Molly Gleeson uses a brush to clean the exterior of an Egyptian casket more than 2,000 years old.
“‘That, to me, looks like Egyptian blue,” Lynn Grant said as she scrutinized a painting on mud plaster from more than 3,100 years ago.
Colleague Molly Gleeson agreed, but was curious why tests showed that the paint contained iron – not a standard ingredient in the ancient blue pigment.
A typical interaction for members of the conservation staff at the University of Pennsylvania Museum of Archaeology and Anthropology – with one exception. They were leaning over their microscope in full view of the public” via philly.com.
Read more here.