Article ID: CBB001202197

First Finding of Early Medieval Iron Slags in Sardinia (Italy): A Geochemical–Mineralogical Approach to Insights into Ore Provenance and Work Activity (2014)

unapi

At Santa Filitica, a Roman settlement in north-western Sardinia occupied until the ninth century ad, archaeological excavations have found the remnants of a furnace consisting of a semi-circular base made of stony slabs and tiles bound with clay. The furnace is attached to a wall of Roman age. Layers of the sixth century ad, bearing several variously oxidized slags, were found close to the furnace. These findings first testify to an ironworks in Sardinia, within a well-defined context. XRPD and SEM–EDS mineralogical and textural analyses suggest that the slags derive from a bloomery and smithing work that was the first evidence of this type documented in Sardinia during the Early Middle Ages. Chemical analyses (performed with ICP and INAA) of rare earth elements and trace elements in two slags and in two Sardinian iron deposits allow some conclusions to be drawn on the local provenance of the ore. Our comparison of the Sardinian findings and some slags representative of archaeological smelting sites at the front of Elba island—the largest and longest lived iron-working sites in the Mediterranean—also improves the methodology with which iron slags derived from different ores are compared.

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Authors & Contributors
Gordon, Robert B.
Martín, Immaculada Pérez
Ross F. Allen
James C. Dawson
Brian H. Morrell
James R. Wettstaed
Concepts
Iron and iron industry
Iron, Cast
Furnaces
Industrial archaeology
Arab/Islamic world, civilization and culture
Archaeological Surveying
Time Periods
Medieval
9th century
19th century
18th century
10th century
11th century
Places
Europe
Connecticut (U.S.)
United States
Missouri (U.S.)
Carolingian Empire
Mediterranean region
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