oolith

  1. Noun.  (geology) A spherical granule of which oolite is composed, formed by concentric accretion of thin layers of a mineral around a core. Calcium carbonate (limestone) is the most common mineral that forms '''ooliths''', but they may also form from other minerals such as dolomite and silica.
  2. Noun.  (rare) Oolite.

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This entry was last updated on RefTopia from its source on 3/20/2012.