Record details

    Archaeometallurgic slags from Kutná Hora
Statement of responsibility
    Andrea Manasse = Marcello Mellini
    Manasse, Andrea
    Mellini, Marcello
Source title - serial
    Neues Jahrbuch für Mineralogie. Monatshefte
    H. 8
    p. 369-384
    2 obr., 5 fot., 4 tab., 18 bibl.
    Zkr. název ser.: Neu. Jb. Mineral., Mh.
Subject group
    báňská historie
    mineralogie technická
    odpad průmyslový
    rudy Ag
Geographical name
    Itálie střední
    Kutná Hora
Abstract (in english)
   The polymetallic mineralisation of the Kutná hora ore district (Czech Republic) has been successfully exploited for silver production, specially during the 14th and 15th centuries. Five slags, sampled from the Vrbovy mlýn smelting centre, have been analysed by X-ray fluorescence spectrometry, X-ray poder diffraction, oprica microscopy, scanning electron microscopy and energy dispersive X-ray spectrometry. The slags are mostly composed of SiO2, FeO, CaO and minor amounts of Al2O3; important sulphur and zinc contents were detected. depending on the calcium content, two main pyrometallurgical phase assemblages were identified, i.e., ferrobustamite + hedenbergite vs. hedenbergite + fayalite. Crystalline phases and glassy matrix contain relevant amounts of zinc. The charge ore underwent only a mild roasting prior to smelting, as indicated by the relevant sulphuir content.
   All the slags were obtained at temperatures ranging from 1150°C to 1300°C, using appropriate silica fluxes to optimise metal yield. Due to higher viscosity, massive matte may ocur in the slags, with limited silver content. The Kutná Hora slags, when compared with previous studies from Italian smelting sites, show similarities in metallurgical techniques
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    7. 3. 2008
Import date
    8. 8. 2012