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Amgueddfa Cymru – Museum Wales
This stone has two flat ground surfaces indicating it was possibly used as a rubber. It was since burnt, fire cracked and is stained with charcoal.
It is Lithology A: Pale grey, unfossiliferous, well sorted, fine to very coarse grained orthoquartzite, commonly with granules and occasionally with small pebbles of vein-quartz. The rock is lightly to moderately cemented with secondary quartz and has a marked porosity. This is the most common Lithology of the Severn Estuary sites.
Site Name: Peterstone, Peterstone Wentloog
