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Can Someone Tell Me What Kind Of Rock This Is?


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So I found this rock in front of an apartment complex in San Diego. When I looked closer, I noticed something inside it. To me, it looks like a fossil of some kind. (Included a close-up pic) But honestly, I really don't know much about rocks, fossils, minerals or gems but I've always been fascinated with them since childhood. If I saw something pretty or interesting looking, I kept it but never really did research on them. Curious to know what anyone thinks of this rock though. Thanks for any help in advance.

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It appears you found a very fine and dense conglomerate.  In a way it is a fossil, conglomerate is essentially sand or mud from an old water system thats ossified into rock.  The bits of stone are old gravels and it looks that some chalcedony formed in what was a void in the stone~ the white portion of your last photo.

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