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Materials of pietra dura artistic technique: composition, properties, provenance and possible identification
Jaroměřský, Štěpán ; Přikryl, Richard (advisor) ; Kuchařová, Aneta (referee)
Pietra dura or Florentine mosaic is a method of assembling thin slices of variously colored minerals and rocks into meaningful patterns or scenes. This artistic technique experienced a significant flourishing in Rudolfine Prague, where many works were created by this technique with materials that have not been described in detail yet. Although decorative carbonate rocks are frequently found in works made by the technique of pietra dura, decorative siliceous materials of jasperoid character, colored red, ochre or green, are equally important. This diploma thesis deals with the mineralogical and material research of these siliceous materials. One of the main objectives of the thesis was to explore possible discriminatory characteristics of siliceous materials from Czech localities, especially from the Kozákov area, which is historically documented as a deposit of jasperoid materials since at least the 16th century. The focus of the thesis lies in a set of mineralogical-petrographic and analytical methods of research. Using optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, powder X-ray diffraction, Raman spectroscopy, Mössbauer spectroscopy and observation in ultraviolet light, it was possible to determine the minerals contained in the studied jasperoid materials....
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