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Post by tkrueger3 on Sept 24, 2010 14:26:52 GMT -5
I found this slab, a bit bigger than my hand, amongst a pile of rocks and stuff that I was given. I am going to attempt to polish one side of it using 8" sanding discs and Ultralap polishing discs, on the 8" lap plate mounted on the right side of my Lortone arbor. My Expando is mounted on the left side of it. I just dopped a pair of dop sticks onto the back of this slab, so I can maybe have a little control over it against the vertical lap discs. I hope. However, I don't know what to call it. Any ideas? If you have a guess, or if you know for sure, please chime in here and let me know! Backlit: Thanks for any info you can supply! Tom
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Don
Cave Dweller
He wants you too, Malachi.
Member since December 2009
Posts: 2,616
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Post by Don on Sept 24, 2010 15:41:40 GMT -5
I'm 99% positive that this is "cosmo" agate from Cedar City, UT.
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rons
spending too much on rocks
Member since March 2010
Posts: 450
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Post by rons on Sept 24, 2010 16:48:40 GMT -5
I'll 2nd that looks like a couple slabs I cut
Ron
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Post by tkrueger3 on Sept 24, 2010 17:42:14 GMT -5
Cool! Thanks, guys - I always like to have a proper label for these things, and since I've never really studied the field, nor have I ever been on a rockhounding expedition, I'm often at a loss when I find something new to me.
Does cosmo agate occur in big chunks of rock, or is it found in thundereggs? Reason I ask is I have a few thunderegg halves that seem to me like the insides are pretty much just like this slab, only a lot smaller.
Thanks again,
Tom
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Post by frane on Sept 25, 2010 11:06:27 GMT -5
That is really pretty Tom! I am glad you have a name for it now! Fran
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Don
Cave Dweller
He wants you too, Malachi.
Member since December 2009
Posts: 2,616
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Post by Don on Sept 28, 2010 14:02:29 GMT -5
Cosmo agate forms in seams and nodules. huge boulders of it can be found eroding out of the mountain side.
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