bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Dec 3, 2013 9:50:52 GMT -5
Winter is back and this time likely to stay....so I plan to make the most of it and put this concretion thru the freeze/thaw routine and try to get it to pop. Its from eastern MT - any guesses as to what maybe in it?  ? Or is it a dud? I will post again when the core is revealed. Cheers  |
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,602
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Post by jamesp on Dec 3, 2013 10:28:26 GMT -5
I looked at the white and blue weather coming to Georgia. Wish you guys would keep it over there. Looked like a humongo blizzard. Gotta go split some fire wood.
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Post by jakesrocks on Dec 3, 2013 12:24:49 GMT -5
Does the concretion show any visible parting lines ? Being from Montana, the freeze / thaw cycle may not phase it.
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Post by orrum on Dec 3, 2013 12:29:13 GMT -5
How a hillbilly cowboy cracks rose quartz up........ Freeze in freezer real good, throw in salty boiling water. Works pretty good.
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Dec 3, 2013 15:09:25 GMT -5
no cracks - never tried freeze/thaw before. but i thought i would try to be civilized with this one (vs the sledge).
will try the hillbilly cowboy method if no results
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,718 
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Post by Fossilman on Dec 3, 2013 16:16:10 GMT -5
I'll bet its quartz inside.....
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Post by orrum on Dec 3, 2013 19:54:22 GMT -5
South Texas has flint that looks like that.
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Post by 1dave on Dec 4, 2013 8:33:14 GMT -5
Winter is back and this time likely to stay....so I plan to make the most of it and put this concretion thru the freeze/thaw routine and try to get it to pop. Its from eastern MT - any guesses as to what maybe in it? ? Or is it a dud? I will post again when the core is revealed. Cheers Works well IF you have fractures that can fill with water that will freeze and wedge it apart. No fractures, no joy. I spent "years" doing this to get the cores out of thundereggs. I ended up with 4 nice cores. 3 fell apart on their own.  NOTE: The above image is from Mindat. I'm experimenting to see if it will stay. |
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Post by jakesrocks on Dec 4, 2013 9:24:27 GMT -5
The freeze / thaw thing works on some fossils. Need to take a dental pic after thawing and pop the loose matrix off, and then refreeze. It takes several cycles to get most of the matrix off.
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Post by orrum on Dec 4, 2013 9:54:05 GMT -5
Dave n Don r right. If there r no cracks then no progress. Also it takes several freeze thaw cycles n betwern the boiling water.
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Dec 4, 2013 10:34:17 GMT -5
Thanks all for the input. I will run it thru a few cycles, and then redirect if now progress. Cheers.
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? Or is it a dud? I will post again when the core is revealed. Cheers
