n8hounder
starting to spend too much on rocks
Member since January 2013
Posts: 177
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Post by n8hounder on Feb 2, 2013 23:30:33 GMT -5
The bigger piece I found when I was 15 hiking with my brother in Colorado. It was in what looked like a mining operation it was a 5 or 7 foot wide 20 or 40 foot high.It was cut through the top of a slight hill. There was so much of it everywhere I don't think they were mining it. But maybe because the only other thing I saw was granite chunks. The other two I found on the road out here I also found the next bigger rock pic on the road in the Kansas outback.. Attachments:
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n8hounder
starting to spend too much on rocks
Member since January 2013
Posts: 177
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Post by n8hounder on Feb 2, 2013 23:33:36 GMT -5
smaller bubbles on this... some more purplish looking stuff on the one edge... Attachments:
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metalsmith
Cave Dweller
Member since October 2012
Posts: 1,537
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Post by metalsmith on Feb 3, 2013 17:02:39 GMT -5
The dark one - pic 282 right handside- looks a bit like haematite - but if this is just a dark version of the white mineral (bottom pic 282) and the top left is the same but sectioned... then I think we're talking chalcedony. The give-away is the bubbly texture - called botryoidal - grape like.
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n8hounder
starting to spend too much on rocks
Member since January 2013
Posts: 177
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Post by n8hounder on Feb 4, 2013 3:54:50 GMT -5
Ahh I knew it was some sort of quarts relation... but I was missing the right words when searching online.. When you look for round crystal formations it doesn't compute. Must be a auxie moron..., You have any idea on what that mining operation was doing there. I have never really seen anything mined quite like that... and also couldn't figure out what they wanted there ... besides that stuff it was only granite gravel it didn't even look close to gold ore ...
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Minnesota Daniel
freely admits to licking rocks
A COUPLE LAKERS
Member since August 2011
Posts: 891
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Post by Minnesota Daniel on Feb 6, 2013 2:53:22 GMT -5
What you might have seen was a small road aggregate "mining" operation. Counties, even townships do that when they can, frequently it's just enough to repair a nearby road. It's easier/cheaper than buying/transporting it. Could have been an ancient river bed, or just some weathered/crumbly bedrock near the surface.
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gravelgrazer
noticing nice landscape pebbles
Member since June 2012
Posts: 76
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Post by gravelgrazer on Feb 17, 2013 23:48:05 GMT -5
botryoidal chalcedony is cool stuff. I bet the inside of the one in the 2nd pic is rad! cool finds!
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