What is this slag glass or Volcanic glass

theakkid

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What is this slag glass or Volcanic glass

Submitted by theakkid on Sun, 02/05/2012 - 19:56.

Someone gave this to my wife about 10 years ago it spent the last 5 years outside in a weed bed all i can tell you is it about 12" x 8" x 6" and it weights 17lbs. there is a lot of air bubbles in it you can see throught it like in the last pic you can see my hand throught it and in one part of it i think i can see a blade of grass in it . it also has some sharpe edges. My wife said that the person that gave it to her stated it came from Arkansas hot springs area he found it on the ground . what is it and my last question is what is it worth

John

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Not sure what 'AR' is. but

Sun, 02/05/2012 - 22:40

Not sure what 'AR' is. but this looks like a paler version of Bristol Glass. Still produced in Bristol today. It has added cobalt I believe.

It is worth whatever you can get anyone to pay for it. There are places around Bristol & Somerset where lumps like this are dumped.

John

“Civilisation exists by geological consent, subject to change without notice.” - Will Durant

John

“Civilisation exists by geological consent, subject to change without notice.” - Will Durant

Gus Horsley

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I'd say it's man-made as

Mon, 02/06/2012 - 07:48

I'd say it's man-made as well. It doesn't appear to be the sort of substance that you'd find in the vicinity of hot springs and I'm fairly certain it's not a variety of obsidian, but you never know.

GeologyRocks