TheRussell Posted April 11, 2020 Share Posted April 11, 2020 I found this in a creek bed amongst what I am told is ironstone rock. Wondering if anyone knows what it is. Thanks. It weighs at least 80 pounds. Link to comment Share on other sites More sharing options...
jpc Posted April 11, 2020 Share Posted April 11, 2020 looks like a concretion. 2 Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 11, 2020 Share Posted April 11, 2020 Concretion or possible Septarian nodule. 2 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Pterygotus Posted April 11, 2020 Share Posted April 11, 2020 I agree, not a turtle shell, sorry. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted April 11, 2020 Share Posted April 11, 2020 Definitely a septarian concretion, and a very nice example! I've got a few in my collection too. 1 Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
TheRussell Posted April 11, 2020 Author Share Posted April 11, 2020 Thank you all for the replies. Link to comment Share on other sites More sharing options...
jpc Posted April 12, 2020 Share Posted April 12, 2020 23 hours ago, Mark Kmiecik said: Definitely a septarian concretion, and a very nice example! I've got a few in my collection too. Not sure about septarian... in my book sepatarian means that the concretion has cracked and the cracks are filled with (usually) calcite crystals. I see no evidence of septarianism here. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted April 12, 2020 Share Posted April 12, 2020 14 minutes ago, jpc said: Not sure about septarian... in my book sepatarian means that the concretion has cracked and the cracks are filled with (usually) calcite crystals. I see no evidence of septarianism here. Look closer at the second photo. I think I can see the infilled cracks. Top-view and bottom-view photos would really help. P.S. -- septarianism? Now, that's a belief I could really get into! Mark. Fossil hunting is easy -- they don't run away when you shoot at them! Link to comment Share on other sites More sharing options...
jpc Posted April 13, 2020 Share Posted April 13, 2020 4 hours ago, Mark Kmiecik said: Look closer at the second photo. I think I can see the infilled cracks. Top-view and bottom-view photos would really help. P.S. -- septarianism? Now, that's a belief I could really get into! Maybe. Must be time to hit it with a hammer. : ) Link to comment Share on other sites More sharing options...
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