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Rock
Apr 25, 2008 13:06:31 GMT -5
Post by doctibbles on Apr 25, 2008 13:06:31 GMT -5
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Rock
Apr 25, 2008 13:24:51 GMT -5
Post by amythestguy on Apr 25, 2008 13:24:51 GMT -5
It most definetly is an igneous rock! Maybe a large chunk of obsedion( volcanic glass)? Where was the pic taken?
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Rock
Apr 25, 2008 13:31:57 GMT -5
Post by doctibbles on Apr 25, 2008 13:31:57 GMT -5
The rock is in southern Alberta
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Rock
Apr 25, 2008 22:38:14 GMT -5
Post by 4cornersrocks on Apr 25, 2008 22:38:14 GMT -5
From the photo I would also guess obsidian. Is it translucent when backlit, it might be a little translucent if not almost clear, a rootbeer color, but keep in mind that it can also be opaque, this is not a deciding factor. Lava, perlite, and other volcanic stuff might be present nearby as well. Obsidian is a 5-5.5 on the mohs scale, it has conchoidal fracture (like when glass breaks unevenly)
It's always hard to tell from photos though, could be anything.
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Rock
May 2, 2008 15:03:28 GMT -5
Post by doctibbles on May 2, 2008 15:03:28 GMT -5
Still do not know what this rock is. I have had replies from other sites and so far people think it is either Obsidian, Basalt, Gabbro etc. So I am still in the dark on this one.
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Rock
May 3, 2008 17:33:36 GMT -5
Post by arappaho on May 3, 2008 17:33:36 GMT -5
Try Peridotite on. It is in the same class of igneous rocks as the other
suggestions, but it might fit.
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Rock
May 16, 2008 14:33:07 GMT -5
Post by scott on May 16, 2008 14:33:07 GMT -5
Getting a rock identified on forums through a picture can be very helpful especially if someone here is familiar with the locality and the look of the specimen. However, being able to see the specimen in person is 100 times better than any photo. Bring the specimen to your local rock club or to a magma trip and you'll have a much better chance of getting it identified.
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Rock
May 16, 2008 15:04:51 GMT -5
Post by doctibbles on May 16, 2008 15:04:51 GMT -5
I would love to bring the rock home but it weighs about 100 lbs. and I would have to trek it about 6 miles over very rough terrain and being in my late 60s I doubt that I will be doing that. It is very unique in that there are no other rocks like it in the area at all and I have yet to see anything on the internet that resembles it
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Rock
May 16, 2008 15:29:57 GMT -5
Post by amythestguy on May 16, 2008 15:29:57 GMT -5
Take the old cold chisel and sledge and break a nice chunck off.
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