AM_Mathiasite Formula: (K.62 Na.14 Ba.14 Sr.1) (Zr.7 Ca.3) Mg1.333 Fe2.2 Ti12.9 Cr3.1 V.233 Nb.233 O38 Name: Mathiasite Unit cell: 9.119 9.119 9.119 69.24 69.24 69.24 , V=639.92 Space group: R-3 (148)

Gatehouse B M , Grey I E , Smyth J R , Acta Crystallographica, Section C , 39 (1983) p.421-422, Structure refinement of mathiasite, (K0.62Na0.14Ba0.14Sr0.10), [Ti12.90Cr3.10Mg1.53Fe2.15Zr0.67Ca0.29V0.36]O38, locality: peridotite nodules, Bultfonten kimblerlite, South africa