Rocks and Minerals Question Marathon

cngu23
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Re: Rocks and Minerals Question Marathon

Post by cngu23 »

quizbowl wrote:
tornado guy wrote:Mica, chemical formula is X2Y4–6Z8O20(OH,F)4 and basically it makes anything shine (toothpaste, paint, lip stick etc..)
NOPE (chuck testa)
Calcite Chemical formula CaCO3
part of marine animal shells

Someone else can upload another photo if I'm right
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quizbowl
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Re: Rocks and Minerals Question Marathon

Post by quizbowl »

cngu23 wrote:
quizbowl wrote:
tornado guy wrote:Mica, chemical formula is X2Y4–6Z8O20(OH,F)4 and basically it makes anything shine (toothpaste, paint, lip stick etc..)
NOPE (chuck testa)
Calcite Chemical formula CaCO3
part of marine animal shells

Someone else can upload another photo if I'm right
Not too shabby.
I guess for uses, I should have specified them as a commercial ones (construction, acid neutralization, building monuments, even a dietary supplement given to farm animals) but that's fine.
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Image

Identify this specimen and what it is mainly composed of.
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quizbowl
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Re: Rocks and Minerals Question Marathon

Post by quizbowl » 

Basalt
plagioclase, pyroxene and some olivine
2010: 5th in NYS
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<quizbowl> ey kid ya want some shortbread
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tornado guy
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

quizbowl wrote:
Basalt
plagioclase, pyroxene and some olivine
You have the pagioclase part half correct. But no, it's not basalt.
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Re: Rocks and Minerals Question Marathon

Post by Wadhk » 

Gabbro
Plagioclase, Pyroxene, Amphibole, Olivine
2014 Events: Entomology, Materials Science, Rocks and Minerals, Scrambler
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tornado guy
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Wadhk wrote:
Gabbro
Plagioclase, Pyroxene, Amphibole, Olivine
Nope, sorry.
Hint: Igneous rock
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Re: Rocks and Minerals Question Marathon

Post by quizbowl » 

andesite?
2010: 5th in NYS
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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 Wadhk » 

Andesite
Plagioclase, pyroxene
EDIT: beaten by quiz... (ignore this) :?
2014 Events: Entomology, Materials Science, Rocks and Minerals, Scrambler
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tornado guy
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Re: Rocks and Minerals Question Marathon

Post by tornado guy »

Hoorah, you both are right! Good job Wadhk for answering the whole question correct! I hand the baton to you.
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