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Showing posts from May, 2014

Memento Mori

Been working on this for a while, inspired by the baby burial from the Neolithic settle ment of Catalhoyuk last year . I've always felt neutral about working with human remains, and the picture of the tiny skeleton being uncovered by Barbara Betz in 2013 was the first time it's given me a lump in the back of my throat. The scientist in me is all for studying human remains, but I wonder what these people would have felt about their infant being excavated. W e're talking here about a culture that was fascinated with skull removal so who knows! Perhaps these new feelings are a result of being a parent (I almost said recently but it's getting close to 1 ye ar!) - a good example of how our own personal situation influences the way we perceive the past. Beneath the floors are hidden treasures, In secret kept, the bones are sealed Of those now gone who’ll dream forever, They wait their time to be revealed. The days they pass without perception The night

Micrograph of the Month: Dissolution of Spherulites

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This post follows on from the Manganese Micrograph Mystery I posted a while ago. Blog followers will remember I posted some images of layered ruminant dung which had a distinctive black 'speckled' appearance, a bit similar but not quite the same as Mn staining. Thanks to my readers the mystery was solved through the kind contributions of Hans Huisman. Huisman is a geoarchaeologist with expertise in degradation and preservation of archaeological materials. He suggests that manganese would produce more dendritic like patterns, and that instead this appears to be iron sulphide staining. Iron sulphides include minerals such as pyrite, which can oxidise to rust . This type of staining can be recognised in OIL as having a 'metallic' lustre, or smaller particles, such as we have here, can be examined using reflectance microscopy at a high magnification. So I'll be doing that asap. For now I wanted to share this image showing the possible impact this staining has had on