rockroller
spending too much on rocks
Be excellent to each other.
Member since October 2013
Posts: 359
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Post by rockroller on Mar 29, 2014 19:20:22 GMT -5
I'm still trying to see what secrets all of our finds hold inside. On this pic the sun was a little bright and washed out the bands in the white area. I found that if you look at your computer screen at an angle you can see them better. Is that weird or what? This is by far my favorite that I have cut. (@arrowheadave has lots of awesome ones!) There is just so much stuff going on in this agate!! And guess what else these crazy West Texas agates can do? Fluoresce under SW, that's what!! (sorry pic quality is not great, didn't have my camera just my phone) Enjoy! ~Roland
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garock
fully equipped rock polisher
Member since February 2006
Posts: 1,168
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Post by garock on Mar 30, 2014 8:08:23 GMT -5
Love the 2nd stone and the fluoresce photos !
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bsky4463
fully equipped rock polisher
Member since September 2013
Posts: 1,696
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Post by bsky4463 on Mar 30, 2014 22:01:57 GMT -5
Nice finds! Cheers.
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Post by drocknut on Mar 30, 2014 22:07:45 GMT -5
Great finds. It is so cool to see them fluoresce.
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Post by gingerkid on Mar 31, 2014 7:31:24 GMT -5
Very nice finds and cool shot of the Texas agate fluorescing! Is it chalcedony that causes the florescence? Oops, my apologies, rockroller, I've confused myself but have to ask if that's pink chalcedony in the Texas 'agate?'
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rockroller
spending too much on rocks
Be excellent to each other.
Member since October 2013
Posts: 359
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Post by rockroller on Mar 31, 2014 16:07:15 GMT -5
Very nice finds and cool shot of the Texas agate fluorescing! Is it chalcedony that causes the florescence? Oops, my apologies, rockroller, I've confused myself but have to ask if that's pink chalcedony in the Texas 'agate?' Hey gingerkidNo pink that I can tell. I will have to find the one that shows up with the orange and purple color to see what the material looks like. The bright neon yellow/green color is naturally bright white. I was assuming it to be calcite but have not done any real research yet. Not sure what the dark blue patches are either, but I saw that mixed in with several other pieces. It all looks so much more amazing in person!! ~Roland
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Deleted
Deleted Member
Member since January 1970
Posts: 0
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Post by Deleted on Mar 31, 2014 20:46:27 GMT -5
The fluorescence in that color is Uranium. Not much needed at all to make that glow. Perhaps rockncajun or Geoff will have input.
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rockncajun
spending too much on rocks
Member since September 2009
Posts: 344
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Post by rockncajun on Apr 1, 2014 14:39:08 GMT -5
I have also seen that lime green color in lots of petrified wood.
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gemfeller
Cave Dweller
Member since June 2011
Posts: 3,803
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Post by gemfeller on Apr 1, 2014 14:52:57 GMT -5
I have also seen that lime green color in lots of petrified wood. It's interesting to remember that during the great uranium mining boom in the 1950s-60s, some of the richest deposits of carnotite were found in petrified wood.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,685
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Post by Fossilman on Apr 1, 2014 19:36:22 GMT -5
Awesome! Going to have to throw a B/L on my rocks......
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Post by gingerkid on Apr 3, 2014 10:49:06 GMT -5
gemfeller, what is carnotite? Hi, rockncajun! Will some chalcedonies fluoresce, like the pink chalcedony roses from Hidalgo County, New Mexico?
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gemfeller
Cave Dweller
Member since June 2011
Posts: 3,803
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Post by gemfeller on Apr 3, 2014 14:17:19 GMT -5
gingerkid, carnotite is technically a hydrous potassium uranium vanadate. Sedimentary deposits in Utah and Colorado were the primary source of radium for many years -- I think it provided radium for Marie Curie's ultimately fatal experiments. It assumed importance once again later as a source of uranium.
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