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clay mineral

noun

  1. any of a group of hydrous aluminum silicate minerals, as kaolinite, illite, and montmorillonite, that constitute the major portion of most clays.


clay mineral

noun

  1. any of a group of minerals consisting of hydrated aluminium silicates: the major constituents of clays


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Word History and Origins

Origin of clay mineral1

First recorded in 1945–50

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Example Sentences

It is generally imbedded in lumps in the red clay mineral soil.

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