Chemical and mineral composition of coal-series kaolin and the possibility of kaolinite purification. Himi, him. tehnol. hùrèèlèngijn èrdèm šinžilgèènij bùtèèl [Internet]. 2025 Dec. 13 [cited 2026 Jul. 15];13(13):7-16. Available from: https://mongoliajol.info/index.php/BICCT/article/view/5217