Rocks & Minerals B/C ID/Question Marathon

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

Postby XJcwolfyX » April 7th, 2014, 5:07 pm

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

Postby solakmagic » April 10th, 2014, 8:31 am

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

Postby darkdeserthighway » April 10th, 2014, 1:56 pm

Not competing anymore this year but here:
Two minerals
Image
2015 States- Invasives 10th, Fossils 12th
2014 States- Rocks and Minerals 3rd
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2012 States- Rocks and Minerals 10th

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

Postby asthedeer » April 10th, 2014, 3:30 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 » April 10th, 2014, 3:33 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 » April 10th, 2014, 5:01 pm

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

Postby asthedeer » April 11th, 2014, 5:47 pm

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 » April 12th, 2014, 6:36 am

andesite?

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

Postby bwspy » April 12th, 2014, 6:37 am

Oh no never mind.

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

Postby taylorivy » April 12th, 2014, 1:37 pm

not really sure how this works
chalcopyrite?

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

Postby asthedeer » April 12th, 2014, 4:11 pm

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

Postby taylorivy » April 12th, 2014, 7:30 pm

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 » April 16th, 2014, 5:49 am

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 » April 16th, 2014, 6:52 am

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 » April 16th, 2014, 12:37 pm

Correct!
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