0lderthandirt Posted July 30, 2017 Share Posted July 30, 2017 Hello, Let me start by apologizing for not reading the FAQ. I wanted to but I couldn't find it. I even searched in forums. I pulled down the menu on the right upper corner several times. I live in northwest Arizona, about 25 miles south of the grand canyon. I recently acquired the neighboring 40 acres to me. Tons of fossils. But he left me these large green rocks and that's what this posting is about. I took this picture today, cloudy and just to send to my brother but then I remembered this site, so here I am. Any ideas on what these 3 green rocks are? Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
ynot Posted July 30, 2017 Share Posted July 30, 2017 Welcome to TFF! Look like pieces of shale. But better close up pictures may alter that opinion. 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...
izak_ Posted July 30, 2017 Share Posted July 30, 2017 Looks like slate to me. Can we have a picture of the ends? And you're lucky to have heaps of fossils on your property! Link to comment Share on other sites More sharing options...
0lderthandirt Posted July 30, 2017 Author Share Posted July 30, 2017 Thanks for such a fast reply! Amazingly I just saw the FAQ, i guess i hadn't actually been to the home page here. This was the only other picture I took today, I can take more tomorrow though. For some reason the pictures don't show how green they actually are. Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
ynot Posted July 30, 2017 Share Posted July 30, 2017 Shale or slate, dependent on how hard it is. Not petrified wood. 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...
Plantguy Posted July 30, 2017 Share Posted July 30, 2017 Interesting. Yep the lighting can change the colors in photos a great deal. Those samples do look a little shaley...what does the cross section look like? If I can find them I've got a few very small pieces of chromium wood somewhere. I'll post if I can snag them--I dont recall if there is any grain structure left thats visible. Hoping to see more of the other fossil material you have. Regards, Chris Link to comment Share on other sites More sharing options...
0lderthandirt Posted July 30, 2017 Author Share Posted July 30, 2017 I brought in the smaller piece and took a picture from each end. It is more green than my phone camera shows. I can probably do some magnification also. Thanks for taking such an interest ,can't wait to post actual fossil pics. Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Doctor Mud Posted July 30, 2017 Share Posted July 30, 2017 @ynot is on the money. This is a metamorphic rock and a metamorphic texture - foliation can superficially resemble wood grain. The green could be chlorite which forms by alteration of clay minerals with heat and pressure. 3 Link to comment Share on other sites More sharing options...
doushantuo Posted July 30, 2017 Share Posted July 30, 2017 I'd trust someone named dr Mud on metapelitic lithologies Link to comment Share on other sites More sharing options...
Doctor Mud Posted July 30, 2017 Share Posted July 30, 2017 11 minutes ago, doushantuo said: I'd trust someone named dr Mud on metapelitic lithologies Usually the the mud I look at is a bit younger and softer - Holocene. And will get heated to 80 degrees maybe if I need to process it for fossils. There used to be a joke in the geology dept. you were a hard rock or soft rock geologist with all the associated innuendo that went with those words...... 1 Link to comment Share on other sites More sharing options...
0lderthandirt Posted July 30, 2017 Author Share Posted July 30, 2017 Thanks for all the input. I just watched a coupe YouTube videos on slate and shale. This is far too hard to be shale but it sure could be slate. Funny because it does look almost identical to what I see people selling as the green petrified wood from that one old tree in Arizona. I've never played with slate, but after watching the videos I can say that this stuff would take a good hit to make it split because I've dropped it and tossed it around and not even a tiny sliver has ever broke off. I'll post pics of the others with the white rock on the end that looks like it was mortared, I always thought that was like mud it was sitting in as it petrified but maybe slate does that too. This is all very interesting, I'm glad I joined Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Doctor Mud Posted July 30, 2017 Share Posted July 30, 2017 5 minutes ago, 0lderthandirt said: Thanks for all the input. I just watched a coupe YouTube videos on slate and shale. This is far too hard to be shale but it sure could be slate. Funny because it does look almost identical to what I see people selling as the green petrified wood from that one old tree in Arizona. I've never played with slate, but after watching the videos I can say that this stuff would take a good hit to make it split because I've dropped it and tossed it around and not even a tiny sliver has ever broke off. I'll post pics of the others with the white rock on the end that looks like it was mortared, I always thought that was like mud it was sitting in as it petrified but maybe slate does that too. This is all very interesting, I'm glad I joined No problem! Looking forward to your next images. The "mortar" could be Quartz veins which can also be common in metamorphic rock, but I'll wait to see your pics. Link to comment Share on other sites More sharing options...
Arizona Chris Posted July 30, 2017 Share Posted July 30, 2017 Chlorite Schist. We have this on Mount Ord in central Arizona. ---------------------------------------------------------------------------------------------------------------------------- Arizona Chris Paleo Web Site: http://schursastrophotography.com/fossiladventures.html Link to comment Share on other sites More sharing options...
0lderthandirt Posted July 30, 2017 Author Share Posted July 30, 2017 I just looked up Chlorite Schist and I think you're right. So I've got a crock of schist... figures Will your next answer to my question be no? Link to comment Share on other sites More sharing options...
Peat Burns Posted July 30, 2017 Share Posted July 30, 2017 1 hour ago, 0lderthandirt said: I just looked up Chlorite Schist and I think you're right. So I've got a crock of schist... figures well done Link to comment Share on other sites More sharing options...
Plantguy Posted August 4, 2017 Share Posted August 4, 2017 Yup agree with the others on the metamorphic rock/chlorite schist. good call. Cool.. I'd still keep a sample. Well my memory continues to fade unfortunately. My recollection of what the heck I had with respect to the wood sample was wrong...No chlorite wood example, but a malachite (Cu) sample from New Mexico...Uggh...Not even sort of close!! Oh well, you can still see a wood texture that is a bit different than your schist. Regards, Chris Link to comment Share on other sites More sharing options...
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