English dictionary
argillite
/'/A/r/dZ//@/,l/aI/t/
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages
Source: WordNet 3.0
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Argillaceous schist or slate; clay slate. Its colors is bluish or blackish gray, sometimes greenish gray, brownish red, etc.
Source: webster1913