I love those artefact conservation posts! Here is one from Carrie at the Kelsey about a bowl from Karanis covered with some mysterious white stuff. (And I love a good detective story as well!)
CAROLINE ROBERTS, Conservator, Kelsey Museum of Archaeology
I love a good mystery, and nothing (save a really good crime novel) is better than an artifact mystery. I love the thrill of investigating an object, identifying its agents of deterioration, and nabbing those culprits one by one. I also really enjoy teaching new conservators how to use investigative tools to make their own observations. I recently spent a day looking at an object with Ellen Seidell, a U of M junior who is interning in our lab. The ceramic bowl – excavated at Karanis in 1929 – was covered with feathery white crystals, as well as a drippy, peeling surface coating. I had my suspicions as to what these were, but wanted Ellen to learn for herself how to identify unknown materials.
To do this, we examined the bowl under longwave ultraviolet light. This is a useful tool not only for…
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