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| ol·i·go·clase [ ólligō klàyss, ə líggə klàyss ] |
noun |
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| Definition: |
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feldspar mineral: a white, bluish, or reddish yellow feldspar mineral of the plagioclase series. Source: igneous and metamorphic rocks.
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| [Mid-19th century. <oligo- + Greek klasis "breaking" < klan "break" (see clastic), from its imperfect cleavage] |
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