H13.64Mg4O22.82Si6
Giustetto, R.Levy, D.Wahyudi, O.Ricchiardi, G.Vitillo, J. G.
European Journal of Mineralogy (2011) 23, 449-466
a=13.395Å b=27.016Å c=5.2765Å
α=90° β=90° γ=90°
C1.083H5.48Mg2N0.136O11.376Si3
a=13.271Å b=27.072Å c=5.2748Å