Mykkhul97 Posted August 13, 2018 Share Posted August 13, 2018 (edited) I have about 2 pounds of what I think is petrified wood, but could be agate? The patterns of grain look like wood, but have seen agates look like it also. Between 5-6 mohs. All of them range from light to dark brown, mocha and every shade of brown in between. Thank you Edited August 13, 2018 by Mykkhul97 I need to put in better pictures Link to comment Share on other sites More sharing options...
ynot Posted August 13, 2018 Share Posted August 13, 2018 The second picture could have some petrified wood, but not sure. All of the other pieces look like agates. 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...
Innocentx Posted August 13, 2018 Share Posted August 13, 2018 It's difficult to see any vascular structure in these. If you could post a photo that shows more detail, it would help. "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Mykkhul97 Posted August 13, 2018 Author Share Posted August 13, 2018 I tried to take better pictures. I have about 2-3 lbs and they all look quite similar to each other. Link to comment Share on other sites More sharing options...
Herb Posted August 13, 2018 Share Posted August 13, 2018 looks like mainly agate to me, nice ones though "Absence of evidence is not evidence of absence"_ Carl Sagen No trees were killed in this posting......however, many innocent electrons were diverted from where they originally intended to go. " I think, therefore I collect fossils." _ Me "When you have eliminated the impossible, whatever remains, however improbable, must be the truth."__S. Holmes "can't we all just get along?" Jack Nicholson from Mars Attacks Link to comment Share on other sites More sharing options...
goatinformationist Posted August 14, 2018 Share Posted August 14, 2018 That looks like a lot of pet wood. Nicely tumbled too. 1 Link to comment Share on other sites More sharing options...
Mykkhul97 Posted August 14, 2018 Author Share Posted August 14, 2018 How can you tell the difference between the two? I cut tons of wood every year and have a lot of bigger pieces of petrified wood... But never this small. When I started tumbling the small pieces, I honestly wasn't sure of what it was. That said, 98% of all of the lot of stones are the same patterns and consistency. So it's either petrified wood or agate or both? Link to comment Share on other sites More sharing options...
ynot Posted August 14, 2018 Share Posted August 14, 2018 If it is all the same then none of it is petrified wood. The banding is wrong and there is no cellular structures evident. I would say it is most likely agate, but it could be banded chert. 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...
Mykkhul97 Posted August 14, 2018 Author Share Posted August 14, 2018 Thank you for your help again. I placed a bunch of pieces together and though it looks like wood, the bands do look like lake agate Link to comment Share on other sites More sharing options...
GeschWhat Posted August 14, 2018 Share Posted August 14, 2018 +1 for petrified wood. It reminds me of the petrified wood I see from the Hell Creek and Lance Formations. Of course, those that I've seen weren't polished. Do you happen to know where they came from? 3 Lori www.areallycrappystory.com/fossils www.facebook.com/fossilpoo Link to comment Share on other sites More sharing options...
Mykkhul97 Posted August 14, 2018 Author Share Posted August 14, 2018 I don't. But there was 3 large blue agates at 2 lbs each and a gallon plus size of smaller pieces of a brown color. And that's the million dollar question. Being that uniform pattern and color is either agate or petrified wood. I just picked it up today and Im leaning on agate.. Link to comment Share on other sites More sharing options...
FranzBernhard Posted August 14, 2018 Share Posted August 14, 2018 Interesting discussion with contraticting opinions! You would need some definitive wood structure in some pieces to be sure (as already mentioned). But during silicification, the wood structure can be totaly destroyed, just leaving agate, chalcedony or something similar behind. Without textural proof of former wood, you can only use the mineralogical term. Franz Bernhard 5 Link to comment Share on other sites More sharing options...
Plax Posted August 14, 2018 Share Posted August 14, 2018 can we see the bottom piece in pic 2 blown up? the light colored streak with darker flecks reminds me of wood structure. Link to comment Share on other sites More sharing options...
Mykkhul97 Posted August 14, 2018 Author Share Posted August 14, 2018 Should be able to tap on it and zoom in 1 Link to comment Share on other sites More sharing options...
