Western Pohorje differs from the eastern part in terms of geological structure. The ring is composed of rocks of the metamorphic complex, such as gneisses, breccias and diafluorite. In the older and younger Paleozoic, diabase, phyllite schists and quartz sandstones were formed. The most interesting is the dacite tunnel, which penetrated Silurian-Devonian layers and Cretaceous limestones.
Contact metamorphic rocks were formed, such as hornblende, skarn and partial marbling of limestone. Iron ore also came to the surface with dacite. Magnetite is the most abundant, pyrite, pyrrhotite, hematite and limonite are less abundant. In the 18th and 19th centuries, iron ore was mined in Z Pohorje and smelted in the Mislinja ironworks by Zoisi and other blacksmiths. Among the skarns, garnet skarn is the most abundant, epidote is less abundant and hedembergite is very rare. In addition to iron ore, the minerals we can find are andradite garnets – grossular, epidote, plagioclase, zeolites, Mn dendrites, malachite and other copper minerals, scheelite, anatase ….
Author: Zmago Žorž