The features of the geological structure of the Torchyn apatite-ilmenite deposit has been considerate. Ore-bearing rocks are connected with habroide’s residual soil (Korosten complex, MZ-CZ) represent a monoclonal bedding layered body. Within the limits of massif the gabbroidic ricks of marginal facia have alarge reserves of poor apatite-ilmenite ores with average content of Р₂О₅ up to 2.5% and ТіО₂ – 3-4%. At the same time in the kaolin horizon of eastern part of deposit the ilmenite content is 30-40 kg/t, sometimes it increases up to 60 kg/t, but in western part this horizon is enriching by ilmenite more than to 80 kg/t, reaching 200 kg/t. The zonality in the mantle of weathering does not inherit such one in parental rocks. With the purpose of regularities of distribution of phosphorus- titanium we created at first time the geological-genetical models of ilmenite accumulation by residual path. The analysis of model showed that with removal other minerals at mechanical carry-over, removal of clay particles by underground water the enrichment of rock by ore minerals take place. These processes took place on the slopes in gravel part of weathering crust, which resulted formation of richer deposits in the western part of the Torchyn deposit. Keywords: residual deposit; ilmenite; apatite; weathering crust; Korostenskiy pluton; modelling; surface hypsometry.

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1. Bogatyryov B.A., Zhukov V.V., Tsehovsky Yu.G., 2009. Bauxite-ore epochs of Phanerozoic, Geology of Ore Deposits (Geologia rydnykh mestorozhdeniy), vol. 51, No. 6, pp. 508-519. (In Russian).
2. Bugelsky Yu.Yu., Pavlov I.V. (Ed.), 1970. Hydrogeochemistry of nickel weathering crust and the migration of nickel in modern exogenous conditions. In: Exogenous nickel weathering crust of the Urals. Moscow, Nauka, pp. 229-263. (In Russian).
3. Bugelsky Yu.Yu., Slukin A.D., Novikov V.M., 2000. The development of the doctrine of the ore-bearing weathering crusts: I.I. Ginzburg and his school. In: Natural and technogenic placers and deposits of weathering crusts at the turn of the centuries. XII Intern. Conf. on geology of placers and deposits of weathering crusts. Moscow, September 25-29, Abstracts. Moscow, 2000, pp. 59-61. (In Russian).
4. Burmin Yu.A., 1984. Geology of metal-bearing weathering crusts Moscow, Nedra, 237 p. (In Russian).
5. Veklich M.F., 1966. Paleogeomorphology of the Ukrainian shield. Kyiv, Naukova Dumka, 119 p. (In Ukrainian).
6. Galetskiy L.S., Remezova O.O., 2007. Titanium ores of Ukraine. Ukrainian geologist (Heoloh Ukrainy), No. 3, pp. 51-61. (In Ukrainian).
7. Ginzburg I.I., 1963. Energy questions of weathering reactions of some aluminosilicates In: The weathering crust. Moscow, Izdatelstvo AN SSSR, iss. 5, pp. 87-119. (In Russian).
8. Dodatko A.D., 2004. The ancient weathering crust and methods of their study. Dnepropetrovsk, Dnipropetrovs’k National University of Technology, 106 p. (In Russian).
9. Kaleda G.A., 1985. Variability of sediments on the tectonic structures. Moscow, Nauka, 192 p. (In Russian).
10. Kuzmenko G.O., 2014. Primary kaolins of the northwestern Ukrainian shield. Abstract cand. Geol. Sci., spec.: 04.00.01 General and regional geology. Kyiv, Institute of Geological Sciences of NAS of Ukraine, 23 p. (In Ukrainian).
11. Orlova N.I., Bykhovsky L.Z,. Voropaeva N.P., Labutin A.N., Sporykhin L.V., 2000. An importance of weathering crusts deposits in the development of mineral resources base of Russia. In: Natural and technogenic placers and deposits of weathering crusts at the turn of the centuries. XII International Conf. On geology of placers and deposits of weathering crusts. Moscow, September 25-29, Abstracts. Moscow, pp. 272-274. (In Russian).
12. Proskurin G.P., 1972. Report on the results of preliminary exploration Torchinsky titanium deposits in Zhitomir region. SSR held Zhytomyr geological expedition in 1970-1972, Kiev, Fondi DNVP «Geoіnform», Іnv. Number 34066, Pr. 1, 144 p. (In Russian).
13. Rus’ko Yu.A., 1976. Kaolinization and kaolins of the Ukrainian shield. Kyiv, Naukova Dumka, 157 p. (In Russian).
14. Savko A. D., Bugelsky Yu.Yu., Novikov V.M., Slukin A.D., Shevyrev L.T., 2007. Weathering crust and associated minerals. Voronezh, Voronezh’k National University, 355 p. (In Russian).
15. Sapozhnikov D.G., Nikitin A.P., Slukin A.D., 1969. About of the connection with bauxite with the weathering crust. In: Problems of mineral deposits geology, petrology and mineralogy. Moscow, vol. 1. Pp. 213-225. (In Russian).
16. Strakhov N.M. Responsible ed. V.N.Kholodov., 2008. The problems of the modern and ancient sedimental process. In 2 vol, Moscow, Nauka, Vol.1. p. 495. (In Russian).
17. Reference book of the hydrogeologist, Altovskyy M.E., Moscow, Gosgeoltekhizdat, 1962, 616 p. (In Russian).
18. Shvayberov S.K., 1985. The report on the results of detailed exploration conducted on Torchinskiy apatite-ilmenite deposit in the 1970-1984 in the Zhitomir region of the Ukrainian SSR, Kiev, Fondi DNVP «Geoіnform», Іnv. Number 47391, Pr. 1, 280 p. (In Russian).
19. Саstiglioni G.B., 1991. Geomorfologia, UTET, Torino, 436 p. (In Italian).
20. Force E.R., 1991. Geology of Titanium-Mineral Deposits. Geological Society of America. Special Paper 259, 112 p.
21. Herz N., Valentine L. E., Iberall E. R., 1970. Rutile and Ilmenite placer deposits Roseland district, Nelson and Amherst counties, Virginia : analyses of panned concentrates of heavy minerals from the Roseland district indicate the possibility of valuable placer deposits of titanium minerals. Washington, D.C.: United States Department of the Interior, Geological Survey. 23 p.