Plax Posted August 14, 2018 Share Posted August 14, 2018 that worked well. It looks like wood to me. Just an opinion based on texture which may also occur mineralogically. Franzbernard made a good comment above. Have you tried breaking any of it? 1 Link to comment Share on other sites More sharing options...
goatinformationist Posted August 15, 2018 Share Posted August 15, 2018 Still looks like wood to me too. I have tumbled maybe 50lbs of smalls (pet wood) over the last couple of years. Gotta remember that silicified wood is also called agatized wood. Not really agate, which many point out must be banded, but like agate highly silicified, an agatized pseudomorph of wood. 2 Link to comment Share on other sites More sharing options...
Mykkhul97 Posted August 15, 2018 Author Share Posted August 15, 2018 Agreed Link to comment Share on other sites More sharing options...
ynot Posted August 15, 2018 Share Posted August 15, 2018 I see features within the banding that do not fit with wood but match up to agate fairly well. As for the bottom piece... the specks in it look like small balls (look at the translucent areas) rather than tubes, again fits better with agate than 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...
FranzBernhard Posted August 15, 2018 Share Posted August 15, 2018 Another, more general question: Are there any specimens out there that show both: Silicified wood (with clearly visible wood structure) and true agate (with typical banding) nearby, filling former open spaces. Both within the same specimen. Its just a gut feeling, that it could be possible to have both in the same specimen, but I dont know. Would be interesting to know . Franz Bernhard Link to comment Share on other sites More sharing options...
DPS Ammonite Posted August 15, 2018 Share Posted August 15, 2018 22 minutes ago, FranzBernhard said: Another, more general question: Are there any specimens out there that show both: Silicified wood (with clearly visible wood structure) and true agate (with typical banding) nearby, filling former open spaces. Both within the same specimen. Its just a gut feeling, that it could be possible to have both in the same specimen, but I dont know. Would be interesting to know . Franz Bernhard It is possible to have both. Here is a limb section that is part permineralized wood and part wood cast with layered chalcedony (a close cousin of agate). 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...
FranzBernhard Posted August 15, 2018 Share Posted August 15, 2018 Thanks, DPS, very nice! Thats what I wanted to see. A very, very clear example. Some more out there ? Franz Bernhard Link to comment Share on other sites More sharing options...
Innocentx Posted August 15, 2018 Share Posted August 15, 2018 10 hours ago, DPS Ammonite said: Here is a limb section that is part permineralized wood and part wood cast with layered chalcedony (a close cousin of agate). Beautiful!! Is it yours? Very special! "Journey through a universe ablaze with changes" Phil Ochs Link to comment Share on other sites More sharing options...
Walt Posted August 15, 2018 Share Posted August 15, 2018 I've only found the limb casts like that in Texas Springs, NV. Can we see the side as well? Everything is generated through your own will power ~ Ray Bradbury Link to comment Share on other sites More sharing options...
ynot Posted August 15, 2018 Share Posted August 15, 2018 12 hours ago, FranzBernhard said: Another, more general question: Are there any specimens out there that show both: Silicified wood (with clearly visible wood structure) and true agate (with typical banding) nearby, filling former open spaces. Both within the same specimen. Its just a gut feeling, that it could be possible to have both in the same specimen, but I dont know. Would be interesting to know . Franz Bernhard First off, not all agate/chalidone is banded. Check out Montana moss agate and plume agate. There are many sites where the petrified wood will also have or be agate/chalidone (The 2 terms are considered synonyms, and are mostly regional in use.) The preservation can be very good, showing the minutest details of cellular structures. Or it can be a complete cast of the original piece of wood, with no detail of cellular structures at all. Or anywhere in between the two extremes. You can find petrified wood that runs the full spectrum in the Chinle formation (Arizona's petrified forest.) 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...
FranzBernhard Posted August 15, 2018 Share Posted August 15, 2018 4 minutes ago, ynot said: You can find petrified wood that runs the full spectrum in the Chinle formation (Arizona's petrified forest.) Is there somewhere a kind of "tutorial collection" with endmembers and everything in between on the internet or somewhere in a paper? Franz Bernhard Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now