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clay mineral
noun
- 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
- 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.
From Project Gutenberg
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