timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Oct 27, 2017 18:30:05 GMT -5
Found this a month or so ago. Looks to be like a mossy Jasper type but not sure? Would appreciate any help identifying this. I couldn't stand it any longer so had to make a cut to see what was inside.
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<'))))>< Fish
Cave Dweller
Gone Fishing
Member since April 2005
Posts: 1,841
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Post by <'))))>< Fish on Oct 27, 2017 18:57:52 GMT -5
Where did you find it
Looks a little like Morgan Hill
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timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Oct 27, 2017 19:16:18 GMT -5
Lake Superior
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Post by fernwood on Oct 27, 2017 20:26:15 GMT -5
Great Superior find. Not a laker for sure. What area of Superior, if I amy ask? Certain regions have certain more rare finds, but they are found. I have searched both the South and North Shore, AKA Canada. CAll it old stomping grounds.
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timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Oct 28, 2017 12:32:14 GMT -5
South shore! I started picking years ago while camping up there.
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Post by fernwood on Oct 28, 2017 18:50:23 GMT -5
Could be a jasper fossil. Hard to tell, but close up can you see any indication that the circles may have been something alive at one time?
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Post by MsAli on Nov 4, 2017 19:53:35 GMT -5
There is Jasper there especially around split rock.
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Post by toiv0 on Nov 5, 2017 6:49:40 GMT -5
How hard is it? Is it Sandy in texture.
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timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Nov 8, 2017 7:58:40 GMT -5
I'm pretty sure that it is Poppy Jasper, looks exactly like many of the Poppy Jasper photos that I have found on the internet. The brown colors are a different and softer mineral that filled in tiny holes over time. They are the first to crack/pop when sanding. I ended up taking it to a Lapidary club and working on it for a while. I then put it in the VIB tumbler with a batch. Should be done in a few days. I know that it won't b perfect because of the softer material but still a very interesting piece.
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ubermenehune
spending too much on rocks
Member since March 2016
Posts: 293
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Post by ubermenehune on Nov 8, 2017 17:33:04 GMT -5
Another option, if it's not a jasper, is some sort of orbicular rhyolite. Easy way to tell would be testing the hardness.
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Post by Peruano on Nov 9, 2017 5:56:04 GMT -5
I know its dangerous to argue common names, but its my impression that nearly all of the orbicular jaspers are not really jaspers at all but rather are rhyolites. Yes there are variations in color and orbs, but they have a volcanic rhyolitic origin.
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timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Nov 9, 2017 9:10:50 GMT -5
Hey, Thanks for the information. I didn't realize that orbicular rhyolite had similar characteristics. I'll have to check the hardness again when I get home with my pick kit.
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Post by MsAli on Nov 9, 2017 12:02:09 GMT -5
Just spent the morning reading UOM-DULTH (Minnesota Box of rocks) PDF. I would agree and say that this very well could be Rhyolite.
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Post by adam on Nov 9, 2017 12:12:02 GMT -5
Another option, if it's not a jasper, is some sort of orbicular rhyolite. Easy way to tell would be testing the hardness. You're probably right on the money. A lake Superior variety of orbicular rhyolite. Kewl...
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Post by fantastic5 on Nov 9, 2017 12:40:42 GMT -5
Whatever it is it's a keeper!
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timd
starting to shine!
Member since October 2017
Posts: 27
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Post by timd on Nov 10, 2017 13:53:22 GMT -5
It's a nice one for sure. I did check again for the hardness with my pick set and it is softer than Jasper. It must be the orbicular rhyolite. Being a softer material is why it's not polishing up like a jasper would. Good to know what I've found regardless. I cleaned it up a bit and will post a photo tomorrow.
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