%0 Journal Article %T Cations ordering in minerals with complex composition: P3-sergevanite — the second representative of eudialyte group with primitive cell %A . Rastsvetaeva, R.K. %K sergevanite, eudialyte group, crystal structure, isomorphism, key sites, primitive cell %J Vestnik of geosciences %D 2023 %N 0 %P 4 %I FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"