AJ USA Posted April 23 Share Posted April 23 This rock was delivered with 5 yards of landscaping river rock. I noticed the strange colors and layers then the imprint on the other side. Any ideas? 1 Link to comment Share on other sites More sharing options...
Thomas.Dodson Posted April 23 Share Posted April 23 I'm not seeing anything identifiable as a fossil. The overall structure is a concretion, the color you are seeing is due to iron content, and the pattern on the back is a common fracture pattern in some rock types when a piece is broken. 3 Link to comment Share on other sites More sharing options...
Fossildude19 Posted April 23 Share Posted April 23 +1 for concretion, with a conchoidal/hackle fringe fracture on the back. 1 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...
Rockwood Posted April 23 Share Posted April 23 The fracture may be in a part of the rock that is more like a chert nodule. Higher silicate content that is. 1 Link to comment Share on other sites More sharing options...
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