🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPortuguêsTürkçeРусскийفارسی中文日本語EntityQ2747476· pop 12· linked from 134 articlesconchoidal fractureway that brittle materials break or fracture when they do not follow any natural planes of separationConnectionsglassEntityStone AgeEntityCategoriesLithicsMaterials degradationMineralogy conceptsPetrologyStone Age