AlexTud Posted November 15, 2020 Share Posted November 15, 2020 (edited) Hello, I found this inside a loose chalk boulder on the Eastbourne shore. Based on the colour of the chalk it appeared to be from the upper cliff levels, perhaps cretaceous levels. Edited November 15, 2020 by AlexTud More keywords Link to comment Share on other sites More sharing options...
AlexTud Posted November 15, 2020 Author Share Posted November 15, 2020 5 minutes ago, AlexTud said: Hello, I found this inside a loose chalk boulder on the Eastbourne shore. Based on the colour of the chalk it appeared to be from the upper cliff levels, perhaps cretaceous levels. Different angles Link to comment Share on other sites More sharing options...
TqB Posted November 15, 2020 Share Posted November 15, 2020 (edited) Welcome to the forum! It's a marcasite nodule (at least that's what they're usually called from the Chalk, but it may actually be pyrite).They have a radiating needle crystal structure inside. Edited November 15, 2020 by TqB 6 Tarquin Link to comment Share on other sites More sharing options...
fifbrindacier Posted November 15, 2020 Share Posted November 15, 2020 Inside, the marcasite is like this : They're very useful to light fire and are still in use for that. Do you remember the smell of a match ? 4 "On ne voit bien que par le coeur, l'essentiel est invisible pour les yeux." (Antoine de Saint-Exupéry) "We only well see with the heart, the essential is invisible for the eyes." In memory of Doren Link to comment Share on other sites More sharing options...
AlexTud Posted November 15, 2020 Author Share Posted November 15, 2020 Thanks guys! You are very helpful and knowledgeable 1 Link to comment Share on other sites More sharing options...
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