ARGILLITE

argillite

(noun) a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages

Source: WordNet® 3.1

Noun

argillite (plural argillites)

(geology) A fine-grained sedimentary rock, intermediate between shale and slate, sometimes used as a building material

Source: Wiktionary

Ar"gil*lite, n. Etym: [Gr. -lite.] (Min.)

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

– Ar`gil*lit"ic, a.

Source: Webster’s Unabridged Dictionary 1913 Edition

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