🔎 UNIDENTIFIED One Unique Stone Found While Beachcombing A River

[USNFLYR]

I was in England recently, and the river near the hotel seemed to be at low tide. While searching the sand, I found a thin piece of stone. The area had shipping and factories nearby, but also dates back to pre medieval times. The stone seems to have been clipped off, suggesting is was broken. I see cross hatching along the near straight portion. Using a saw blade usually leaves striations in one direction. This surface clearly has a two diagonal hatching pattern.

Any ideas?

 

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[TORRERO]

I was in England recently, and the river near the hotel seemed to be at low tide. While searching the sand, I found a thin piece of stone. The area had shipping and factories nearby, but also dates back to pre medieval times. The stone seems to have been clipped off, suggesting is was broken. I see cross hatching along the near straight portion. Using a saw blade usually leaves striations in one direction. This surface clearly has a two diagonal hatching pattern.

Any ideas?


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I'm not expert but that looks more stone age than medieval. Like a stone tool of some kind.. I can't say anything else as I don't know..

 

[ConceptualizedNetherlandr]

Could be slickenside or glacial striations.