Scientists say glass was made in Africa centuries before Europeans arrived

Glass was produced in sub-Saharan Africa long before Europeans arrived, according to scientists studying beads found in Nigeria.

Chemical analysis of glass found at a Nigerian archaeological site revealed a distinct composition entirely unique to the region.

The finding contradicts a long-held assumption that glass was brought to sub-Saharan Africa by traders from the Mediterranean or the Middle East.

Igbo Olokun, the site where the beads were discovered, is in the north of an ancient city and regional centre of power called Ile-Ife – the ancestral home of West Africa’s Yoruba people.

“This area has been recognised as a glass-working workshop for more than a century,” said Dr Abidemi Babatunde Babalola, an anthropologist at Harvard University who led the research project.

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The abundance of glass beads found in Ile-Ife has been associated with the many shrines and sculptures historically located there – however, archaeologists have presumed they were evidence of trade with distant nations.

“The glass-encrusted containers and beads that have been uncovered there were viewed for many years as evidence that imported glass was remelted and reworked,” said Dr Babalola.

There have been suggestions over the past decade from researchers that the glass production in Ile-Ife was in fact an entirely local affair, but evidence for such an industry was lacking.

Now, the beads and glass working debris found and analysed by Dr Babalola and his collaborators appear to resolve the matter.

“The Igbo Olokun excavations have provided that evidence,” Babalola said.

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Of the 12,000 glass beads found at the site, the researchers analysed 52 and found none matched the composition of glass produced anywhere else.

Two groups of glass were found at Igbo Olokun, one with high levels of lime and alumina, and one with low levels of lime and high levels of alumina.

Both were identified as unique to the region, and Dr Babalola and his team noted their composition reflected the local geology and raw materials that were available.

Notably, the glass found at Igbo Olokun was also dated to between the 1100s and 1500s, centuries before Europeans established trade networks in West Africa.

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“We are now confident beyond reasonable doubt that both the high lime-high alumina and low lime, high alumina groups of glass represent a glass produced in early Ile-Ife using local recipes, raw materials and technology,” wrote the researchers in their paper documenting the findings.

Their results are published in the Journal of Archaeological Science.

The occurrence of similar beads in other West African societies, as revealed by other archaeological excavations, indicated the glass produced at Igbo Olokun was part of a wider regional trading network.

This article originally appeared in The Independent 

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