Rocks and Minerals Question Marathon

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quizbowl
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Re: Rocks and Minerals Question Marathon

Postby quizbowl » September 1st, 2011, 3:07 pm

Good job! On a side note, I seem to often mix up Chalcopyrite with Bornite :shock: anyone have any visual aids between them? (It's still your turn, XX)
2010: 5th in NYS
2011: 4th in NYS
2012: 3rd in NYS
<quizbowl> ey kid ya want some shortbread
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Re: Rocks and Minerals Question Marathon

Postby XXGeneration » September 1st, 2011, 3:11 pm

Good job! On a side note, I seem to often mix up Chalcopyrite with Bornite :shock: anyone have any visual aids between them? (It's still your turn, XX)
I like to think that Chalcopyrite has more of a yellowish tinge to it while Bornite is mainly just a darker color :P

Question 5:
Image

Identify the mineral and state the crystal system to which it belongs.

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mingtian
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Re: Rocks and Minerals Question Marathon

Postby mingtian » September 1st, 2011, 3:13 pm

Quiz and xx, are you using your binder or is this pure memory?

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Re: Rocks and Minerals Question Marathon

Postby XXGeneration » September 1st, 2011, 5:10 pm

The marble and bornite ID was mostly from memory; the bornite formula and the magma question were both from my binder.

Mainly I want to be able to ID and recall main facts such as nicknames from memory. The rest can be from my binder.

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Re: Rocks and Minerals Question Marathon

Postby iYOA » September 3rd, 2011, 3:00 am

The pinkish mineral is feldspar and it can either be monoclinic or triclinic(but i think orthoclase feldspar is monoclinic).
EDIT:  The other mineral is Biotite and it is also monoclinic. lol at first i thought it was slate
I might not have internet access for 24hrs after 12pm so if anyone is feeling impatient they may post a question in my place after my answer is verified.
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XXGeneration
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Re: Rocks and Minerals Question Marathon

Postby XXGeneration » September 3rd, 2011, 8:31 am

The pinkish mineral is feldspar and it can either be monoclinic or triclinic(but i think orthoclase feldspar is monoclinic).
EDIT:  The other mineral is Biotite and it is also monoclinic. lol at first i thought it was slate
I might not have internet access for 24hrs after 12pm so if anyone is feeling impatient they may post a question in my place after my answer is verified.
I was not asking about the pinkish mineral, so I'm not sure if that's correct; however, your identification of the black mineral is correct! :D

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Re: Rocks and Minerals Question Marathon

Postby iYOA » September 5th, 2011, 3:48 am

Here is the next question:
[img]http://tiny.cc/1o6jl[/img]
[img]http://library.thinkquest.org/05aug/00461/images/lepidolite.jpg[/img]

a) Identify it.
b) Which mineral group does it belong to? 
c) It is the principle ore mineral for which alkali metal?
West Windsor-Plainsboro High School South

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quizbowl
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Re: Rocks and Minerals Question Marathon

Postby quizbowl » September 5th, 2011, 5:26 am

a) Identify it. --> Lepidolite?
b) Which mineral group does it belong to? The mica group (which makes it a phyllosilicate)
c) It is the principle ore mineral for which alkali metal? Lithium
2010: 5th in NYS
2011: 4th in NYS
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

Postby iYOA » September 5th, 2011, 7:54 am

a and b are correct. however c is actually rubidium.
West Windsor-Plainsboro High School South

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quizbowl
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Re: Rocks and Minerals Question Marathon

Postby quizbowl » September 5th, 2011, 8:26 am

a and b are correct. however c is actually rubidium.
Oh, didn't see principle XD
Image
2010: 5th in NYS
2011: 4th in NYS
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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