Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of argillite is as below...

Slate :: Slate (v. t.) An argillaceous rock which readily splits into thin plates; argillite; argillaceous schist.

Argillite :: Argillite (n.) Argillaceous schist or slate; clay slate. Its colors is bluish or blackish gray, sometimes greenish gray, brownish red, etc..

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