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Sweden | |
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| Roy, S. (1972) Metamorphism of sedimentary manganese deposits. Acta Mineralogica-Petrographica, 20 (2) 325-336 |
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| Natural History Museum, Stockholm collection # 19331358 |
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| Koark, H. (1970): Zur Geologie des Neuentdeckten Jakobsit-Braunit-Hämatit-Mangansilikatlagers Slöjdartorp im Nybergetfelde in Zentralschweden. Geologiska Föreningen i Stockholm Förhandlingar (GFF). 92, 388-401 |
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| Sjögren, H. (1894) Contributions to Swedish mineralogy. Bulletin of the Geological Institution of the University of Upsala, 2 (3) 39-74 |
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| Ounchanum, P. & Morad, S. (1987): Paragenesis of akatoreite and ganophyllite in the manganiferous rocks of the Häste Field, Norberg ore district, central Sweden. Neues Jahrbuch für Mineralogie, Abhandlungen 157, 225-244. |
Mangruvan, Nyberget ore field, Nyberget, Lindesberg, Örebro County, Sweden