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Lutite (Latin lutum "mud") is a sedimentary rock with an average grain size of less than 2 µm. A lutite corresponds to rocks that can be assigned to clay stones . The term lutite is mainly used in the classification of limestones , where the grain size-dependent term mudstone does not make sense because it primarily only refers to siliciclastic rocks.

See also


  • H. Füchtbauer: Sediments and sedimentary rocks . 4th revised edition. Schweizerbart'sche Verlagbuchhandlung, Stuttgart 1988, ISBN 3-510-65138-3 .