Rufus Posted March 1 Share Posted March 1 Hello and thank you for looking. I found this rock in a dry river bed in Nayarit state, Mexico, near an ancient petroglyph site next to the river. I always thought it looked like a little frog, but have not been able to figure out what it might be. I really appreciate your help. It's heavier than the common volcanic lava rock from the area. Link to comment Share on other sites More sharing options...
Rockwood Posted March 1 Share Posted March 1 I don't think this is a fossil. An iron rich concretion would be my guess. 1 2 Link to comment Share on other sites More sharing options...
Charmorgia Posted March 2 Share Posted March 2 garnet mass Link to comment Share on other sites More sharing options...
Fossildude19 Posted March 3 Share Posted March 3 Doesn't look like garnets to me. I think Ironstone concretion, with perhaps a bit of counter septarian weathering, perhaps. 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...
Rufus Posted March 4 Author Share Posted March 4 Thanks so much @Fossildude19 and @Rockwood you really helped point me in the right direction. Link to comment Share on other sites More sharing options...
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