O mineralizacji septariowej w konkrecjach węglanowych z utworów klastycznych karbonu otworu badawczego Chrząstowice PIG 1

The article presents the mineralogical and petrological characterization of carbonate concretions with septarian fissures found in Carboniferous clastic sedimentary rocks from a deep borehole of Chrząstowice PIG 1 drilled in 2023 near the Kraków-Lubliniec Fault Zone. The concretions consist mainly of siderite and, less frequently, ankerite, accompanied by detrital phases of quartz, kaolinite, illite, chlorite, apatite, zircon, and titanium-iron oxide minerals. The nuclei of the conrections are built mostly of biogenic components, e.g. fossilized stalks. Septaria exhibit branching systems of open fractures filled with calcite, dolomite, quartz and apatite. Among the sulphide minerals, only pyrite is common. The presence of septarian veinlets provides insight into the diagenetic history of the host rock, specifically the involvement of hydrothermal fluids in the mineralization processes.

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Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).