Rocks and Minerals Question Marathon

[quizbowl]

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

[tornado guy]

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

Oh You're right.. Okay, your turn

[Wadhk]

I'll let quiz post the next question (since she(?) did post before me).

[quizbowl]

I'll let quiz post the next question (since HE did post before me).

:/
Be wary, this is not on the list:

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?

[rfscoach]

I'll let quiz post the next question (since HE did post before me).

:/
Be wary, this is not on the list:

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.

[XXGeneration]

Random Guess.. (Click to Show Hidden Text)

It is a mineral because it looks rather uniform in "clast" size. I would say it's either trigonal or hexagonal.

[quizbowl]

Random Guess.. (Click to Show Hidden Text)

It is a mineral because it looks rather uniform in "clast" size. I would say it's either trigonal or hexagonal.

Nopers.

[tornado guy]

Another wild guess (Click to Show Hidden Text)

Is it a sedimentary rock?

[iYOA]

guess (Click to Show Hidden Text)

I think its igneous because it looks like at least two minerals glued together sort of like granite(except that would be 3)

[quizbowl]

guess (Click to Show Hidden Text)

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).