[2][3] The formula is simplified as it does not show the presence of cyclic silicate groups.
[3] Other eudialyte-group representatives with such symmetry lowering include aqualite, oneillite, raslakite, voronkovite.
Nyorkpakhk, Khibiny massif, Kola Peninsula, Russia, where it represents a late-stage mineral.
It coexists with aegirine, alkaline amphibole, lamprophyllite, lomonosovite, potassium feldspar, pectolite, sodalite, and villiaumite.
[3] Beside that given in the formula, other elements substituting the main ones in labyrinthite are manganese, fluorine, and cerium.