This looks a bit more purple than stuff I have generally found
associated with cyanide and purple is usually more associated with
chromium than anything in the Midlands, so my first guess would be a
metal complex (from plating or similar) and/or a dye stuff. That said,
it is not clear from the photographs if the material is powdery or
plastic. If the latter, I have found some very oddly coloured resins in
strange places over the years..... Any chemical results yet?
Chris Swainston BSc CGeol FGS
Principal Geoenvironmental Engineer
For: Geotechnics Limited - Head Office
Tel: 02476 694664
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