bradw Posted September 13, 2018 Share Posted September 13, 2018 (edited) Hi All, glad to be a new member here - I've been an avid collector of unique looking rocks and objects found on the beaches of Cape Cod and elsewhere in New England. Here's the first that I'm hoping someone out there can identify. It could just be a cool beach rock - but it always struck me as some kind of bone...(ruler is in Centimeters). Thanks for looking! -Brad Edited September 13, 2018 by bradw Link to comment Share on other sites More sharing options...
Zapsalis Posted September 13, 2018 Share Posted September 13, 2018 Looks geologic to me. 1 Link to comment Share on other sites More sharing options...
bradw Posted September 13, 2018 Author Share Posted September 13, 2018 I do kinda agree...worth a shot right? Thx for looking at it. 1 Link to comment Share on other sites More sharing options...
Zapsalis Posted September 13, 2018 Share Posted September 13, 2018 1 minute ago, bradw said: I do kinda agree...worth a shot right? Thx for looking at it. Indeed! And you’re welcome. I recommend also waiting for more people, because the more opinions, the better. Plus, I’m an amateur. However, coming here has helped me a lot with ID’s, though! 1 Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted September 13, 2018 Share Posted September 13, 2018 I agree. But, indeed, always worth a shot, Brad. 1 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
RJB Posted September 13, 2018 Share Posted September 13, 2018 Yeah, always worth a shot, and I do agree that it is most likely geologic, but there is a very slim chance that it may be a super rare,,,,,,,,,,, Dinosaurius jointus? Sorry, again I could not help myself. Neat lookin rock though. RB Link to comment Share on other sites More sharing options...
bradw Posted September 13, 2018 Author Share Posted September 13, 2018 Thanks RJB and Tidgy's Dad - nice to see the supported vibe in here - especially in a crazy world like we have these days...I see it's not just about posting pics of rocks 1 Link to comment Share on other sites More sharing options...
Innocentx Posted September 13, 2018 Share Posted September 13, 2018 Welcome to the forum @bradw. TFF is a rare place in these times. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
goatinformationist Posted September 13, 2018 Share Posted September 13, 2018 Yeah, whatever it is you are always welcome here. Link to comment Share on other sites More sharing options...
Scylla Posted September 14, 2018 Share Posted September 14, 2018 To be more specific it looks like a concretion of various iron minerals and sand. We get a lot of them here on Long Island from the weathering of pyrite or marcasite. The sulfides get replaced by various oxides and their hydrated forms. According to Wikipedia there are 16 known iron oxides or oxide/hydroxides. 1 Link to comment Share on other sites More sharing options...
bradw Posted September 14, 2018 Author Share Posted September 14, 2018 Thanks Sylla, that makes sense...if that's what it is (partially iron), would it definitely attract a magnet? This one does not - my son has small spherical rare earth magnets. I put one next to it and it has no interest. But it does look like iron I agree and it's very heavy. Link to comment Share on other sites More sharing options...
ynot Posted September 14, 2018 Share Posted September 14, 2018 Most concretions (iron oxides) will not be magnetic. 1 Darwin said: " Man sprang from monkeys." Will Rogers said: " Some of them didn't spring far enough." My Fossil collection - My Mineral collection My favorite thread on TFF. Link to comment Share on other sites More sharing options...
Kane Posted September 14, 2018 Share Posted September 14, 2018 Tony beat me to it! Most iron oxides are not ferromagnetic due to the introduction of oxygen, with the exception of Fe3O4 (magnetite). In oxides, there is still a very small hint of iron-associated magnetic field, but it is much weaker and so will unlikely respond to a conventional magnet. ...How to Philosophize with a Hammer Link to comment Share on other sites More sharing options...
bradw Posted September 14, 2018 Author Share Posted September 14, 2018 That is very cool stuff - thanks guys! Link to comment Share on other sites More sharing options...
DPS Ammonite Posted September 14, 2018 Share Posted September 14, 2018 There is another iron oxide that is strongly magnetic, maghemite: https://en.m.wikipedia.org/wiki/Maghemite @ynot @kane 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...
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