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Vol. 3 (2000 year), No. 2
Balabonin N.L., Korchagin A.U., Subbotin V.V., Neradovsky Yu.N., Karpov S.M., Pakhomovsky Ya.A., Savchenko Ye.E.
The minerals of platinum metals and new data on major minerals of the Fedorovo-Pansky massif ores
The paper has presented the results of the mineralogical study of the composite low grade sulphide platinum group elements (PGE) of Cu-Ni ores of the layered Fedorovo-Pansky massif. Monosulphides Fe, Ni have a wide range of composition (metal/sulphur, Ni contents) up to the formation of the monosulphide solid solutions (Ni up to 14.1 wt.%). 95 platinum-group minerals (PGM) and unnamed phases (PGP), mainly bismutho-tellurides and tellurides of Pd, Pt, have been found in ores. The most common and widely-distributed species of the PGM are merenskyite (Pd,Pt)(Te,Bi)2; moncheite (Pt,Pd)(Te,Bi)2; kotulskite Pd(Te,Bi); braggite (Pt,Pd,Ni)S and sperrylite PtAs2. The data have been presented on the abundance grain sizes, morphology, microassosiations and composition of the PGM. All common minerals except sperrylite have a wide range of composition. The following conclusions may be drawn: a long history of PGM cristallization in different conditions; Pansky and Fedorova massives are supposed to have different magmatic sources; postore regime of massif cooling took place under chilling condition with fluid loss. The indicator role of the PGM in genetic and typification problems has been emphasized.
(in Russian, стр.26, fig. 9, tables. 11, ref 90, MS Word 95, MS Word 95 3270 Kb)
Vol. 5 (2002 year), No. 1
Neradovsky Yu.N., Rundkvist T.V., Galkin A.S. and Kliment'ev V.N.
To the problem of the Sopcha "horizon-330" PGE bearing and its industrial usage (the Monchegorsk pluton)
The new data on the forms of platinum metals' evolution in the "horizon-330" ores have been obtained. The total PGE content is 1-2 ppm. The following PGE mineral phases have been established: merenskite, intermetallic compounds of the (Pd, Pb) and (Pd, Rh, Cu) types and a number of phases incorporated as fine grains in the main sulphide minerals: pyrrhotine, pentlandite and chalkopyrite. The PGE admixtures have been founded in pyrrhotite, chalcosine, pentlandite and heazlewoodite. There are no Pt admixtures in the minerals. It has been noticed that sulphide mineralization in the "horizon-330" ore body is not constant in composition and is linked by the adjacent ore composition. Eastwards ores have become more basic, the olivine content has being decreased, and that leads to the drop of silicate nickel in the "horizon-330" ores and improving of the ore quality.
(in Russian, стр.6, fig. 7, tables. 3, ref 15, MS Word 95, MS Word 95 406 Kb)
Vol. 12 (2009 year), No. 4
Rakayev A.I., Neradovsky Yu.N., Chernousenko Ye.V., Morozova T.A.
Mineralogical and technological investigations of low-grade serpentinite copper-nickel ores, the Pechenga ore body
Using methods of nuclear reactors physics the phenomenon of potential criticality has been studied within the framework of the concept of geologic repository of the non-processible spent nuclear fuel of the ship nuclear power installations. For the fractured rock mathematical model the minimum thickness of fissile material (UO2) on cracks' surface conforming to critical masses of heterogenous deposits have been determined. The scenario of autocatalytic criticality originated by change of a climate and developed at the expense of heating of medium, and water-transport from pores and cracks of rock has been described. The conclusion about preferability of the concept of termporary storage of non-processible spent nuclear fuel has been made.
(in Russian, стр.6, fig. 4, tables. 2, ref 7, Adobe PDF, Adobe PDF 0 Kb)
Vol. 15 (2012 year), No. 2
Voytekhovsky Yu.L., Neradovsky Yu.N.
Kyanite of the Bol'shiye Keivy as a complex raw material
The paper discusses the potential of giant kyanite ores deposits of the Bol'shiye Keivy on the Kola Peninsula as a complex of raw materials containing great amounts of nickel sulphide and cobalt with associate gold, titanium minerals (ilmenite and ruthile), graphite, rare metals and earths. It has been shown that resources of the deposits may be doubled with staurolite. The latter is a material of fluxes for metallurgic industry alternative to fluorite. As an example, general characteristics of the New Shuururta kyanite ores deposit have been provided. The latest results in the technology of enrichment and technological processing of kyanite ores have been highlighted.
(in English, стр.10, fig. 10, tables. 3, ref 15, Adobe PDF, Adobe PDF 0 Kb)