00550naa#a2200181#i#450# EN\\bibl\123069 20260514054823.4 3034-4689 20260508b2026####ek#y0engy0150####ca RU OBTAINING WOLLASTONITE BASED ON ZEOLITE-SILICA ROCK ACTIVATED WITH HYDROCHLORIC ACID Journal article Kazan Kazan National Research Technological University 2026 4 с. Journal article local Mishagin K. A. Yamaleeva E. S. vestniktu.ru