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Description: | An irregular lump of melted white metal. Finder believed this to be melted medieval silver related to coin hoard found nearby, 2009T427 & 2012T169 and so addenda to those coins?Metal Content: Non-destructive X-ray fluorescence analysis of the surface of white metal melt identified the metal as mainly zinc (72.3g) with a little copper.Discussion: In Britain zinc production begins with the process patented by William Champion in 1738). Before this date zinc was alloyed by heating zinc ore in a sealed container with copper to produce brass. Because it is volatile no zinc metal was produced until it was deduced that the vapour had to be captured by distillation.The find contains no precious metal and the zinc content indicates that the find is modern and not associated with a Medieval coin hoard from the area (2009 T427 & 2012 T169). This find as such falls outside the provisions of the Treasure Act 1996.Susan La Niece, The British Museum
Original Image | Publisher: | http://finds.org.uk | Source: | Portable Antiquities | Identifier: | http://finds.org.uk/database/artefacts/r... | Go to resource |
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