AM_Clinokurchatovite_2 Formula: Ca (Mg.89 Fe.11) B2 O5 Name: Clinokurchatovite Unit cell: 12.45 5.514 11.145 90.0 90.0 104.13 , V=741.95 Space group: P1121/B (14)

Simonov M A , Egorov-Tismenko Y K , Yamnova M A , Belokoneva E L , Belov N V , Soviet Physics Doklady , 25 (1980) p.1125-1128, Crystal structure of natural monoclinic kurchatovite, Ca2(Mg0.86Fe0.14)(Mg0.92Fe0.08)[B2O5]2