Generalized data about morphology, distribution, chemical and mineralogical compositions of ferromanganese deposits of the Indian Ocean such as: concretions, microconcretions, crusts, and crust’s similar sediments were presented. Manganese ore accumulation process in all its forms, as a characteristic feature of oceanic sedimentogenesis, by reexamination of existing data about mineralogical composition of oceanic ferromanganese deposits was newly evaluated. Mineralogical types of ferromanganese deposits were determined on the basis of mineralogical analysis, determination of mineralogical associations and crystal- chemical features of minerals, which constitute these deposits.

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1. Banakar V.K., Nair R. R., Parthiban G., Pattan J. N., 2000. Oceanic ferromanganese deposits: future resources and past-ocean recorders, The Indian Mineralogist, Vol. 34 (2), pp. 41-56.
2. Bogdanova O.Yu., Gorshkov A.I., Novikov G.V., Bogdanov Yu.A., 2008. The mineral composition of morphogenetic types of ocean ferromanganese ore formations, Geology of Ore Deposits, Vol. 50, No. 6, pp. 526 -534. (In Russian).
3. Chiranjeeb Sarkar, Sridhar D. Iyer and Sugata Hazra, 2008. Inter-relationship between nuclei and gross characteristics of manganese nodules, Central Indian Ocean Basin, Mar. Georesour. Geotechnol., 26 (4), pp. 259-289.
4. Novikov G.V., Chelishchev N.F., Smetannikova O.G., Suchkov I.A., Frank-Kamenetskiy V.A., 1990. The occurrence of nonferrous metals in the manganese minerals of oceanic nodules and crusts, Notes of the All-Union Mineralogical Society, Part СХХІІ, No.3, pp.49-62. (In Russian).
5. Shkolnik E.L., Zhegallo Ye.A., Baturin G.N., et al., 2012. The study of manganese and ferromanganese mineralization in different natural environments methods of scanning electron microscopy, Moscow, Eslan, 472 p. (In Russian).
6. Shnyukov Ye.F., Orlovskiy G.N., Kleshchenko S.A., Reznik V.P., Ziborov A.P., Shchiptsov A.A., 2001, The ferromanganese nodules of the Indian Ocean, Kiev, 329 p. (In Russian).
7. Skornyakova N.S., Uspenskaya T.Yu., Gorshkov A.I., Sivtsov A.V., 1990. Ferromanganese nodules of Central Indian Ocean basin, Izvestiya the Academy of Sciences of the USSR, Serie geological, No. 6, pp. 117-123. (In Russian).
8. Skornyakova N.S., Svalnov V.N., Murdmaa I.O. et al., 1989. Ferromagnesian concretions of Central Indian Ocean basin), Nauka, Moscow, 223 p. (In Russian).
9. Smetannikova O.G., Andreev S.I., Anikeeva L.I., Frank-Kamenetskiy V.A., Suchkov I.A., 1991. The mineral composition and structure of oceanic ferromanganese formations in relation to their genesis, Notes Russian Mineralogical Society, Part СХХ, No. 3, pp. 31-42. (In Russian).
10. Smetannikova, O.G., Frank-Kamenetskiy, V.A., 1989, Possibility of X-ray diffraction methods in the diagnosis of manganese hydroxides, Methods diffraction studies of crystalline materials, Nauka, Siberian Branch, Novosibirsk, pp. 100-107. (In Russian).
11. Suchkov I.A., 2012, Variability of the mineral composition of ferromanganese formations of the Indian Ocean as a manifestation of the peculiarities of their genesis, Collection of scientific works the Institute of Geological Sciences of Ukraine, issue 5, pp. 96-104. (In Russian).
12. Suchkov, I.A. Reznik, V.P., Glavatskiy, V.I., 2000. The mineral composition of ferromanganese formations of the Indian Ocean, Mineralogy in Odessa the Millennium: Proceedings of the Department of Physical and Marine Geology, ONU, Odessa, issue 1, pp. 69-75. (In Russian).
13. Suchkov, I.A., Reznik, V.P., Smetannikova, O.G., Frank-Kamenetsiy, V.A., 1991. The mineral composition of hydrothermal manganese of the crusted formations East Indian Ridge, Mineralogical Journal, vol.13, No.1, pp. 60-67. (In Russian).
14. Suchkov, I.A., Smetannikova, O.G., Reznik, V.P., 1988. The mineral composition ferromagnesian concretions of Central Indian Ocean basin, Mineralogical Journa), vol. 10, No.4, pp. 73-78. (In Russian).