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lab test 2 igneous
igneous rocks
8
Geology
10/26/2009
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Term
 Definition

andesite

... porphyritic and extrusive
Term
 Definition
basalt
Term
 Definition

diorite

(more dark than light)
Term
 Definition
gabbro
Term
 Definition

obsidian

 

(glossy)
Term
 Definition

pumice

(frothy)
Term
 Definition
rhyolite
Term
 Definition

scoria

(vesicular)