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Re: Rocks and Minerals Question Marathon

Posted: October 29th, 2011, 8:54 pm
by quizbowl
tornado guy wrote:Hoorah, you both are right! Good job Wadhk for answering the whole question correct! I hand the baton to you.
PSSH I already had the other part of the question :roll:

Re: Rocks and Minerals Question Marathon

Posted: October 29th, 2011, 8:55 pm
by tornado guy
quizbowl wrote:
tornado guy wrote:Hoorah, you both are right! Good job Wadhk for answering the whole question correct! I hand the baton to you.
PSSH I already had the other part of the question :roll:
Oh :P You're right.. Okay, your turn

Re: Rocks and Minerals Question Marathon

Posted: October 29th, 2011, 8:56 pm
by Wadhk
I'll let quiz post the next question (since she(?) did post before me).

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 7:21 am
by quizbowl
Wadhk wrote:I'll let quiz post the next question (since HE did post before me).
:/
Be wary, this is not on the list:
Image
QUE GRANDE lo siento
1) Is this a rock or mineral? If mineral, what type of crystal structure does it have? If rock, is it igneous, sedimentary, or metamorphic?
2) What made you choose your answer above?

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 7:55 am
by rfscoach
quizbowl wrote:
Wadhk wrote:I'll let quiz post the next question (since HE did post before me).
:/
Be wary, this is not on the list:
Image
QUE GRANDE lo siento
1) Is this a rock or mineral? If mineral, what type of crystal structure does it have? If rock, is it igneous, sedimentary, or metamorphic?
2) What made you choose your answer above?
I know, but I'm gong to let a student answer.

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 8:19 am
by XXGeneration
It is a mineral because it looks rather uniform in "clast" size. I would say it's either trigonal or hexagonal.

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 8:23 am
by quizbowl
XXGeneration wrote:
It is a mineral because it looks rather uniform in "clast" size. I would say it's either trigonal or hexagonal.
Nopers.

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 9:26 am
by tornado guy
Is it a sedimentary rock?

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 9:51 am
by iYOA
I think its igneous because it looks like at least two minerals glued together sort of like granite(except that would be 3)

Re: Rocks and Minerals Question Marathon

Posted: October 30th, 2011, 12:50 pm
by quizbowl
iYOA wrote:
I think its igneous because it looks like at least two minerals glued together sort of like granite(except that would be 3)
Yes! It is dunite, a member of the peridotite family. It is igneous (I figured it out by seeing so much olivine in it, and since olivine is really only present in the early members of the Bowen's RXN series, I assumed it was igneous).