The provenance of tin metal in workings for alluvial cassiterite in Nigeria
Abstract
Beads of metallic tin were not infrequently found in workings for cassiterite at the northern end of the Plateau minesfield, and it was commonly believed that these were artifacts and that their presence could be attributed to the intercourse between the tribes inhabiting this part of the highlands and traders from Badiko and Liruein Delma, where it is known that the smelting of tin bad been practised long before the arrival of the first Europeans. From what the writer remembers of these beads, they were generally more or less spherical, 4 or 5mm diameter, usually imperforate but often with one minute hole in them and apparently hollow, and in the light of his later investigations he considers that for the most part they were not artifacts but bad been produced in the process of the smelting of iron.
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Rene Gardi. 100 Al. Lloyds Register of Shipping. 1959, No. 4, p. 32.