crispycookies
off to a rocking start
Member since August 2014
Posts: 1
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Post by crispycookies on Aug 13, 2014 0:37:18 GMT -5
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Fossilman
Cave Dweller
Member since January 2009
Posts: 20,676
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Post by Fossilman on Aug 17, 2014 8:55:03 GMT -5
Around here,that would be a green jasper of some sort..Nice!
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Post by snowmom on Aug 18, 2014 5:34:04 GMT -5
very pretty stuff... hope somebody can identify it...
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Post by Drummond Island Rocks on Aug 18, 2014 7:48:32 GMT -5
Cool piece. I can't help with the I.D. but a general location may help others with the I.D. Your slag looks like Lake Michigan Leland blue.
Chuck
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mibeachrocks
starting to spend too much on rocks
Member since September 2013
Posts: 198
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Post by mibeachrocks on Aug 18, 2014 9:13:31 GMT -5
Without knowing more about where it was found and what else can be found there (e.g., green jasper per fossilman), it is difficult to say. I agree with Drummond Island Rocks, it might be a blueish slag known around here as leland blue. I collect quite a bit around here in Michigan and find that it can take on a wide variety of colors in the grey, black, blue and green color spectrum. For whatever reason, I find that the green slag from the leland area has more air pockets and looks like swiss cheese while the blueish stones are likely to have inclusions of other minerals and look speckled like the one above. While the color and presence of inclusions leads me to think that it might slag, the presence of coincidental fractures leads me to think that it might be something else. While slag (glass) will have coincidental fractures, weathering tends to very quickly remove these. Further, the slag and inclusions tend to weather that the same rate thus giving the stones a smooth appearance.
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