The site manager of a new estate-build in mid-Norfolk contacted me with photos and details of a large, dense 'lump' that had been found at a depth of five metres. We were invited along to examine the object and carry out a few tests. As you can see, the 'lump' has a thickish crust, is attracted to a magnet and has a dark internal matrix with metallic flecks. I took a piece home and polished it, before sending details to the Natural History Museum. Fingers crossed!
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