Porcoa Posted June 1, 2017 Share Posted June 1, 2017 Looking for some expertise on what I could have. It may just be chert, agate, chalcedony, or something else. Coprolite? It has fossils in it. This one reminds me of coprolite as well... Here's some others that I'm not sure about. Close ups of the top left one in the previous two pictures. Last one. I don't know what this is. It has a pattern on one side... Reminds me of plaster that was wrapped with linen. Thanks! Link to comment Share on other sites More sharing options...
DPS Ammonite Posted June 1, 2017 Share Posted June 1, 2017 The second photo has bryozoa in it. Could the one that looks like it has a linen impression be a piece of humanite, a piece of cement or concrete? Let's see a picture of the edge. Is the next photo another view of the linen rock? 2 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...
doushantuo Posted June 1, 2017 Share Posted June 1, 2017 "humanite" You just coined that term? I like it 2 Link to comment Share on other sites More sharing options...
DPS Ammonite Posted June 1, 2017 Share Posted June 1, 2017 Most humanites are leaverites including bricks, road asphalt, tile and concrete. 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...
doushantuo Posted June 1, 2017 Share Posted June 1, 2017 mwah "Anthropocene artefacts" 1 Link to comment Share on other sites More sharing options...
Porcoa Posted June 1, 2017 Author Share Posted June 1, 2017 14 minutes ago, DPS Ammonite said: The second photo has bryozoa in it. Could the one that looks like it has a linen impression be a piece of humanite, a piece of cement of concrete? Let's see a picture of the edge. Are the last three photos of the same rock? Does it having bryozoa rule out it being coprolite? And yes, the last three are of the same rock. I don't think it's cement or concrete. It's lightweight and chalky, maybe limestone? The inside feels chalky as well. Here are a couple of extra photos. Link to comment Share on other sites More sharing options...
DPS Ammonite Posted June 1, 2017 Share Posted June 1, 2017 Here's how to properly classify fossils and rocks: keepers to put in your collection ones to trade ones to give away to kids and schools yard rocks- big ones to put outside leaverites- not worth picking up; you leave them right there. Includes most humanites. 2 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...
DPS Ammonite Posted June 1, 2017 Share Posted June 1, 2017 A coprolite is unlikely to have bryozoa in it. A chunck of limestone or chert with fossils is most likely. The linen rock may also be plaster. An impression of a sponge is also a possibility. Where are the two rocks from and what is the type and age of rock layers nearby? 3 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...
Porcoa Posted June 1, 2017 Author Share Posted June 1, 2017 1 minute ago, DPS Ammonite said: A coprolite is unlikely to have bryozoa in it. A chunck of limestone or chert with fossils is most likely. The linen rock may also be plaster. An impression of a sponge is also a possibility. Where are the two rocks from and what is the type and age of rock layers nearby? All found in NE Oklahoma. Either in a river or creek, I've lost track. I couldn't tell you about the rock layers. Link to comment Share on other sites More sharing options...
Rockwood Posted June 1, 2017 Share Posted June 1, 2017 2 hours ago, Porcoa said: Last one. I don't know what this is. It has a pattern on one side... Reminds me of plaster that was wrapped with linen. More likely burlap or modern tarpaulin weave. Cement products become unusable if they get damp. Unless this was found in a very remote area this seems almost certainly what this one is. 2 Link to comment Share on other sites More sharing options...
Plax Posted June 1, 2017 Share Posted June 1, 2017 If the last 4 pics in the original series of photos are of the same specimen I'd say it's not humanite. I like the term! Link to comment Share on other sites More sharing options...
ynot Posted June 1, 2017 Share Posted June 1, 2017 I see a cloth like pattern in the last piece, not an organic one. This pattern is only on the surface and not internal to the piece. Agree with "humanite". Could it be part of a plaster of paris sculpture? That would account for the light weight of the object. 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...
GeschWhat Posted June 1, 2017 Share Posted June 1, 2017 7 hours ago, DPS Ammonite said: A coprolite is unlikely to have bryozoa in it. A chunck of limestone or chert with fossils is most likely. I agree. It doesn't look like coprolite to me. Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
Porcoa Posted June 3, 2017 Author Share Posted June 3, 2017 On 6/1/2017 at 8:59 AM, ynot said: I see a cloth like pattern in the last piece, not an organic one. This pattern is only on the surface and not internal to the piece. Agree with "humanite". Could it be part of a plaster of paris sculpture? That would account for the light weight of the object. It could be I suppose. I'm not really sure... To me, it seems too hard to be plaster. It is quite soft, but when I think of plaster, I think way softer than this. The inside has the same feel to it, porous and chalky, just not as smooth as the outside layer. Link to comment Share on other sites More sharing options...
Porcoa Posted June 3, 2017 Author Share Posted June 3, 2017 On 6/1/2017 at 3:45 AM, Rockwood said: More likely burlap or modern tarpaulin weave. Cement products become unusable if they get damp. Unless this was found in a very remote area this seems almost certainly what this one is. It looks like there could be an aggregate in the center. But even those parts are soft and chalky. I wouldn't think the aggregate would deteriorate... And how it has two layers. They have a similar hardness/chalky feel, but they look totally different. It just doesn't seem like cement to me in any way, other than the bumpy appearance of the interior layer. I just have no idea, it may be cement. Link to comment Share on other sites More sharing options...
ynot Posted June 3, 2017 Share Posted June 3, 2017 There are all sorts of man made ceramics, of varying hardness. 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...
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