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A '''crystal''' is a substance in which the constituent atoms are arranged in a consistent, repetitive, and therefore orderly pattern. Crystals are extremely common, forming the basis for many [[rock|rocks]] and [[mineral|minerals]], and playing a large part in the [[biology|biological processes]] of many organisms.
 
A '''crystal''' is a substance in which the constituent atoms are arranged in a consistent, repetitive, and therefore orderly pattern. Crystals are extremely common, forming the basis for many [[rock|rocks]] and [[mineral|minerals]], and playing a large part in the [[biology|biological processes]] of many organisms.
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[[Category:Geology]]
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[[Category:Crystallography]]
 
[[Category:Biology]]
 
[[Category:Biology]]
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