Copper vandate minerals found in mediaeval mural paintings
Material type: ArticleDescription: 4 pISBN:- 0039-3630
Item type | Current library | Call number | Status | Notes | Date due | Barcode |
---|---|---|---|---|---|---|
Article de revista | Biblioteca de l' Escola Superior Conservació i Restauració de Bens Culturals de Catalunya | Studies in Conservation 3 (Browse shelf(Opens below)) | Available | R: 2794 | Art-53 |
Browsing Biblioteca de l' Escola Superior Conservació i Restauració de Bens Culturals de Catalunya shelves Close shelf browser (Hides shelf browser)
No cover image available | No cover image available | No cover image available | No cover image available | No cover image available | No cover image available | No cover image available | ||
Studies in Conservation 3 An investigation into the cause of corrosion on indoor bronze sculpture | Studies in Conservation 3 Application of colour metallography in the examination of ancient metals | Studies in Conservation 3 Copper trihydroxychlorides as pigments in China. | Studies in Conservation 3 Copper vandate minerals found in mediaeval mural paintings | Studies in Conservation 3 Characterization of the corrosion layer on iron archaeological artefacts from K2 (825–1220 AD), an archaeological site in South Africa | Studies in conservation 3 Cellulose degradation in the Vasa: The role of acids and rust. | Studies in Conservation 3 Causes and extent of variation in collection condition survey data |
A yellowish copper vanadate mineral has been found in swedish mural paintings from the fifteenth century. Small patches occur in malachite-green paint. Thirteen samples from five chuches have been analyzed by optical and scanning electron microscopy with energy-dispersive X-ray spectrometry, transmission electron microscopy, X-ray powder diffraction, and polarized light microscopy. The substance is evidently the rather uncommon mineral volborthite, with the chemical formula Cu3V2O7(OH)2.2H2O. Very small quantities have also been noted for another mineral, presumably calcio-volborthite, CaCu(VO4)(OH), also named tangeite. The results show that the conservator should always be observant for pigments not earlier noticed or reported. There are some old mines in Central Europe, e.g. in Germany, which contain malachite as well as copper vanadate minerals, and this is probably the origin of the yellow patches in the paintings.
There are no comments on this title.