Rocks and Minerals Question Marathon

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PacificGoldenPlover
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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover »

Bauxite/Aluminum?
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Re: Rocks and Minerals Question Marathon

Post by Wadhk »

Yup, your turn.
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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover » 

[img]http://www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousCompositions/7Rhyolite/Rhyolite.jpg[/img]
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Re: Rocks and Minerals Question Marathon

Post by Katherine »

PacificGoldenPlover wrote:
[img]http://www.pitt.edu/~cejones/GeoImages/2IgneousRocks/IgneousCompositions/7Rhyolite/Rhyolite.jpg[/img]
Rhyolite, Felsic.
Just in case I get this right, someone else can take my question.
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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover »

Correct.
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Re: Rocks and Minerals Question Marathon

Post by Katherine »

Someone else can take this question
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Re: Rocks and Minerals Question Marathon

Post by Wadhk »

Image

ID the specimen.
What is the terminology that describes how light is split as it passes through this specimen?
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Re: Rocks and Minerals Question Marathon

Post by iYOA » 

calcite, birefringence
West Windsor-Plainsboro High School South
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Re: Rocks and Minerals Question Marathon

Post by Wadhk »

That's correct!
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Re: Rocks and Minerals Question Marathon

Post by iYOA » 

[img]http://www.galleries.com/minerals/silicate/albite/albite.jpg[/img]

What is it? 
What does its name mean?
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