The mineral crystals in obsidian are too small to see without a microscope. This is because it _____.
formed below the crust
cooled very slowly
cooled very quickly
formed at high temperatures
The mineral crystals in obsidian are too small to see without a microscope. This is because it cooled very quickly.
Question
Asked 9/5/2012 12:25:40 PM
Updated 3/15/2015 11:56:15 AM
0 Answers/Comments
This answer has been confirmed as correct and helpful.
Confirmed by
Andrew. [3/15/2015 11:56:15 AM]
Rating
There are no new answers.