Hanzo0515
off to a rocking start
Member since January 2024
Posts: 5
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Post by Hanzo0515 on Apr 7, 2024 11:05:31 GMT -5
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Post by vegasjames on Apr 8, 2024 2:29:02 GMT -5
It does not look like petrified wood to me. I would say a form of chalcedony such as a banded chert.
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RWA3006
Cave Dweller
Member since March 2009
Posts: 4,208
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Post by RWA3006 on Apr 8, 2024 7:10:59 GMT -5
It does not look quite right to my eye for pet wood.
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Post by rockjunquie on Apr 8, 2024 7:15:36 GMT -5
I vote- not wood. Just doesn't look right.
Edit to add- GREAT job getting cloudinary up and running!!
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Hanzo0515
off to a rocking start
Member since January 2024
Posts: 5
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Post by Hanzo0515 on Apr 9, 2024 8:49:40 GMT -5
Thanks for the input! And it was quite tricky getting the cloudinary thing going but I think I'm getting the hang of it, hehe!
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Post by rmf on Apr 9, 2024 18:20:43 GMT -5
Hanzo0515 it does kind of look like wood to me but given where you found it maybe not so much. Since MN has been glaciated it is possible to get wood from glacial till, though usually small pcs. But your best bet is Iron rich rhyolite. Do you have access to a rock saw? Hardness you listed above would be 5 or greater. Try to scratch with agate/quartz. if it scratches then h is less than 7. That would be a good range for rhyolite
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chris1956
fully equipped rock polisher
Member since July 2022
Posts: 1,249
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Post by chris1956 on Apr 9, 2024 19:22:29 GMT -5
I find small amounts of petrified wood in northwest Missouri. I always figured this came by glaciers from Minnesota or somewhere north of there along with finding LSAs, banded iron and red jasper I find here. I don't find stuff like copper minerals, unakite etc that you find in the upper penensula of Michigan so pretty sure the glaciers were coming mostly from the north to here which is similar to what I have seen on glacial movement maps.
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victor1941
fully equipped rock polisher
Member since November 2011
Posts: 1,979
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Post by victor1941 on Apr 10, 2024 9:22:51 GMT -5
Cut or grind the top smooth(picture #1) and look for cellular structure.
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Post by velodromed on Apr 10, 2024 15:09:49 GMT -5
It definitely looks like petrified wood, my stepdaughter agrees as well and she’s got a really good eye. We have found much much of it here in Central Texas.
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Hanzo0515
off to a rocking start
Member since January 2024
Posts: 5
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Post by Hanzo0515 on Apr 15, 2024 14:40:30 GMT -5
" Hanzo0515 it does kind of look like wood to me but given where you found it maybe not so much. Since MN has been glaciated it is possible to get wood from glacial till, though usually small pcs. But your best bet is Iron rich rhyolite. Do you have access to a rock saw? Hardness you listed above would be 5 or greater. Try to scratch with agate/quartz. if it scratches then h is less than 7. That would be a good range for rhyolite" I don't have access to a rock saw, but I plan on buying one later this year. I tried to scratch it with a big chunk of quartz, but I only saw a white residue from the quartz. When I wiped away the residue, there still wasn't a scratch on it.
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