O man, I just came across the funniest geology rocks sound! These guys put the ROCK! in geology hee hee.
http://www.youtube.com/watch?v=ch5i3DxcQPQ
If rockin ain't ur thing then maybe you should try some geology rap:
http://www.youtube.com/watch?v=SVkn_ApZHY4&feature=related
Rock of the week
Diorite – An intermediate intrusive igneous rock and usually contains; feldspar, hornblende, biotite, pyroxene and sometimes quartz, olivine and other accessory minerals. Diorite principly occurs where there is partial-melting of mafic rock above a subduction zone. Commonly diorite is found in a volcanic arc setting and in mountain building areas such as the Andes. Diorite is a relatively rare rock and is very hard.
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