Introduction
Periodicals
Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze
2011/19/2
Historie dolování, ložisková geologie a mineralogie některých lokalit v novoknínské zlatonosné oblasti (střední Čechy)
Historie dolování, ložisková geologie a mineralogie některých lokalit v novoknínské zlatonosné oblasti (střední Čechy)
Vladimír Šrein, Jiří Sejkora, Jiří Litochleb, Blanka Šreinová
| Pages | 101-129 |
|---|---|
| Citation | ŠREIN, Vladimír, SEJKORA, Jiří, LITOCHLEB, Jiří a ŠREINOVÁ, Blanka. Historie dolování, ložisková geologie a mineralogie některých lokalit v novoknínské zlatonosné oblasti (střední Čechy). Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze. Prague: National Museum, 2011, 19(2), 101-129. ISSN 1211-0329 (print), 1804-6495 (online). Also available from: https://publikace.nm.cz/en/periodicals/bmpholnrhmvp/19-2/historie-dolovani-loziskova-geologie-a-mineralogie-nekterych-lokalit-v-novokninske-zlatonosne-oblasti-stredni-cechy |
The Nový Knín area represents besides the Jílové gold-bearing district the second very significant gold-bearing region in the central Bohemia (Czech Republic). This paper summarizes hitherto knowledge about mining history, economic geology and mineralogy of some localities in the Nový Knín gold-bearing area and presents the results of a new mineralogical research. Gold mineralization in the Nový Knín, Kozí Hory and Libčice gold-bearing districts is represented by the veins or stockworks in sedimentary and volcanosedimentary Neoproterozoic rocks of the Barrandian block (bohemicum). The primary gold-bearing occurrences are often accompanied by alluvial and deluvial gold-bearing placers with visible gold. In this ore area, the following types of mineralization occurrs: classic quartz-base-metals (arsenopyrite, Fe-rich sphalerite, galena, chalcopyrite, pyrite), quartz-Au-Ag-base-metals (arsenopyrite, Fe-rich sphalerite, löllingite, galena, chalcopyrite, Fe and Sb dominant freibergite, hessite, acanthite, miargyrite, Au-Ag phases - gold (fineness 0.340 - 0.515) to Au-rich silver and accessory sulphosalts (Pb-Cu-Bi,Sb-S and Pb-Ag-Sb-S), quartz-gold-bearing (arsenopyrite, pyrite, pyrhotite, chalcopyrite, locally molybdenite, gold (fineness >0.860), Bi-Te±S phases - tsumoite, pilsenite, sulphotsumoite, joséite B, tetradymite) and antimony mineralization (gudmundite, berthierite in quartz or calcite veins or disseminated in rocks). The dominant primary quartz-gold-bearing mineralization were formed in course Variscan hydrothermal, locally in conditions contact metamorphism processes (the Libčice gold deposit).
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