bcpgkap Posted October 31, 2016 Share Posted October 31, 2016 Hi. I wondered if anyone might know what this is likely to be? It was found on a beach on the south coast of the Isle of Wight. Very dense, smells metalic but not magnetic. Approx three inches long. Wondering if it's a coprolite or just a lump of rock?! Thanks. Link to comment Share on other sites More sharing options...
lissa318 Posted October 31, 2016 Share Posted October 31, 2016 My guess would be iron nodule or concretion sure others will comment as well. Welcome to the forum! 1 Link to comment Share on other sites More sharing options...
bcpgkap Posted October 31, 2016 Author Share Posted October 31, 2016 thank you! Ah ok. I forgot to mention too that I scraped it on some unglazed ceramic and it leaves a black/or poss very dark brown mark. Would this be right? Link to comment Share on other sites More sharing options...
Coco Posted October 31, 2016 Share Posted October 31, 2016 Hi, Probably marcassite (mineral : FeS2). Coco ---------------------- OUTIL POUR MESURER VOS FOSSILES : ici 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...
GeschWhat Posted October 31, 2016 Share Posted October 31, 2016 Most of the coprolites that I have seen from the Isle of Wight are somewhat pyritized...so they would be dense and smell metallic. However, I don't know how common it is to find concretions in the area. That said, it is really hard say definitively whether or not coprolite that has undergone this fossilization process is in fact a coprolite, unless it contains bone or scale inclusions. I would call it a possible coprolite. Nice find and welcome to the forum! 1 Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
bcpgkap Posted November 1, 2016 Author Share Posted November 1, 2016 Great, thanks for the help everyone. I am a biologist but my 5 year old has got into dinosaurs/fossils etc and I must admit I find it pretty interesting too! Link to comment Share on other sites More sharing options...
abyssunder Posted November 1, 2016 Share Posted November 1, 2016 It looks like this one from: Here 1 " We are not separate and independent entities, but like links in a chain, and we could not by any means be what we are without those who went before us and showed us the way. " Thomas Mann My Library Link to comment Share on other sites More sharing options...
GeschWhat Posted November 1, 2016 Share Posted November 1, 2016 20 minutes ago, abyssunder said: It looks like this one from: Here Now that one really looks like a prehistoric pile! It makes me wonder if it had digestive origins or if it is similar to the siderite extrusions in the Wilkes Formation in Washington State. Although those usually aren't flattened. It is interesting how that one has (for lack of a better term) a compression seam along the outside edges. It looks like a cast. Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
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