Bible Dictionaries
Argillite

Webster's Dictionary

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

Bibliography Information
Webster, Noah. Entry for 'Argillite'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/argillite.html. 1828.