wardo709 Posted December 4, 2017 Share Posted December 4, 2017 Not sure what this is. Please help Link to comment Share on other sites More sharing options...
Fossildude19 Posted December 4, 2017 Share Posted December 4, 2017 Welcome to the Forum. Where was this found? What is the size? Can we get a picture of the other side? 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...
wardo709 Posted December 4, 2017 Author Share Posted December 4, 2017 I believe it was found in the Detroit area. it is about the size of a half dollar, maybe a little bigger Link to comment Share on other sites More sharing options...
ynot Posted December 4, 2017 Share Posted December 4, 2017 Welcome to TFF! I think it is a concretion, not a fossil. Regards, Tony 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...
Sagebrush Steve Posted December 4, 2017 Share Posted December 4, 2017 7 minutes ago, wardo709 said: I believe it was found in the Detroit area. it is about the size of a half dollar, maybe a little bigger 17 minutes ago, wardo709 said: Not sure what this is. Please help Whatever it is, looks like it has been sawed in half. Possibly manmade. The outer gray border looks surprisingly uniform. Link to comment Share on other sites More sharing options...
wardo709 Posted December 4, 2017 Author Share Posted December 4, 2017 Yes I cut it in half Link to comment Share on other sites More sharing options...
Sagebrush Steve Posted December 4, 2017 Share Posted December 4, 2017 Just now, wardo709 said: Yes I cut it in half What did you cut it with? How hard is the material? Link to comment Share on other sites More sharing options...
Douvilleiceras Posted December 4, 2017 Share Posted December 4, 2017 Looks to be a "moqui marble" - a concretion with a sandstone core surrounded by iron oxide. A photo is attached below, courtesy of Paul Heinrich, who uploaded this to Wikipedia. 5 Regards, Jason "Trilobites survived for a total of three hundred million years, almost the whole duration of the Palaeozoic era: who are we johnny-come-latelies to label them as either ‘primitive’ or ‘unsuccessful’? Men have so far survived half a per cent as long." - Richard Fortey, Trilobite: Eyewitness to Evolution. Link to comment Share on other sites More sharing options...
wardo709 Posted December 4, 2017 Author Share Posted December 4, 2017 I cut it with a tile saw. It seemed to cut really easy. The inside feels like sand the out side is a lot harder. Thank you Link to comment Share on other sites More sharing options...
Sagebrush Steve Posted December 4, 2017 Share Posted December 4, 2017 6 minutes ago, Douvilleiceras said: Looks to be a "moqui marble" - a concretion with a sandstone core surrounded by iron oxide. A photo is attached below, courtesy of Paul Heinrich, who uploaded this to Wikipedia. I think you’ve nailed it! Link to comment Share on other sites More sharing options...
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