New Members PMc Posted December 31, 2023 New Members Share Posted December 31, 2023 I am fascinated by this taco-like concretion. Is its contents forever bound to the pyrite, left to me only speculation as to what it might be? Or can the matrix be removed to reveal what it contains? Link to comment Share on other sites More sharing options...
Darktooth Posted December 31, 2023 Share Posted December 31, 2023 (edited) You could try crack it open. But if there is nothing inside then you ruin a decent pyrite specimen. Do you know if these type of concretions are common and sometimes contain fossils? I will say that the last two pics appear like something of interest may be sandwiched in the middle. Edited December 31, 2023 by Darktooth 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
Mark Kmiecik Posted January 1 Share Posted January 1 It looks like one that may respond to the freeze/thaw technique of opening nodules. 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...
Coco Posted January 2 Share Posted January 2 We have pyrite/marcasite nodules in northern France, found in limestone. Generally they contain nothing but often have beautiful shapes. Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici Pareidolia : here Ma bibliothèque PDF 1 (Poissons et sélaciens récents & fossiles) : ici Ma bibliothèque PDF 2 (Animaux vivants - sans poissons ni sélaciens) : ici Mâchoires sélaciennes récentes : ici Hétérodontiques et sélaciens : ici Oeufs sélaciens récents : ici Otolithes de poissons récents ! ici Un Greg... Link to comment Share on other sites More sharing options...
New Members PMc Posted January 2 Author New Members Share Posted January 2 On 12/31/2023 at 3:29 PM, PMc said: On 12/31/2023 at 3:42 PM, Darktooth said: You could try crack it open. But if there is nothing inside then you ruin a decent pyrite specimen. Do you know if these type of concretions are common and sometimes contain fossils? I will say that the last two pics appear like something of interest may be sandwiched in the middle. I suppose I could. But it points out that I would probably be best served by having a SME examine it . I will keep it intact, continue to explore this forum and look for some more. Than Link to comment Share on other sites More sharing options...
jpc Posted January 2 Share Posted January 2 SME? Link to comment Share on other sites More sharing options...
SPrice Posted January 3 Share Posted January 3 (edited) 48 minutes ago, jpc said: SME? An individual with qualifications and experience in a particular field or work process; an individual who by education, training, and/or experience is a recognized expert on a particular subject, topic, or system. A so called - Subject Matter Expert. Edited January 3 by SPrice 1 Link to comment Share on other sites More sharing options...
Darktooth Posted January 3 Share Posted January 3 When It comes to nodules/ concretions, regardless of what they are made of, some contain fossils or minerals and some don't. Unless there is something that shows on the outside of the specimen there is really no way of knowing for sure. Unless you take a chance in opening it. You don't need an SME for that. We have pyritized nodules here in New York. I have opened some and found trilobites, bivalves and cephalopods. Others contained nothing. It's a gamble. 1 1 I like Trilo-butts and I cannot lie. Link to comment Share on other sites More sharing options...
jpc Posted January 3 Share Posted January 3 5 hours ago, SPrice said: An individual with qualifications and experience in a particular field or work process; an individual who by education, training, and/or experience is a recognized expert on a particular subject, topic, or system. A so called - Subject Matter Expert. Glad I asked... I am sure almost of our non-USAian forum members were also wondering. : ) 1 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted January 3 Share Posted January 3 Having collected a few pyrite nodules in the Austin Group in north Texas, I have never seen anything interesting inside the broken ones. Keep them whole. My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Ludwigia Posted January 3 Share Posted January 3 I've collected an awful lot of pyrite nodules in my day and this one looks to me like it wouldn't be worth opening. I'd leave it as is. 1 Greetings from the Lake of Constance. Roger http://www.steinkern.de/ Link to comment Share on other sites More sharing options...
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