Brian Hadaway
Andesite-A
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Andesite is Igneous

It is Extrusive

It's Fine-Grained
geology.com/rocks/andesite.shtml

It's usually Grey in color.
www.answers.com/topic/andesite

It occurs as surface deposits, dikes, and small plugs.
geology.csupomona.edu/alert/igneous/andesite.htm

Minerals found in Andesite are plagioclase, pyrxene, and/or hornblende, magnetite, zircon, apatite, ilmenite, biotite,and garnet.
en.wikipedia.org/wiki/Andesite

It forms mostly in lava flows.
www.probertencyclopaedia.com/cgi-bin/res.pl?keyword=Andesite&offset=0

Some uses for Andesite are construction, tiles, bricks, and stones.
wiki.answers.com/Q/How_can_you_use_andesite

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