Abstract
The polymetallic Remšnik ore deposit is situated at the Kobansko area in northern Slovenia. Mineralization occurs in the thrust zone of the weakly metamorphosed old Palaeozoic rocks of the Magdalensberg formation, the Remšnik nappe, onto the retrogressed schists of the Austroalpine metamorphic basement. Hydrothermal ore mineralization and silicification follow slaty cleavage in partly brecciated marmorized dolomite lenses and subordinately in metatuffites and phyllites. Its origin is most probably connected to the lively Tertiary magmatism, occurring at the Pohorje Mountains. Mineral paragenesis of the predominant Pb, Cu and Zn silver bearing sulphide ore is associated with numerous secondary minerals. Among them, two rare sulphates with H2O of Cu and Zn occur, found for the first time in Slovenia. The green, transparent monoclinic crystals, only some tenth of millimetre in size were determined by SEM as ramsbeckite (Cu, Zn)15(SO4)4(OH)22 ∙ 6(H2O). Greenish in colour are also leafy, hexagonal, flowery intergrown crystals, which most probably belong to namuwite (Cu, Zn)4(SO4)(OH)6 ∙ 4(H2O). Its submicroscopic size and small quantity did not permit reliable determination, yet.
Highlights
The polymetallic Rem{nik ore deposit is situated at the Kobansko area in northern Slovenia
On the 1:100 000 scale Basic geological map of Slovenia, sheet Slovenj Gradec (Mio~ & Žnidar~i~, 1977) the Rem{nik mine is marked between the Rem{nik nappe composed of Magdalensberg formation rocks and the footwall Pohorje formation of retrograde schists of the Austroalpine basement
Macro- and microstructures of the rocks reveal several phases of tectonic activity, including twice reactivated subhorizontal shear movements, due to which dynamometamorphic imprint can be followed in all rocks
Summary
Rem{nik is nowadays not of interest as an ore deposit; it represents the only insight into the third dimension in this region to structural geologists and a “Mecca” for rare minerals collectors. It is not surprising that the presented ramsbeckite find belongs to green crystals Despite the fact, they differ macroscopically and under the hand lens from the so far known minerals in the Rem{nik ore deposit. They differ macroscopically and under the hand lens from the so far known minerals in the Rem{nik ore deposit Their determination is the basis for the presented study. According to the available data, ore mineralization in the Rem{nik mine occurs in the old Palaeozoic low metamorphic rocks of the Magdalensberg formation. Žorž and co-workers (2007) presented some more frequent minerals ( quartz crystals) of the Kobansko area
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
