RT Journal Article
SR Electronic
A1 Přikryl, Richard
A1 Racek, Martin
A1 Weishauptová, Zuzana
A1 Přikrylová, Jiřina
T1 Petrographic examination of opuka-stone tombstone of Arnošt of Pardubice with specific focus on provenance determination of natural stone
JF Průzkumy památek
YR 2018
VO 25
IS 2
SP 15
OP 24
DO 10.56112/pp.2018.2.03
UL https://pruzkumypamatek.cz/en/artkey/prp-201802-0003.php
AB Detailed petrographic study of two stone pieces taken from the figural tombstone of the first Prague Archbishop Ernst of Pardubice confirmed its similarity to highly porous, fined-grained sedimentary rocks from the Bohemian Cretaceous Basin (Bílá Hora Form.). This so-called opuka stone is composed of prevailing fine-grained silica with common, but variable admixture of carbonates and clay minerals, making intrabasinal component, supplemented with minor extrabasinal clastic component with fine- to medium-grained silt granulometry. Based on the results from analytical and observational methods, the stone is equal to the so-called "zlatá opuka" which has been quarried in the very vicinity of medieval Prague (Strahov - Bílá Hora area).