Under regular conditions wulfenite crystallizes in a scheelite crystal structure (s.g. I4/a). In this study we investigated hemimorphic crystals from Mežica. They showed a lack of mirror symmetry and belong to the lower I4 symmetry. Noncentrosymmetricity of the wulfenite crystals was attributed to partial replacement of Pb by Mo. Due to lower symmetry the crystals are prone to inversion twinning as shown by Rečnik (2010).
COBISS.SI-ID: 24679463
The main activities within the frame of Geopark are focused to promotion of sustained development of unique geological features of the pertinent region and contribute to its preservation, stimulate bilateral cooperation, and develop the cross-border region with various forms of geotourism.
COBISS.SI-ID: 947294
During the centuries of mining Meža river was persistently loaded with heavy and potentially toxic metals. The upper stream sediments have an incereased concentration of geogenic minerals such as sulphides of lead and zinc and their oxidation products, whereas the concentrations of Pb and Zn reach values of 19.300 and 37.900 ppm in mine drainage areas.
COBISS.SI-ID: 1931349