Klondisco Posted March 28, 2012 Share Posted March 28, 2012 (edited) Hello, I have a mysterious rock I found a long time ago in my yard. I found it in my yard a couple years ago. The rock looks like nothing in the area, and I just want to know what it is. My first guess was obsidian, but my Earth Science teacher said he had no idea, and that it wasn't obsidian. It looks like it is starting to rust on the top. There are white specks on it, and it looks melted. Here are some pictures of it. I can post more if it would help. Thanks in advance! EDIT: Found in Wisconsin Edited March 28, 2012 by Klondisco Link to comment Share on other sites More sharing options...
doG Posted March 28, 2012 Share Posted March 28, 2012 It could be a meteorite.... Link to comment Share on other sites More sharing options...
Ophiolite Posted March 28, 2012 Share Posted March 28, 2012 That also struck me as a possibility. However are there any foundries or steel mills in your vicinity? Or any form of heavy industry that might have involved casting? It could be a form of slag. Link to comment Share on other sites More sharing options...
John Cuthber Posted March 28, 2012 Share Posted March 28, 2012 It looks a lot like the "Glassy Furnace Slag" picture here http://www.fallingcreekironworks.org/17century.html Link to comment Share on other sites More sharing options...
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