Rocks and Minerals Question Marathon

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quizbowl
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

Nope! This is quite tricky..
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.
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hexagonaria
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Re: Rocks and Minerals Question Marathon

Post by hexagonaria » 

aragonite? or calcite?
DFTBA
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

That picture is waaaay too hard, so here's another specimen in its natural habitat.
Image
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.
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Re: Rocks and Minerals Question Marathon

Post by pinkyfinger » 

Topaz?
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quizbowl
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

Yep! It was quite an odd pseudomorph..
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.
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pinkyfinger
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Re: Rocks and Minerals Question Marathon

Post by pinkyfinger »

Image
ID the rock.
What is the main mineral in this rock? What is the chemical formula for this mineral?
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quizbowl
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Re: Rocks and Minerals Question Marathon

Post by quizbowl » 

Coquina is calcium carbonate, right? CaCO3
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.
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Re: Rocks and Minerals Question Marathon

Post by pinkyfinger »

quizbowl wrote:
Coquina is calcium carbonate, right? CaCO3
yep, your turn
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

Image
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
<EASTstroudsburg13> I don't know why, but I just can't bring myself to delete this post.
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hexagonaria
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Re: Rocks and Minerals Question Marathon

Post by hexagonaria » 

corundum
DFTBA
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