Citation: Khomyakov, A. P.; C\'amara F; Sokolova, E.; Abdu, Y.; Hawthorne, F. C. (2011). Sveinbergeite, Ca(Fe2+6Fe3+)Ti2(Si4O12)2O2(OH)5(H2O)4, a new astrophyllite-group mineral from the Larvik Plutonic Complex, Oslo Region, Norway: description and crystal structure. Mineralogical Magazine, 75, pp. 2687-2702.