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Post by mohs on Feb 1, 2011 10:56:21 GMT -5
Hello Troops ! This stone was given to me so I don’t know its history I assume it to be sard or cornelian Any other suggestion are appreciated Ed
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Post by gr on Feb 1, 2011 15:40:27 GMT -5
Ed, mostly sard is in the black, grey, and dark brown colors. I suppose it could be in a red color but I've not seen any. Really a cool looking rock though. Adrain may have some input on Sard as it is considered a flint
Gary
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adrian65
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Post by adrian65 on Feb 1, 2011 15:47:42 GMT -5
...Adrain may have some input on Sard as it is considered a flint Gary Thanks for the credit, but I'm not good neither in flint ID, nor in rocks ID in general. Very good looking stones, anyway, especially the first one. Adrian
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Post by mohs on Feb 1, 2011 15:57:06 GMT -5
its all the same rock back and front sort of to speak the white must be the agagitzing chalcedony? amazing how its like a shell or rind on it I'm planning on slicing it in 1/2 hopefully I'm good enough on the 7" blade see how deep it goes but I see hearts! thanks guys!
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dbrealityrocks
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Post by dbrealityrocks on Feb 2, 2011 11:07:28 GMT -5
I bet you'll do well cutting it...you're a hearty rocker after all!!!
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Sabre52
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Post by Sabre52 on Feb 2, 2011 11:14:50 GMT -5
Yeah, Sard is more one of those color definitions than anything else. Quick's book on agate defines it as simply, "translucent brown to reddish brown chalcedony". When it gets more into the red/orange scale it becomes carnelian and when banded it becomes sardonyx. I'd guess many of the translucent brown flints we have here in the hill country would be classified as sard if one went simply by color and not origin.....Mel
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Post by mohs on Feb 2, 2011 11:26:19 GMT -5
I bet you'll do well cutting it...you're a hearty rocker after all!!! thanks db gotta have heart God knows I've ruined a lot of stones ha ha
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Post by mohs on Feb 2, 2011 11:27:08 GMT -5
Thanks Mel !! do you think that white agate shell is somewhat unusual? Ed
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Sabre52
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Post by Sabre52 on Feb 2, 2011 14:34:54 GMT -5
Ed, Nope, lots of agate nodules have those white exterior skins , often from weathering. Indian whiteskin agates are actually named after the weathered white exteriors....Mel
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Post by mohs on Feb 2, 2011 15:57:14 GMT -5
I was bit hesitant about slicing it in 1/2 if it was some unusual occurrence do you think the white goes thru to the heart of this stone? Hopefully this weekend I'll be able to cut it and I'll post pixs.
Thanks Again Mel!
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MikeS
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Post by MikeS on Feb 2, 2011 17:47:03 GMT -5
the pattern of white in it almost suggests to me it could be streaks of opal...I have many limb casts in my collection that have layers of pure white opal in them...looks pretty similar...
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Post by Toad on Feb 2, 2011 18:03:57 GMT -5
Really neat stone.
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Sabre52
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Post by Sabre52 on Feb 2, 2011 18:37:14 GMT -5
Mike is most likely correct. Much of the weathered white shell material that forms the shell and even the opaque banding in some white banded agate, (especially the waterline types) is included white common opal or very similar hydrated chalcedony...Mel
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Post by mohs on Feb 8, 2011 11:02:04 GMT -5
I’m pretty happy with the cut Wish me luck making a heart
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