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Ljt212
Hello, I found these weird red rocks at the base of Beachy Head yesterday. They are really heavy and feel metallic. Inside they are this amazing silver/gold. 
Any help would be most appreciated. Click image for larger version - Name: 20200423_135142.jpg, Views: 98, Size: 434.05 KB Click image for larger version - Name: 20200423_135133.jpg, Views: 98, Size: 378.70 KB
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Rolo
They are Marcasite nodules, a form of pyrite (fools gold). They commonly occur in the lower horizons of the chalk and can often be seen in-situ around Cow gap and Beachy head in the exposed chalk. They wash out and end up in accumulations of dense material on the foreshore. Often mistaken for Meteorites!.
Unfortunately they tend to be unstable, and usually degrade to a sulphurous mess in time.
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prep01
Alan - Macasite not with a k!!!!!
Colin Huller
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Rolo
Indeed, thanks Colin. Edit still works!
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Ljt212
Hi guys, thanks for the replies, sorry it's taken me so long to reply myself. Interesting little blighters. Have found a damned lot of other fossils since and must get around to uploading them, all from Eastbourne area, most I recognise but a couple are peculiar and I honestly haven't a clue. Thanks again.
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