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Science.Geology.
mineral Mineralogy.

Mineralogy
Available Titles
How Atoms are Arranged in MineralsHow Atoms are Arranged in Minerals To imagine what it is like inside a mineral crystal, you can think of "rooms" formed by the crystal's atoms.
 
AgateAgate forms when silica in solution seeps into a cavity in lava and hardens in successive layers. Chemically it consists of silicon and oxygen, SiO2.
 
CorundumCorundum is a transparent to translucent mineral which is found in several colored -- white, blue, red, yellow, green, brown, purple, and pink -- as well as in colorless forms. Chemically it is alumina, or aluminum oxide, Al2O2.
 
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This page was last updated on 02/22/2010.