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 Apr 7, 2015 23:37:19 GMT -5
Like many of you, just because I don't know what it is doesn't mean I won't feed it to the saw. How else are you going to get to examine the magnificent guts of the beast?!? I don't really expect anyone to identify these guys but any info you might have on something you've seen or something you have would be very interesting. These two pics are from a piece that I'm pretty sure I picked up near the Graveyard Pt area, but on the Idaho side. I have another larger rock that is very similar from the same place. It seems like mostly jasper to me with some small agate pockets and some tiny areas that look like they might be crystals. The dark spots are not pits and the lines that look like fractures are solid. It's only the some of the larger areas of agate or white swirls that have some pits where the materials meet. And I picked up this small rock on the roadside here in Colorado. I will pick up anything that is green, btw! It's actually all green but the pic is washed out. It has several different green hues, with the darkest color being a nice shade of blue-green. At first the veins glistened like gold and I was very excited! But then after washing it off and getting a closer look it just appears like some brown crud and this is where the stone is really pitted. Thanks for looking! ~Roland
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Post by snowmom on Apr 8, 2015 5:55:38 GMT -5
no idea but all a cool as anything! the top 2 make me think of stromatolite , neat colors in it! got a picture of the bottom one before you cut it? hopefully folks familiar with those areas will pick up on this!
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Post by drocknut on Apr 8, 2015 15:08:37 GMT -5
Interesting looking rocks. Gotta keep your saw fed ya know.
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,711
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Post by Fossilman on Apr 8, 2015 16:16:11 GMT -5
No knowledge either,but I would have snagged them too-Thumbs up
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Sabre52
Cave Dweller
Me and my gal, Rosie
Member since August 2005
Posts: 20,487
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Post by Sabre52 on Apr 9, 2015 7:56:37 GMT -5
First one looks a lot like rhyolite to me. Not the wonderstone sort but rather closer to the leopardskin sort. Lots of examples very much like yours on the California and Arizona deserts and many are quite well silicified. Rhyolite is among the host rocks up in the GYP area. Your second example appears to be some kind of chert or chalcedony type stuff. So many examples of that sort all over the place anywhere you find microcrystalline quartz specimens. We'd usually just put it under the heading of white chalcedony with inclusions.....Mel
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