Gabbro
Revision as of 12:47, 9 April 2007 by Jarogers2001 (talk | contribs) (New page: {{Stub}} A dark, coarse-grained intrusive igneous rock. Gabbro is made of calcium-rich plagioclase, with amphibole and/or pyroxene, and is chemically equivalent to basalt. [[Category:Sele...)
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A dark, coarse-grained intrusive igneous rock. Gabbro is made of calcium-rich plagioclase, with amphibole and/or pyroxene, and is chemically equivalent to basalt.
