CANCELLED TALK - Mineralogical and Geochemical Analysis of Early Medieval Iron Slags from Dinajpur Region, Bangladesh

The present study examines the mineralogical and geochemical composition of iron slags excavated from several early medieval sites in Dinajpur, Bangladesh. The objective is to unravel insights into the metallurgical processes of the past, shedding light on the technological advancements and socio-economic dynamics of early societies. A multidisciplinary approach combining X-ray diffraction (XRD) and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy (SEM-EDS) was employed to identify mineral phases and elemental compositions within the slag matrix.

Results revealed a diverse range of mineral phases, including iron oxides (hematite, magnetite), silicates, and trace elements indicative of the smelting process. The presence of slag phases such as fayalite and wüstite suggests a reduction environment during smelting, corroborating historical accounts of early iron production techniques. Geochemical analysis unveiled varying elemental compositions across different slag samples, reflecting differences in raw materials, smelting techniques, and operational conditions at distinct archaeological sites. Elevated levels of iron, silicon, and aluminum were observed, consistent with the expected constituents of iron smelting residues. The findings provide valuable insights into the technological prowess and metallurgical practices of the early medieval period in Dinajpur, Bangladesh. By understanding the mineralogical and geochemical signatures embedded within iron slags, a deeper understanding of past metallurgical processes was also gained, facilitating reconstructions of ancient socio-economic systems and technological advancements.

Key words: Iron Slags, Early Medieval Period, Dinajpur, Bangladesh