AM_Gillespite_9 Formula: Ba Cr Si4 O10 Name: Gillespite Unit cell: 7.5314 7.5314 16.0518 90.0 90.0 90.0 , V=910.49 Space group: P4/NCC (130)

Miletich R , Allan D R , Angel R J , American Mineralogist , 82 (1997) p.697-707, The synthetic Cr2+ silicates BaCrSi4O10 and SrCrSi4O10: The missing links in, the gillespite-type ABSi4O10 series, BaCrSi4O10