Rocks and Minerals Question Marathon

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Re: Rocks and Minerals Question Marathon

Post by tornado guy » 

[img]http://www.mii.org/Minerals/Minpics1/FeldsparMicrocline.jpg[/img]
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Re: Rocks and Minerals Question Marathon

Post by Wadhk » 

Feldspar? K Al Si3 O8
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Wadhk wrote:
Feldspar? K Al Si3 O8
Correct.
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Re: Rocks and Minerals Question Marathon

Post by Wadhk »

Someone else can post the next question.
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Identify
Image
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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover »

Anthracite?
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

I can verify that as anthracite. Your go, PGP.
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Sorry, I forgot that I posted the last question! Anyhow; you're correct, it's anthracite.
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Re: Rocks and Minerals Question Marathon

Post by PacificGoldenPlover » 

[img]http://mineralminers.com/html/lepm154.jpg[/img]
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Re: Rocks and Minerals Question Marathon

Post by yogoperson »

PacificGoldenPlover wrote:
[img]http://mineralminers.com/html/lepm154.jpg[/img]
I Think Lepidolite?

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Last edited by yogoperson on November 17th, 2011, 10:22 pm, edited 2 times in total.
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