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argillite |
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argillite [′är·jə‚līt]
(petrology) A compact rock formed from siltstone, shale, or claystone but intermediate in degree of induration and structure between them and slate; argillite is more indurated than mudstone but lacks the fissility of shale. argillite A rock containing chiefly clay materials; derived from claystone, siltstone, or shale; used locally as building stone, although rarely produced commercially. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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