rollingstone
starting to spend too much on rocks
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Member since July 2009
Posts: 236
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Post by rollingstone on Aug 26, 2013 1:26:59 GMT -5
I'm not sure what this rock is. I want to call it granitic-gniess but I really don't know if that's correct or not. I find it locally in river gravels, which are a mixture of glacial till rocks from the Canadian Shield and metamorphic/sedimentary rocks from the Rocky Mountains. So it could be just about anything ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) At any rate, it is pretty rare to find in tumbling grade, so I keep it when I find it, and finally tumbled a batch. ![](http://img.photobucket.com/albums/v295/rollingstone/2013/Aug2513MysteryRock1.jpg) ![](http://img.photobucket.com/albums/v295/rollingstone/2013/Aug2513MysteryRock2.jpg) ![](http://img.photobucket.com/albums/v295/rollingstone/2013/Aug2513MysteryRock3.jpg) ![](http://img.photobucket.com/albums/v295/rollingstone/2013/Aug2513MysteryRock4.jpg) ![](http://img.photobucket.com/albums/v295/rollingstone/2013/Aug2513MysteryRock5.jpg) Thanks for lookikng! -Don
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tkvancil
fully equipped rock polisher
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Member since September 2011
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Post by tkvancil on Aug 26, 2013 11:34:58 GMT -5
Great shine on those !! Not sure what they are but I find them here in Illinois too.
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Post by Jugglerguy on Aug 26, 2013 12:24:17 GMT -5
I'm not sure what it is, but it sure is shiny! You always have the best shine on your rocks and you know how to photograph it. Do you want to share your photography secrets?
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Post by pghram on Aug 26, 2013 13:43:31 GMT -5
Nice red color and a great shine.
Rich
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Deleted
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Member since January 1970
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Post by Deleted on Aug 26, 2013 13:47:17 GMT -5
sorry dude, it's too shiny. I can't see the rocks!
HA! Great job!
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snuffy
Cave Dweller
Member since May 2009
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Post by snuffy on Aug 26, 2013 17:14:20 GMT -5
Whatever they are,made a great batch.Shine!!
snuffy
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rollingstone
starting to spend too much on rocks
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Member since July 2009
Posts: 236
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Post by rollingstone on Aug 27, 2013 0:36:49 GMT -5
Thanks everyone! It's always fun to tumble stuff found locally, it seems to enhance the overall experience.
Jugglerguy -- Thanks, but I'm not sure there's any great secret to photographing tumbles, just use a camera with a good macro setting so you can get nice and close, and take tumble photos in the shade, never in the harsh glare of direct sunlight.
-Don
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Post by Jugglerguy on Aug 27, 2013 6:15:48 GMT -5
Thanks Don, I've been doing mine on the kitchen counter with lots of lights on. It sounds like you take yours outside. I'll have to experiment with different locations.
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Post by Drummond Island Rocks on Aug 27, 2013 6:27:58 GMT -5
Those have great color and shine whatever they are. Nice job.
Chuck
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jamesp
Cave Dweller
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Post by jamesp on Aug 27, 2013 8:51:41 GMT -5
Looks like granite gneiss like you said. It rounded so much that it seems like a granite. Streams can round anything.The off color one sure looks like Georgia granite.Bet it is mostly felspar. Get a sharp piece of quartz and scratch it. Look up felspars. It is not normally that red though. That would be exceptional. Look at the layered texture-looks similar to your tumbles ![](http://scienceforkids.kidipede.com/geology/rocks/igneous/pictures/feldspar.jpg)
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