Rocks & Minerals B/C ID/Question Marathon

Test your knowledge of various Science Olympiad events
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XJcwolfyX
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby XJcwolfyX » Tue Apr 08, 2014 12:07 am

Yep, you're right, my bad...
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby solakmagic » Thu Apr 10, 2014 3:31 pm

Revive?
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby darkdeserthighway » Thu Apr 10, 2014 8:56 pm

Not competing anymore this year but here:
Two minerals
Image
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby asthedeer » Thu Apr 10, 2014 10:30 pm

darkdeserthighway wrote:Not competing anymore this year but here:
Two minerals
Image

My guess was Dolomite Crystals and Boronite, but when I'm quoting you (right now), the file name says that it is Chalcopyrite.
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby asthedeer » Thu Apr 10, 2014 10:33 pm

Next!
http://upload.wikimedia.org/wikipedia/commons/c/c9/Almandin.jpg
Ignore the link, it may or may not be right.
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby sofossils » Fri Apr 11, 2014 12:01 am

Answer
Garnet Schist
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby asthedeer » Sat Apr 12, 2014 12:47 am

No, not quite... Turns out the file name was right! It was almandine garnet.
Image
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby bwspy » Sat Apr 12, 2014 1:36 pm

andesite?

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Re: Rocks & Minerals B/C ID/Question Marathon

Postby bwspy » Sat Apr 12, 2014 1:37 pm

Oh no never mind.

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Re: Rocks & Minerals B/C ID/Question Marathon

Postby taylorivy » Sat Apr 12, 2014 8:37 pm

not really sure how this works
chalcopyrite?

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Re: Rocks & Minerals B/C ID/Question Marathon

Postby asthedeer » Sat Apr 12, 2014 11:11 pm

yes you're right!!!!!
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby taylorivy » Sun Apr 13, 2014 2:30 am

Not positive
Augite or a less distinct mica schist I think? I suppose if I pick one it's augite

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Re: Rocks & Minerals B/C ID/Question Marathon

Postby sofossils » Wed Apr 16, 2014 12:49 pm

For the sake of reviving............

Question
What is Bowen's Reaction Series? What is the continuous branch? What is the discontinuous branch?
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Re: Rocks & Minerals B/C ID/Question Marathon

Postby taylorivy » Wed Apr 16, 2014 1:52 pm

sofossils wrote:For the sake of reviving............

Question
What is Bowen's Reaction Series? What is the continuous branch? What is the discontinuous branch?


I believe that
Bowen's Reaction Series dictates which minerals form from magma at certain temperatures, and thus, what temperature those minerals are most stable at. The continuous branch shows the shift along the spectrum of sodium-rich plagioclase at high temperatures to calcium-rich plagioclase at lower temperatures. The discontinuous branch is made up specific minerals that are present as magma reaches certain temperatures. As magma continues cooling, a mineral reacts with the remaining magma to form the next in the series. The discontinuous branch is made up of olivine (high temps), pyroxene, amphibole, biotite, orthoclase, muscovite, and quartz (lower temps).

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Re: Rocks & Minerals B/C ID/Question Marathon

Postby sofossils » Wed Apr 16, 2014 7:37 pm

Correct!
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