Black glossy bubbley glass?

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Offline Titanscape

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Black glossy bubbley glass?
« on: 30/12/2004 15:44:58 »
I found a black rock which fractured brown. It is glassy and has bubbles and sides which show cleavage. I think it is Basalt. It's trivia, but what do you fellows think?

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Offline pink_person

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Re: Black glossy bubbley glass?
« Reply #1 on: 30/12/2004 16:52:03 »
Where do you live, what are you surroundings, an ocean, a stream, a mountain, volcano?  Or did you find this near a bar joint?

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Offline neilep

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Re: Black glossy bubbley glass?
« Reply #2 on: 30/12/2004 19:57:01 »
quote:
Originally posted by Titanscape

I found a black rock which fractured brown. It is glassy and has bubbles and sides which show cleavage. I think it is Basalt. It's trivia, but what do you fellows think?

Titanscape



Bren, can you get a piccy of it on the site ?...I'm sure Exodus can tell us what it is.......could it just be one big happy gloop of caramel ?[:)]

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Offline Titanscape

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Re: Black glossy bubbley glass?
« Reply #3 on: 31/12/2004 15:24:36 »
I'll take a picture of it now. Here it is 2am January 1 2005. Happy new year.

I found it on an old inland road near an Australian war memorial. An old fashioned rocky Aussie road. Next to the big Hume Highway. This rock may have fallen off a truck 50 years ago. It isn't tar, it's too hard. Near is there was shale or coal and other minerals, but none alike it.

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« Last Edit: 31/12/2004 15:25:13 by Titanscape »
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Offline chris

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Re: Black glossy bubbley glass?
« Reply #4 on: 07/01/2005 10:28:45 »
Sounds like obsidian - volcanic glass.

I look forward to seeing the photo.

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Offline Exodus

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Re: Black glossy bubbley glass?
« Reply #5 on: 09/01/2005 18:29:06 »
sounds very much like Obsidian (volcanic glass to me) I have some wonderful flow banded obsidian from Mount Teide in Tenerife! Great stuff!