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Post by Drummond Island Rocks on Apr 13, 2013 19:03:39 GMT -5
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Post by Jugglerguy on Apr 13, 2013 19:15:51 GMT -5
I think those are the best rocks you've ever done. You just made me want some Lakers really bad.
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jamesp
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Post by jamesp on Apr 13, 2013 19:51:16 GMT -5
Tumbled agate does not get better than that.Well done
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Thunder69
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Thunder 2000-2015
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Post by Thunder69 on Apr 13, 2013 20:53:54 GMT -5
Boom!!!!!Those are outstanding.....Exceptional patience too
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rockpickerforever
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Post by rockpickerforever on Apr 13, 2013 21:30:56 GMT -5
Beauties, all of them!! 17 weeks? ![???](//storage.proboards.com/forum/images/smiley/huh.png) You have SO much more patience than I do! Nice job, those are fine lookin'. Jean
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rollingstone
starting to spend too much on rocks
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Post by rollingstone on Apr 13, 2013 22:22:20 GMT -5
Your patience was nicely rewarded -- those are perfect.
- Don
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Minnesota Daniel
freely admits to licking rocks
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Post by Minnesota Daniel on Apr 14, 2013 1:55:42 GMT -5
Wow! It's hard to find rough Lakers that have so few fractures as those do. They are so easy to crack. Well done. Is that a "Skip-an-Atom" in the 5th picture? That doily agate sure is strange.
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riverrock
fully equipped rock polisher
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Post by riverrock on Apr 14, 2013 7:53:30 GMT -5
17 weeks that's a long time but worth it. Did you refresh every week, or just let them run?
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Post by Drummond Island Rocks on Apr 14, 2013 8:16:42 GMT -5
Daniel - that skip an atom is a keeper, It's the only one we have. what did you mean my doily agate?
Riverrock - we cleaned them every week and pulled any ready for 120. We replenished with montana agates as needed to keep the barrel full. These were my 8 yr olds so he wanted to wash and see them every week even though we could have just added grit instead. We did hit the grinders with a few along the way but I try not to grind so much that the shape looks unnatural.
Chuck
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Minnesota Daniel
freely admits to licking rocks
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Post by Minnesota Daniel on Apr 14, 2013 19:22:52 GMT -5
Chuck, the one in the 9th picture looks like a doily doesn't it?
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Post by Drummond Island Rocks on Apr 14, 2013 19:30:42 GMT -5
I see what you mean now. I should have noted that picture 9 and 10 are the same rock. front and back shots. I really liked that one too.
Chuck
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Minnesota Daniel
freely admits to licking rocks
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Post by Minnesota Daniel on Apr 14, 2013 21:32:30 GMT -5
That's one of those "Other" Lake Superior Agates. It's not really a fortification Laker, but not just a moss agate either. It's unique.
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Post by Toad on Apr 15, 2013 5:54:36 GMT -5
Liquid shine. Got some great patterns in there.
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Deleted
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Post by Deleted on Apr 15, 2013 11:48:57 GMT -5
beautiful tumbles
"skip an atom"?? huh?
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snuffy
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Post by snuffy on Apr 15, 2013 13:07:32 GMT -5
That's about good as you could get them.More patience than I seem to have!
snuffy
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Post by Drummond Island Rocks on Apr 15, 2013 17:48:37 GMT -5
Scott - 5th picture top right rock is a rare skip an atom laker.
heres info I found on the web about them:
Other curious and unanswered questions surround the elusive and rare form of Lake Superior Agate known as “Skip ‘N Atom”. The source of this name is unknown. It could have been an old-timer who thought that the agates were just odd enough to have lost one atom of those required to be “normal”. The Skip ‘N Atom is characterized by an unusual crenelated appearance of chalcedony fibers and quartz. This type of formation in Lake Superior Agate is just about the most difficult to find of any of which I am aware. If you find one by all means keep it in your collection. It is a rare and unusual specimen. Potential explanations for this type of formation are limited at this time. However it seems clear that some kind of chemical and/or thermal alteration is responsible which resulted in the partial recrystalization of the agate. In fact, these agates could possibly be more accurately described as metamorphic rocks that have been recrystalized in the manner that alters limestone into marble through heat, pressure, and time. Could skip ‘n atom agates, unique that they apparently are in the world among all known agates, have been formed due to the heat and pressure of a meteoric impact? Do these agates share anything in common with the ‘shocked quartz’ found at impact sites? A more plausible explanation is that contact metamorphism is responsible in which hot molten rock intruded preexisting agate bearing rock to cause the alteration.
Chuck
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jamesp
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Post by jamesp on Apr 15, 2013 20:36:47 GMT -5
Cool.I am into freaks and anomalies.A fine polyped coral that has exceptional color and glassy characteristics called pin head,but is 1 out of 20 to 1 out of 200 depending on where you are.Lake agates are intense and have a lot written about them.And have rare forms and amazing creation.Again,cool.I think all agates have some amazing stories.
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Minnesota Daniel
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Post by Minnesota Daniel on Apr 15, 2013 22:52:17 GMT -5
Here's a pic of my specimen. It's not big and not a great pic either, but you can see where the fortification banding has become "macro-crystallized". ![](http://i442.photobucket.com/albums/qq142/Djf052/skip_zps9b1d85eb.jpg)
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jamesp
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Post by jamesp on Apr 16, 2013 19:22:13 GMT -5
Real cool.So this is a special situation Daniel?
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Minnesota Daniel
freely admits to licking rocks
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Post by Minnesota Daniel on Apr 16, 2013 20:21:07 GMT -5
As Chuck said, these are very uncommon and nobody has a good explanation for them. It isn't just a floater. These were clearly fortification banded, but then something happened, and as you can see, the fortification bands became all distorted, and some of the less colored bands turned into ordinary quartz crystal. As far as I know, they haven't been found in greater concentration in any particular place. There are very few places you can still find Lakers in their original matrix, they've all been scattered by the glaciers, so there's no way to correlate them to any specific geological phenomena either. They're a mystery.
The weirdest ones though are the Copper Replacement Lakers from Michigan's UP.
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