Вестник Кольского научного центра РАН. 2012, №1.

oil deposits in Russian Arctic with the focus on the fields in the Barents and Kara Seas. This suggests that the large-scale development of oil resources of Russian Arctic should be considered in the long run. We consider two alternative scientific approaches to the oil genesis problem: 1) the origin of oil is biogenic. In this case the mankind will spend the oil resources of the planet in a few decades, and the tremendous world energy crisis will break out; 2) the origin of oil is abiogenic. Oil is continuously generated in the bowels of the Earth. There is also an "intermediate" approach stating that the organic oil formed in ancient times is being added to the inorganic oil. If the second approach is valid, the oil reserves are almost inexhaustible. Pro et contra arguments are discussed. On example of the giant oil fields on the South Vietnam continental shelf, in particular, the White Tiger field with 0.66 billion tons of reserves, in the dislocated granite, arguments for the abiogenic origin of oil are shown to be all sound. The generation of hydrocarbon fluids and formation of the gas-oil deposits in the Early Proterozoic Pechenga-Varzuga zone and the adjacent northern seas are considered. Keywords: oil, oil deposits, oil exploration, oil and gas deposits, oil genesis, hydrocarbon raw materials, hydrocarbon fluid flows, Russian Arctic, Pechenga-Varzuga Belt, Barents and Kara Seas. V.V. Subbotin, A.U. Korchagin, E.E. Savchenko PLATINUM-BEARING MINERALIZATION OF THE FEDOROV-PANA ORE NODE: ORE TYPES, MINERAL COMPOSITION, GENESIS FEATURES The Fedorov-Pana layered mafic-ultramafic intrusion is an essential ore node of the Kola PGE-bearing province. The PGE mineralization of the intrusion is throughout spatially and genetically related to the sulfide ore. The deposits and ore prospects are located at various stratigraphic levels of the cross-sections and are constrained by various structural elements, e.g. marginal (basal) zone of the Fedorov Tundra intrusion, Northern and Southern Reefs in the layered horizons of the West-Pana intrusion, and Layered horizon of the East-Pana intrusion. There are 44 mineral species and a series of new mineral phases in PGE and Au natural minerals found in the ore of all types. Tornroosite was found for the first time in Russia. The most common are vysotskite, braggite, cooperite, sperrylite, stillwaterite, palladoarsenide, moncheite, merenskyite, kotulskite, sobolevskite, keithconnite, and native gold. All the variety of the platinum group minerals is subdivided into two stable mineral assemblages, an early (initial) sulphide-telluride, and a late (redeposited) arsenide-telluride one. The late redeposited assemblage is typical for the non-commercial Southern Reef. Keywords: Fedorov-Pana layered intrusion, platinum-group and gold minerals, sulphides, arsenides, tellurides, tornroosite. A.V. Voloshin, A.V. Cherniavsky, Yu.L. Voytekhovsky TELLURIDE MINERALIZATION IN GOLD LOCALITIES OF PANARECHKA VOLCANIC-TECTONIC STRUCTURE, KOLA PENINSULA Mineral forms of tellurides are considered in the paper. They are typical of epithermal deposits and indicate the physical-chemical conditions of the rock-forming process. Twenty seven mineral species and phases of tellurides and sulfotellurides are found in the Panarechka volcanic-tectonic structure. They are minerals with the main role of Ag and Au (empressite, hessite, stutzite, volynskite, petzite), Bi and Pb (tetradymite group: tetradymite, tellurobismuthite, tsumoite, ingodite, pilsenite, joseite-A, baksanite, hedleyite; aleksite group: aleksite, rucklidgeite, kochkarite, phase-C), other tellurides and sulphotellurides (coloradoite, altaite, benleonardite, nagyagite, radhakrishnaite). The mineral associations of tellurides and sulphotellurides are given and their genesis is discussed. Keywords: mineralogy, tellurides, gold, silver, tetradymite group, aleksite group, Kola Peninsula. A.A. Kalinin, N.N. Galkin PRECAMBRIAN PELLAPAKHK COPPER-MOLYBDENUM-PORPHYRY DEPOSIT (KOLMOZERO- VORONYA GREENSTONE BELT) The Cu-Mo mineralization of the Pellapakhk porphyry deposit form a stockwork of mineralized quartz and quartz-epidote-calcite veinlets in a zone of alteration of quartz porphyry intrusion. The age of the porphyry intrusion is 2.83 Ga, and the alteration of porphyry took place 2.77 - 2.73 Ga ago at the retrograde stage of the Lopian regional metamorphism. The stockwork is 1500 x 350-600 m, and consists of two lenses. The northern one is mainly in the microcline-quartz zone of alteration. The southern lens is in the muscovite- kyanite quartzite. Two mineral associations of different age were defined in the deposit. The early association is the pirrhotite-ilmenite one, which is typical of all host rocks of the deposit. The late association includes pyrite, chalcopyrite, sphalerite with molybdenite - that is productive mineralization, typical of the altered rocks within the stockwork. Ilmenite-pirrhotite mineralization formed at the stage of alteration of host rocks, and the productive mineralization is supposed to form much later - during the Svecofennian metamorphic, later than 1.9 Ga ago. Keywords: copper-molybdenum-porphyry deposits, Kolmozer-Voronya greenstone belt, metasomatites. 202