Igneous Rocks
Intrusive--Magma
Granite
Topic
Extrusive--Lava
Obsidian
Topic
Topic
Pumice
Topic
Topic
Basalt
Topic
Topic
Topic
Porphyritic
Topic
Topic
Topic
cools slowly-forms crystals
Cools quickly-fewer crystals
coarse grained
Glassy
Fine grained
Fine and coarse grained
Igneous Rocks
Added: 2010-02-15 05:12:59
From: (Joined 2010-02-14 00:15:11)
151 views |10 downloads
Igneous Rocks
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