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Post by snowmom on Oct 3, 2014 16:33:40 GMT -5
Look what Gene cut for me... some of my favorites which I had been afraid to cut at first. Now the deed is done, I need to understand what I am looking at. I think most of them are chalcedony or jasper of some sort, and of course the unakite. Gene likes the purple one best, and I have no clue about that one. Anybody able to recognize any of the other stuff from the photos? I find a lot of purple rocks here, most seem to be some variety of quartz but not crystals. What makes a purple colored rock ? I appreciate the time and trouble you took Azgnoinc/Gene, to cut them all and to take pictures of them all. A lot of time and effort involved there! Now if I can just get photobucket to let me copy the pictures to my files!
s1114.photobucket.com/user/azgnoinc/library/SnowMom%20cuts%209-23-14?sort=6&page=1
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,688
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Post by Fossilman on Oct 4, 2014 9:33:59 GMT -5
Nice haul!!!!! I'm liking the red jasper's,going to make some nice goodies with them all.............
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Post by DirtCleaner on Oct 4, 2014 18:03:32 GMT -5
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,546
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Post by tkvancil on Oct 4, 2014 19:14:53 GMT -5
Those are some nice pieces and very good of Gene to do those for you.
Devils Lake State Park in Wisconsin has these purple quartzite bluffs. When I was there years ago I could of sworn that there was a sign that said either magnesium or manganese (one of the m's) made the quartzite purple. When I googled it I found that Baraboo quartzite is purple due to iron or hematite.
Could it be that your are finding quartzite? I know I find some here in Illinois, various shades of purple/violet, white, and the occasional pale green.
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Post by snowmom on Oct 4, 2014 19:43:28 GMT -5
tkvancil, yes, some of it is definitely quartzite, some is more like chalcedony- silky and semi translucent, and some is like jasper,hard, opaque, and very very fine grained.... but we surely have iron. I guess it depends on what it interacts with that produces the color. That makes sense to me. I have heard that iron turns rocks yellow, red, brown, green... now purple... thanks for the info!
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