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Japan | |
| Färber, Gunnar (n.d.) Personal Communication, Gunnar Färber Mineralien. |
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Kazakhstan | |
| Brusnitsyn, A.I., Perova, E.N., Vereshchagin, O.S., Britvin, S.N., Platonova, N.V., Shilovskikh, V.V. (2021): Mineralogy of iron and manganese ores of the Ushkatyn-III deposit, Central Kazakhstan. Zapiski RMO (Proceedings of the Russian Mineralogical Society), 150, 1-29. |