sedimentary rock clastic sedimentary rock 2013-10-12T14:51:19Z Clastic sedimentary rocks are sedimentary rocks that are composed of silicate minerals and rock fragments that were transported by moving fluids. Clastic rocks are composed largely of quartz, feldspar, rock (lithic) fragments, clay minerals, and mica; numerous other minerals may be present as accessories and may be important locally. ENVO ENVO:01000271 ORCID:0000-0002-4366-3088