Claystone definitions

Claystone

1) Argillite 2) Rock 3) Stone
Found on https://www.crosswordclues.com/clue/claystone

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claystone

hardened clay. Some geologists further restrict the term to a sedimentary rock that is composed primarily of clay-sized particles (less than 1256 ... [3 related articles]
Found on http://www.britannica.com/eb/a-z/c/94

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claystone

[n] - fine-grained rock consisting of compacted clay particles
Found on http://www.webdictionary.co.uk/definition.php?query=claystone

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claystone

noun fine-grained rock consisting of compacted clay particles
Found on https://www.encyclo.co.uk/local/20974

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