a sedimentary rock differing from shale in being bound by silica and from slate in having no slate cleavages
argillite详细解释
ar.gil.lite n.（名词）A metamorphic rock, intermediate between shale and slate, that does not possess true slaty cleavage.厚层泥岩：一种变质岩，在页岩与板岩之间，不具备真正的板块解理 来源：Latin argilla [argil] * see argil 拉丁语 argilla [陶土] *参见 argil-ite-ite
