dark mineral

noun Geology.

any rock-forming mineral that has a specific gravity greater than 2.8 and that is generally dark in color.

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Nearby words

dark horse, dark internet, dark lantern, dark matter, dark meat, dark mineral, dark money, dark nebula, dark of the moon, dark reaction, dark slide

Compare light mineral.

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