An integrated mineralogical and geochemical study was conducted to evaluate links between carbonate replacement siderite–polysulphide (Cu, Pb, Ag ± Ba) deposits, associated gossans, archaeological slag and distal bog-iron ores in the Trgovska Gora and Petrova Gora Mountains, Dinarides. A total of 45 samples were collected from ten mining sites located at hilly area (primary ore, proximal gossans, archaeological slag) and three lowland bog-iron occurrences up to 100 km away. Primary deposits and gossans are hosted by synorogenic flysch sequence, covered by soil and vegetation. Degree of weathering is high (median value of Chemical Alteration Index is 85 %). Petrographic analysis, X-ray diffraction, and multivariate geochemical analysis of major, trace, and rare-earth elements were used to reconstruct pathways of iron and base-metal mobilization. Results support three-stage weathering model for carbonate replacement deposits: (1) chemical weathering of primary siderite–polysulphide mineralisation and oxidation in vadose zone to goethite (hematite, lepidocrocite, dusty limonite) ± malachite, azurite, anglesite, development of proximal (residual) gossan; (2) mechanical weathering and transportation of weathered Fe-ore (together with associated host-rocks) and its deposition as distal, reworked or pedogenical gossan, (3) chemical transportation of dissolved metals in saturated zone by reductive groundwater via gravitational flow to 50–100 km distance and reprecipitation in topsoil as bog-iron ore. Immobile trace elements (Zr, Nb, Ta, Hf, W), redox-sensitive elements (Mo, V, U), and REEs are consistently enriched in the aluminosilicate matrix and traceable from primary ore to gossans, bog iron, and slag. The persistent geochemical anomalies of Fe, Mn, Cu, Pb, Zn, Ag, Co, Ni, Sn, Sb, As, and Ba across all materials demonstrates inherited hydrothermal signature despite dilution in distal deposits.