Heres another from Carrickfergus Ireland

[SPiperato]

Here's another from Carrickfergus Ireland

Here's a big chunk of the smooth glass like rock that's part of the last post I submitted.

 

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A History of Mining on the Kenai Peninsula, Alaska - Grab it through Amazon!

[Eu_citzen]

Quartz related, I'm thinking flint.

 

[pannerman]

chert