AM_Ingersonite_2
Formula: Sb3.96 Mg.12 Ca2.8 Mn1.12 O14
Name: Ingersonite
Unit cell: 7.243 7.243 17.57 90.0 90.0 120.0 , V=798.25
Space group: P3121 (152)

Zanazzi P F , Chelazzi L , Bonazzi P , Bindi L , American Mineralogist , 94 (2009) p.352-358, High-pressure structural behavior of ingersonite, Ca3Mn2+Sb45+O14:, An in-situ single-crystal X-ray study, Locality: Langban mine, Varmland, Sweden, Note: P = 2.25 GPa