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Post by taylor on Jan 16, 2021 12:11:42 GMT -5
Coprolite? I have read and reread RWA3006 's excellent thread and think this could be coprolite. My DH got this from an estate, so no way of knowing where it came from. What do you think?    I suggested face cut and polish end for a display specimen, but he wanted slabs.   Thanks! |
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Post by jasoninsd on Jan 16, 2021 12:25:34 GMT -5
If it turns out to be, I'm betting that dino ate a lot of salmon! LOL I can definitely see why you'd be asking. I'll be curious to see what this turns out to be.  |
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Post by rmf on Jan 16, 2021 17:04:50 GMT -5
Clearly no veggies.
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RWA3006
Cave Dweller 
Member since March 2009
Posts: 4,594 
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Post by RWA3006 on Jan 16, 2021 17:09:11 GMT -5
Wow, that's pretty! Too bad you don't know the source because that would help identify it plus you could go try to find more. Like some stones and many Utah coprolites it's mysterious the exterior does not hint at the beauty inside. I can only compare it with the Utah coprolites I'm familiar with, so bear in mind I'm no comprehensive expert on the subject. I'll compare it to the material I've handled ... The piece hints at coprolite because of the crust and the agate interior. I note the stone seems quite homogenous inside and the outside appears to have uniform striations. This indicates it is not Utah coprolite because one of the things that sets it apart is a chaotic structure instead of uniformity. When you think about the jumbled stomach contents of a critter it seems to not favor uniformity on the inside or the outside. Of course there are exceptions, but in handling many tons of the material I've never found one like your beautiful specimen. If I ever find a coprolite with the consistency of your stone it would become one of my most prized pieces in my collection because it would be so unique. Perhaps Sabre52 could help identify it. |
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Post by greig on Jan 16, 2021 18:41:54 GMT -5
Mental note: If ever I stand under a dinosaur, keep away from the back end.
I'd love to say you got a coprolite, but I suspect not. Still, it is a nice stone.
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Post by taylor on Jan 18, 2021 0:29:44 GMT -5
Wow, that's pretty! Too bad you don't know the source because that would help identify it plus you could go try to find more. Like some stones and many Utah coprolites it's mysterious the exterior does not hint at the beauty inside. I can only compare it with the Utah coprolites I'm familiar with, so bear in mind I'm no comprehensive expert on the subject. I'll compare it to the material I've handled ... The piece hints at coprolite because of the crust and the agate interior. I note the stone seems quite homogenous inside and the outside appears to have uniform striations. This indicates it is not Utah coprolite because one of the things that sets it apart is a chaotic structure instead of uniformity. When you think about the jumbled stomach contents of a critter it seems to not favor uniformity on the inside or the outside. Of course there are exceptions, but in handling many tons of the material I've never found one like your beautiful specimen. If I ever find a coprolite with the consistency of your stone it would become one of my most prized pieces in my collection because it would be so unique. Perhaps Sabre52 could help identify it. Thank you! It is such a striking color. Would love to have the opportunity to find another in the wild! I agree it certainly isn't from a Hadrosaur. The similarity that I noticed are the light colored lines going from the top into the center like many of yours. Perhaps the pictures are too small to enlarge. Those cream colored lines are solid agate, not fractures. And the flat bottom. It does have some small bits that aren't the salmon color. They are round and dark in color. I will add another picture or two. Considering how many tons of coprolite you have handled, studied, and examined I think you do indeed have expertise! Thanks for checking this unknown out and sharing your knowledge! |
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Post by taylor on Jan 18, 2021 0:36:57 GMT -5
Larger detail, I hope   |
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Post by taylor on Jan 18, 2021 0:41:38 GMT -5
Mental note: If ever I stand under a dinosaur, keep away from the back end. I'd love to say you got a coprolite, but I suspect not. Still, it is a nice stone. So I'm picturing the T-Rex skeleton in the museum. Looking up. Yup! Stay well away from the undersides of dinos! |
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Post by parfive on Jan 18, 2021 3:05:07 GMT -5
Larger detail, I hope This pic has a porcelain look to it, resembles many datolite specimens I’ve seen. |
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Post by jasoninsd on Jan 18, 2021 3:15:52 GMT -5
Larger detail, I hope This pic has a porcelain look to it, resembles many datolite specimens I’ve seen. I just Googled Datolite...there are several images that come up that have a VERY similar interior both in colorization and seeming texture. That looks like a good possibility IMHO. taylor - I've still got my fingers crossed hoping it's dino poo for you...  |
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quartzilla
Cave Dweller
Member since April 2020
Posts: 1,238
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Post by quartzilla on Jan 19, 2021 8:42:58 GMT -5
Could it be bone? The outside sorta has that appearance even though there is no cell type structure on the interior.
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Post by taylor on Jan 22, 2021 23:50:48 GMT -5
Larger detail, I hope This pic has a porcelain look to it, resembles many datolite specimens I’ve seen. Hmmm... I had to look up datolite. In my brief survey of pictures online I saw a couple of pictures with similar interior color. The description of the outside of those datolite was cauliflower. No cauliflower here. Since starting this thread I have started a cab. Hardness is 6.5 to 7. Doesn't seem like a perfect fit to me, but datolite thanks for the suggestion. |
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Post by taylor on Jan 22, 2021 23:53:18 GMT -5
Could it be bone? The outside sorta has that appearance even though there is no cell type structure on the interior. Hopefully someone with waaay more dino bone experience than me will chime in! Tomorrow I will see about getting a better close up so you guys can see better. |
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Post by Rockoonz on Jan 23, 2021 0:40:32 GMT -5
The outside definitely looks like an organic replacement of some kind. Elizabeth and I are leaning towards Florida coral like what's found on the gulf coast side. We have a bit of it and often the polyps only show well on the outside rind that ranges from white to brown and not in the cross section at all. Some type of limb cast may be possible too.
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,490
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Post by Sabre52 on Jan 28, 2021 16:18:41 GMT -5
Could be a chert nodule too. They all have weathered white cortex on the exterior and solid silica of various shades inside. Come in many different colors here in Texas.
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Post by taylor on Jan 29, 2021 0:22:26 GMT -5
Could be a chert nodule too. They all have weathered white cortex on the exterior and solid silica of various shades inside. Come in many different colors here in Texas. Thank you. I don't think I've ever seen any Texas chert. Pictures? |
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,717
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Post by Fossilman on Jan 29, 2021 10:54:59 GMT -5
Defiantly not bone or any type of coral, Or Dino Poop..
It would make some nice arrowheads though, the color is amazing..
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