alkali rock

noun Mineralogy.

any igneous rock with a marked preponderance of alkali and a low percentage of silica.

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Nearby words

alkali flat, alkali grass, alkali metal, alkali metaprotein, alkali reserve, alkali rock, alkali soil, alkali-loving, alkalic, alkalify, alkalimeter

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019