th-14th century.
 We had a chance to analyze the pigment samples owned by Nabeshima Shigeyoshi in the early 19th century and found the green-colored materials containing Zn and As alongside with Cu by XRF measurement. They were identified by X-ray diffraction analysis as Rosasite (Cu,Zn)2(CO3)(OH)2 or Zincrosasite (Zn,Cu)2(CO3)(OH)2 for the materials containing Cu and Zn, as Adamite (Zn,Cu)2(AsO4)(OH) or Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6·H2O for the mateials containing Cu, Zn and As. These materials have a chemical structure similar to that of malachite and are also produced near places where malachite is mined.},
 pages = {109--117},
 title = {〔報告〕銅系緑色顔料の多様性とその使用例},
 year = {2009}
}