Re: Rocks and Minerals Question Marathon
Posted: November 27th, 2011, 8:05 pm
Yup.Your turn.
How is this formed?
Uses?
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Rocks and Minerals Question Marathon
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Re: Rocks and Minerals Question Marathon
Posted: November 30th, 2011, 7:53 pm
How is this formed?
Uses?
Re: Rocks and Minerals Question Marathon
Posted: December 1st, 2011, 5:00 am
I don't think it is amethyst possibly scoria 
it is formed by low pressure on magma which lets gasses escape and create those holes
it is used for grill fuel and high temp.
it is formed by low pressure on magma which lets gasses escape and create those holes
it is used for grill fuel and high temp.
Re: Rocks and Minerals Question Marathon
Posted: December 1st, 2011, 1:34 pm
Yes!ragi wrote:I don't think it is amethyst possibly scoria
it is formed by low pressure on magma which lets gasses escape and create those holes
it is used for grill fuel and high temp.
Re: Rocks and Minerals Question Marathon
Posted: December 3rd, 2011, 3:26 pm
[URL=http://imgur.com/qVpDI][img]http://i.imgur.com/qVpDI.jpg[/img][/URL
Re: Rocks and Minerals Question Marathon
Posted: December 4th, 2011, 11:04 am
Slate
Re: Rocks and Minerals Question Marathon
Posted: December 4th, 2011, 4:25 pm
yep
Re: Rocks and Minerals Question Marathon
Posted: December 4th, 2011, 9:35 pm
Re: Rocks and Minerals Question Marathon
Posted: December 5th, 2011, 3:22 pm
gneiss? (a random stab)
EDIT: maybe granite instead...
EDIT: maybe granite instead...
Re: Rocks and Minerals Question Marathon
Posted: December 5th, 2011, 5:27 pm
Not quite, try again.