Publisher © Czech Geological Survey, ISSN: 2336-5757 (online), 0514-8057 (print)
Geology and mineralogy of the Milířka valley near Jiřetín pod Jedlovou
Abstract
The new geological survey in the Milířka valley (near Jiřetín pod Jedlovou) has especially revealed the occurrence of several minerals. This study has investigated their optical properties, chemical composition, X-ray diffraction patterns and mineral assemblage showing percentage ratio of each mineral. New occurrence of erythrine and langite based on X-ray diffraction patterns and FTIR spectrometry has been found. Bismuth inclusions determined on the basis of analysis chemical composition of galena have been identified. Also the presence of pyrite, arsenopyrite, chalcopyrite in sphalerite and sphalerite in chalcopyrite has been described in detail. A new sequence of crystallization has been explained. It has been classified into four stages of progress (quartz-sulphidic, metallic, calcitic and supergene). The origin and character of mineralization has been typified using fluid inclusion studies. The mineralization is associated with the Lusatian fault zone. New relict of Permian rocks uplifted along the Lusatian fault has been found in SW part of the Milířka valley.
