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Post by miket on May 10, 2018 21:15:56 GMT -5
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Post by orrum on May 11, 2018 8:10:49 GMT -5
Hey just to get the purists started....dI'd you know a lot of folks say the prairie agates, Fairburns and teepee canyon are all the same? They just weathered out and rolled along to get smoother or rounder. I personally believe this to be true.
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Post by rmf on May 11, 2018 9:51:56 GMT -5
Hey just to get the purists started....dI'd you know a lot of folks say the prairie agates, Fairburns and teepee canyon are all the same? They just weathered out and rolled along to get smoother or rounder. I personally believe this to be true. Not to through a monkey wrench into your thinking, but if that is true how does weathering out of the same formation and rolling along produce different patterns, color and texture. I think this theory needs to explain these differences.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,681
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Post by Fossilman on May 11, 2018 10:02:58 GMT -5
Some nice material there...
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Post by orrum on May 11, 2018 10:32:53 GMT -5
To explain different material go rockhounding at Brenda Az You can find plume, moss, etc right side by side. Same for Brians Head Agate in Utah. Obsidian with sheen, mahogany, triple flow etc all piled within feet of each other. I been to these and many others and have seen it in many other locations. Hope that helps stir the pot! LOL
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,456
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Post by Sabre52 on May 14, 2018 14:09:12 GMT -5
Nah. Prairies and Fairburns are both from sedimentary deposits and both chemically the same I suppose, but Fairburns, like Teepees and Dryheads are true banded fortification agates. Prairies are just cherts with highly variable complex bandings, orbs, blotches, scenes etc. I've seen prairies with a touch of fortifications but not the complex banding of real Fairburns.
Brenda is kind of like Woodward in Texas, Nodular agate and jasper agates from igneous formations in all kinds of patterns. Lots of moss, plume, orbs etc with fortificatins sometimes, but very unlike the Fairburn beds in origin and types if ya really look at them.....Mel
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Post by orrum on May 14, 2018 16:15:31 GMT -5
Oops I meant Dryhead not Teepee. Thanks Mel we love our resident rock expert!##
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Post by miket on May 14, 2018 18:24:57 GMT -5
Thanks for the good information, very informative! I'm sure glad I joined this site! I have so much more to learn, but I'm pretty sure that if I have to ask if a rock that I have is a Fairburn or not, it probably isn't. I'm thinking about getting a tumbler but I have to ask- then what di I do with the tumbles?
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Post by jasoninsd on Feb 14, 2021 20:52:02 GMT -5
miket - I'm weeding through some old threads looking for Dryhead examples and ran across this thread. Anyway, did you ever determine what type of agate those first four are in your pictures? I find a lot of those and have been calling them water or lace agates...but that's not really accurate. That last one you've got pictured in that group looks like Bubble Gum or Fairburn to me - but I can't tell from the pic. Did you ever get that one figured out?
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Post by miket on Feb 15, 2021 10:26:10 GMT -5
miket - I'm weeding through some old threads looking for Dryhead examples and ran across this thread. Anyway, did you ever determine what type of agate those first four are in your pictures? I find a lot of those and have been calling them water or lace agates...but that's not really accurate. That last one you've got pictured in that group looks like Bubble Gum or Fairburn to me - but I can't tell from the pic. Did you ever get that one figured out? Yikes, that's an old one!
I call them water or lace agates, too, but that's only because that's what other people (not on here) have called them. I find a ton of them too and like them- except for the fact that they trick me into thinking they're Fairburns.
I think that that fourth one is the closest to being a Fairburn but I don't really think any of them are.
Right now I don't even know where those are or I would get a better picture...
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Post by jasoninsd on Feb 15, 2021 10:35:52 GMT -5
You and me both. I don't know how many times I've seen one of those and get the "heart palpitations" going, only to subsequently endure the old "let-down"! LOL stephan or Sabre52 - Stephan and/or Mel, any clue what those examples are in the first couple pics Mike posted in the OP?
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Post by miket on Feb 15, 2021 10:39:27 GMT -5
You and me both. I don't know how many times I've seen one of those and get the "heart palpitations" going, only to subsequently endure the old "let-down"! LOL stephan or Sabre52 - Stephan and/or Mel, any clue what those examples are in the first couple pics Mike posted in the OP? You said it before, and it took me a while to learn "The Lesson" as I call it.
If I have to ask, it isn't a Fairburn...
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Post by stephan on Feb 15, 2021 10:51:53 GMT -5
You and me both. I don't know how many times I've seen one of those and get the "heart palpitations" going, only to subsequently endure the old "let-down"! LOL stephan or Sabre52 - Stephan and/or Mel, any clue what those examples are in the first couple pics Mike posted in the OP? No idea. I have little expertise in agates from there, and those are not within that hula hoop. They do look lacy, so that moniker sounds promising.
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Post by Peruano on Feb 15, 2021 18:03:55 GMT -5
Mel hit the basics and you can probe the Nebraska DNR agate site (explore all the names in the agate lexicon for the terms you are hearing) but they point out that bubble gum agates should look like their name implies and that prairie agates are indeed cherts with multiple (can I guess more fuzzy) color inclusions. The fine lines that you are seeing in these agates suggest to me that they are a true agate and and not a colorful chert (even if hiding under a misnomer name of prairie agate) The distinctions may not be clear, but fairburns are supposed to have fortifications. Simple lines may be a matter of orientation or indeed a different agate formation. Here's the general web site both the gallery, and the lexicon are relevant to you guys lucky enough to have them in your little pink hands. Educate us please. snr.unl.edu/data/geologysoils/agates/agatesdatabase.aspx
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Post by jasoninsd on Feb 15, 2021 18:35:25 GMT -5
Mel hit the basics and you can probe the Nebraska DNR agate site (explore all the names in the agate lexicon for the terms you are hearing) but they point out that bubble gum agates should look like their name implies and that prairie agates are indeed cherts with multiple (can I guess more fuzzy) color inclusions. The fine lines that you are seeing in these agates suggest to me that they are a true agate and and not a colorful chert (even if hiding under a misnomer name of prairie agate) The distinctions may not be clear, but fairburns are supposed to have fortifications. Simple lines may be a matter of orientation or indeed a different agate formation. Here's the general web site both the gallery, and the lexicon are relevant to you guys lucky enough to have them in your little pink hands. Educate us please. snr.unl.edu/data/geologysoils/agates/agatesdatabase.aspxHey Tom. Thanks for chiming in and thank you very much for this link. This thread was drudged up from several years ago. I believe Mike and I definitely know those first examples are not Fairburns at this point...but we haven't had (or found) a positive ID on those. I looked through the database in the link you provided for both South Dakota and Nebraska and there was no example (from what I saw) that was similar to the type of agate in those first few pictures Mike posted.
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Post by Peruano on Feb 16, 2021 12:42:54 GMT -5
Jason, I knew you didn't need photos of material laying in your own backyard, but was highlighting the Lexicon on that site. A search for prairie agate lists water agate, and eye agate as synonyms and mentions that prairie agate is a striped to scenic jasper/chert which may even appear to have wood grains. Some of the sources they mention may be located on the net or worth chasing through your libraries.
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Post by jasoninsd on Feb 16, 2021 15:20:09 GMT -5
Jason, I knew you didn't need photos of material laying in your own backyard, but was highlighting the Lexicon on that site. A search for prairie agate lists water agate, and eye agate as synonyms and mentions that prairie agate is a striped to scenic jasper/chert which may even appear to have wood grains. Some of the sources they mention may be located on the net or worth chasing through your libraries. Gotcha! Sometimes I can't see the forest for the trees!
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