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Any Professionals Ideas?

Joseph 11

By Joseph 11
in Rocks, Minerals, Gems & Geology

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jasong Platinum Contributor

jasong

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Posted

Looks like slag and/or smelting glass to me. Maybe a piece of clinker brick in there too. IIRC, the green comes from fluxes that get oversaturated with Fe, reds were often Pb. Unevaporated zinc films gave opalescence. It's been a year since I was playing around with smelting, can't remember exactly. 

One photo (the one that appears copied from a webpage) is the only real looking rock to me, and it's some kind of sage green quartzite or grainy chert.

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Geologyhound Copper Contributor

Geologyhound

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Were these all found in the same location?

I concur most of them look like slag or clinker.  The green banded one without lots of air bubbles looks like some jasper I have in the back shed.

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