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Posted: **December 1st, 2012, 3:46 pm**

answer (Click to Show Hidden Text)

pegmatite? gneiss?

Posted: **December 1st, 2012, 4:34 pm**

thsom wrote:A quartz crystal geode
A chert sedimentary rock

the first one is gneiss and the second on is pegmatite

Posted: **December 1st, 2012, 5:30 pm**

Um... I think it's (Click to Show Hidden Text)

Mica Schist

Posted: **December 1st, 2012, 5:56 pm**

hotchocolate123 wrote:
Um... I think it's (Click to Show Hidden Text)
Mica Schist

You are correct

Posted: **December 1st, 2012, 7:34 pm**

Identify: (Click to Show Hidden Text)

[img]http://www.greatrough.com/images/blue_chalcedony8.jpg[/img]

Posted: **December 1st, 2012, 8:09 pm**

Hark! (Click to Show Hidden Text)

A wild chalcedony appeared! Quizbowl used identify!

Posted: **December 1st, 2012, 8:47 pm**

Correct!

Your turn!

Posted: **December 1st, 2012, 8:53 pm**

Posted: **December 1st, 2012, 9:56 pm**

Answer (Click to Show Hidden Text)

Rhyolite- I would say it's a bit darker than usual...but theres not much grains on it

Posted: **December 2nd, 2012, 5:21 pm**

melissay63 wrote:
Answer (Click to Show Hidden Text)
Rhyolite- I would say it's a bit darker than usual...but theres not much grains on it

+1

Rocks and Minerals Question Marathon