bosis73 Posted January 25, 2016 Share Posted January 25, 2016 Quote Link to comment Share on other sites More sharing options...
4meter Posted January 25, 2016 Share Posted January 25, 2016 (edited) Chalcedony (the dark green blebs) - a type of quartz know as cryptocrystalline quartz. I'm not sure what the material is the quartz is on; maybe limestone? Place some warm vinager on it and see if it fizzes. Edited January 25, 2016 by 4meter Quote Link to comment Share on other sites More sharing options...
adam Posted January 26, 2016 Share Posted January 26, 2016 Just looks like mine slag to me Quote Link to comment Share on other sites More sharing options...
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