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Showing results for tags 'conchoidal fracture'.
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I would like to better understand conchoidal fracturing of chert/flint. I have many pieces where the fracturing is obviously conchoidal, but some others where this isn't obvious. I'll post photos in hopes that knowledgeable folks can point out circular characteristics that I'm not seeing. In this first one I can see small conchoidal divots. It's the larger seemingly straight(long lines) fractures where I don't see conchoidal characteristics.