Any Professionals Ideas?

[Joseph 11]

What is this - many different pieces?

 

 

 

[Hardtimehermit]

That is nice looking chert, full of color some even look like opal, that's what i see.

[jasong]

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.

[Flydog]

Looks like Obsidian to me

 

[Geologyhound]

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.