Countable: used in archaeology and sedimentology for stone artifacts or rock fragments.
Definitions
A stone artifact, especially a prehistoric tool made or modified by humans. The archaeologist catalogued each lithic found during the excavation.
A sand-sized fragment of pre-existing rock found in sedimentary deposits. The thin section revealed numerous volcanic lithics within the sandstone.
Synonyms
projectile point
stone tool
stone implement
lithic artifact
chipped stone