kerrimarie805 Posted October 3, 2021 Share Posted October 3, 2021 I like lumpy, warty rocks so saw only one side of this before getting it home to see the other side, which I generally expect to be nothing too surprising. This piece, however, is so very different on it's flip side that even though I can see the cross section of it I really can't decide if I've got a crazy rock, track fossil, or an artifact (unlikely at best). I took as many pics as I could as they aren't as good as I'd like. As usual, I was hounding along the river as it rambles through the Nebraska panhandle. Please, post this where it belongs and, as always, I hold what you all say to be true and infallible so I can never be disappointed by what you opine in response to my inquiries! I haven't Beeker'd around with it, torching or smashing, as it's so small--but say the word and I'll happily give it the run of tests. *My sister asked me if I've ever used the word "opine" in conversation, I had not. Screenshot. Done. Lol. Link to comment Share on other sites More sharing options...
Svetlana Posted October 3, 2021 Share Posted October 3, 2021 Hello. Nummulite?.. Link to comment Share on other sites More sharing options...
Ludwigia Posted October 3, 2021 Share Posted October 3, 2021 Banded chert perhaps? Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
Paleorunner Posted October 3, 2021 Share Posted October 3, 2021 I don't know what it is, but I don't see nummulites in this stone. It looked like fossil wood to me, because I saw growth circles, but I don't see vegetal texture, maybe it's geological. In the last photo it looks like flint to me. Wait for answers from the most experts. Link to comment Share on other sites More sharing options...
Notidanodon Posted October 3, 2021 Share Posted October 3, 2021 Looks geological in origin to me, minerals often form rings, look up beekite Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 I'm fairly certain it's not hard enough to be chert or flint, it's definitely not certainchert anyway. Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 So, I thought I was picking up just another version of this stuff, lumpy rocks... But came across some similar ish pieces more like the flip side maybe... However, after doing an image search of nummulites I am going with "Nummulites? Duh!" No one said "duh," but duh on me, 98% sure. Link to comment Share on other sites More sharing options...
Rockwood Posted October 3, 2021 Share Posted October 3, 2021 2 hours ago, Ludwigia said: Banded chert perhaps? Or layered concretion. Can you give us an idea how hard it is ? Another question might be; does the white substance react (bubble) when vinegar is dropped on it ? Link to comment Share on other sites More sharing options...
Rockwood Posted October 3, 2021 Share Posted October 3, 2021 16 minutes ago, kerrimarie805 said: 98% sure Money on the two. 1 Link to comment Share on other sites More sharing options...
Rockwood Posted October 3, 2021 Share Posted October 3, 2021 1 minute ago, Rockwood said: Or layered concretion. Can you give us an idea how hard it is ? Another question might be; does the white substance react (bubble) when vinegar is dropped on it ? 53 minutes ago, kerrimarie805 said: I'm fairly certain it's not hard enough to be chert or flint, it's definitely not certainchert anyway. Oops. Layered concretion it is. Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 I'm still in for nummulites. I wish my phone would take better pics of smaller pieces! I have apple cider vinegar or CLR so I'm going to try both and do some scratching as well. I can say that the inside seems harder than the outside. Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 While we're here, tho...layered concretion? Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 There was no reaction whatsoever to either the apple cider vinegar (LEFT) or the CLR (RIGHT). Link to comment Share on other sites More sharing options...
Top Trilo Posted October 3, 2021 Share Posted October 3, 2021 (edited) I vote concretion too. Notice how the rings are all different distances apart. That to me signifies concretion. Edited October 3, 2021 by Top Trilo “If fossils are not "boggling" your mind then you are simply not doing it right” -Ken (digit) "No fossil is garbage, it´s just not completely preserved” -Franz (FranzBernhard) "With hammer in hand, the open horizon of time, and dear friends by my side, what can we not accomplish together?" -Kane (Kane) "We are in a way conquering time, reuniting members of a long lost family" -Quincy (Opabinia Blues) "I loved reading the trip reports, I loved the sharing, I loved the educational aspect, I loved the humor. It felt like home. It still does" -Mike (Pagurus) “The best deal I ever got was getting accepted as a member on The Fossil Forum. Not only got an invaluable pool of knowledge, but gained a loving family as well.” -Doren (caldigger) "it really is nice, to visit the oasis that is TFF" -Tim (fossildude19) "Life's Good! -Adam (Tidgy's Dad) Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 I was able to scratch the darker rings on the outside surface but my metal point left no scratch on the inside material. As well, no part of the piece reacted to the acids. Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 3, 2021 Author Share Posted October 3, 2021 14 minutes ago, Top Trilo said: I vote concretion too. Notice how the rings are all different distances apart. That to me signifies concretion. Ok, the varying distance between rings has me leaving the nummulite camp. You got me. I will still look up beekite and won't bother to post the possibly slightly better pics I took with my actual camera that isn't any better than my phone by specs but it does macro. Link to comment Share on other sites More sharing options...
kerrimarie805 Posted October 4, 2021 Author Share Posted October 4, 2021 Hands down the only concretion I've spent this much, or any, time trying to identify! Thanks for your help, all, as always! Link to comment Share on other sites More sharing options...
Rockwood Posted October 4, 2021 Share Posted October 4, 2021 There are a number of reasons a concretion might be hard and not react to vinegar, or it may be banded chert as suggested. Often the lines get blurred a bit. Link to comment Share on other sites More sharing options...
Rockwood Posted October 4, 2021 Share Posted October 4, 2021 46 minutes ago, kerrimarie805 said: While we're here, tho...layered concretion? Hard to tell. It could be just the result of the way it fragmented and weathered. 1 Link to comment Share on other sites More sharing options...
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